WO2004025372A1 - トナー用樹脂組成物及びトナー - Google Patents
トナー用樹脂組成物及びトナー Download PDFInfo
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- WO2004025372A1 WO2004025372A1 PCT/JP2003/009628 JP0309628W WO2004025372A1 WO 2004025372 A1 WO2004025372 A1 WO 2004025372A1 JP 0309628 W JP0309628 W JP 0309628W WO 2004025372 A1 WO2004025372 A1 WO 2004025372A1
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- toner
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- crystalline polyester
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G9/00—Developers
- G03G9/08—Developers with toner particles
- G03G9/087—Binders for toner particles
- G03G9/08775—Natural macromolecular compounds or derivatives thereof
- G03G9/08782—Waxes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G9/00—Developers
- G03G9/08—Developers with toner particles
- G03G9/0821—Developers with toner particles characterised by physical parameters
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G9/00—Developers
- G03G9/08—Developers with toner particles
- G03G9/087—Binders for toner particles
- G03G9/08742—Binders for toner particles comprising macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- G03G9/08755—Polyesters
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G9/00—Developers
- G03G9/08—Developers with toner particles
- G03G9/087—Binders for toner particles
- G03G9/08784—Macromolecular material not specially provided for in a single one of groups G03G9/08702 - G03G9/08775
- G03G9/08795—Macromolecular material not specially provided for in a single one of groups G03G9/08702 - G03G9/08775 characterised by their chemical properties, e.g. acidity, molecular weight, sensitivity to reactants
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G9/00—Developers
- G03G9/08—Developers with toner particles
- G03G9/087—Binders for toner particles
- G03G9/08784—Macromolecular material not specially provided for in a single one of groups G03G9/08702 - G03G9/08775
- G03G9/08797—Macromolecular material not specially provided for in a single one of groups G03G9/08702 - G03G9/08775 characterised by their physical properties, e.g. viscosity, solubility, melting temperature, softening temperature, glass transition temperature
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
- C08L77/02—Polyamides derived from omega-amino carboxylic acids or from lactams thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
- C08L77/06—Polyamides derived from polyamines and polycarboxylic acids
Definitions
- the present invention relates to a resin composition for a toner which is excellent in low-temperature fixing property, high-temperature offset resistance and blocking resistance, and can perform favorable color development, and a toner.
- a dry developing method As a method for developing an electrostatic image in electrophotography or the like, a dry developing method is often used.
- toner is usually charged by friction with iron powder, glass beads, etc., which are called carriers, and this is attached to the electrostatic latent image on the photoreceptor by electrical attraction, and then transferred to paper.
- the image is fixed by a heating roller or the like and becomes a permanent visible image.
- a heating roller method is generally used in which a toner image of a sheet to be fixed is passed through the surface of a heat fixing roller having a surface formed of a material having a releasable property with respect to toner while being brought into pressure contact with the surface. Have been.
- a toner which can be fixed at a lower temperature is required in order to improve economy such as power consumption and to increase copying speed.
- polyester-based toners usually, a polyfunctional monomer having three or more functional groups is copolymerized to form a chemically crosslinked structure in the polymer and maintain high-temperature offset resistance.
- a component that does not dissolve in the polymer so that the printing surface after fixing with the fixing roll has irregularities, resulting in poor gloss and low-temperature fixing ability. I did.
- Japanese Patent No. 2987870 discloses that terephthalic acid and a linear alkylene alcohol having 2 to 6 carbon atoms are used as a binder resin of a toner. It has been proposed to use a crystalline polyester resin containing at least 50 mol% of the derived units with respect to the total monomer units used. However, in this technology, since only a crystalline polyester resin is used, it is difficult to maintain a high-temperature offset resistance and a blocking resistance without impairing a low temperature fixing range and a low-temperature fixing property. Was.
- Patent No. 274,282 discloses that as a binder resin for a toner, 50 mol% or more of a trivalent or higher polyvalent monomer, an aromatic dicarboxylic acid, and a branched aliphatic alcohol are used. It has been proposed to use a non-crystalline polyester resin obtained by polymerizing an aliphatic alcohol containing the polyester resin. However, in this technology, since only the non-crystalline polyester resin is used, the low-temperature fixability was not sufficient.
- JP-A-4-973766 and JP-A-4-313760 describe two types of toners having different softening points as toners having an excellent balance between low-temperature fixing property and high-temperature and high-temperature offset resistance. Toners containing polyester as a toner resin have been proposed. While the compatibility of the above two types of polyesters is not sufficient, polyesters with a low softening point: When it is easy to cause locking or to adhere to the fixing roller and cause filming to occur easily There was a problem, and there was also a problem that the transparency of the resin was low due to insufficient compatibility.
- Japanese Patent Publication No. 5-44032 proposes using a block copolymer of a low-melting crystalline polyester and a high-melting crystalline polyester as a binder resin of the toner.
- this technique has a problem that a transparent resin cannot be obtained because the binder resin becomes cloudy resin.
- the JP 56 - 65 146 discloses a binder one glass transition temperature 40 ° C above the softening point 80 to 1 50 ° C and a number average molecular weight 1000-10000 noncrystalline Polje ester 50-95 weight 0 /
- An electrophotographic toner comprising 50 to 5% by weight of a crystalline polyester having 0 and a glass transition temperature of 0 ° C. or higher, a melting point of 110 ° C. to 220 ° C. and a number average molecular weight of 8,000 to 40,000 is disclosed. This is to improve the pulverization property, anti-blocking property and releasability of the heat roller by using two kinds of polyester as a binder.
- the use of a mixture alone cannot sufficiently achieve both low-temperature fixability, high-temperature offset resistance, and storage stability, and also cannot achieve sufficient durability and image reproducibility. Summary
- the present invention has been made in view of the above circumstances, and has as its object to provide a resinous resin composition for a toner, which is excellent in low-temperature fixing property, high-temperature offset resistance, and blocking resistance, and can perform good color development, and a toner. .
- the present invention relates to a crystalline polymer having a melting point of 180 to 280 ° C and an endotherm at a melting point of 25 to 15 Omj / mg measured by using a differential scanning calorimeter (DSC); And a non-crystalline polyester having a temperature of 30 to 80 ° C.
- DSC differential scanning calorimeter
- the resin composition for a toner of the present invention preferably has an endothermic amount at a melting point of 1 to 20 mjZmg measured using a differential scanning calorimeter (DSC), and has an average particle diameter of crystal particles observed by a polarizing microscope. It is preferably 5 xm or less, and the haze value measured by a method according to JISK 7105 is preferably 60% or more.
- the resin composition for a toner according to the present invention was measured using a differential scanning calorimeter (DSC).
- the difference between the recrystallization start temperature Tic and the recrystallization peak temperature Tpc is preferably 30 ° C or less, and more preferably the recrystallization start temperature Tic is 80 ° C or more. .
- the resin composition for a toner of the present invention has a rate of change D in the relaxation modulus represented by the following formula (1) of 15 to 90 when 5% shear strain is applied at 190 ° C. It is preferable that
- the shearing strain represented by the following formula (2) is given after 0.02 seconds. It is preferable that the slope K of the relaxation modulus curve after 0.1 second is -27 or more.
- the crystalline polymer preferably has a weight average molecular weight of 30,000 to 300,000.
- the crystalline polymer is preferably a crystalline polyester, more preferably polybutylene terephthalate or polyethylene terephthalate, and is preferably a crystalline polyamide, comprising a crystalline polyamide and a crystalline polyester. Is preferred.
- the non-crystalline polyester is preferably a polymer obtained by polymerizing terephthalic acid, neopentyldaricol, and a monomer mixture containing ethylene glycol and Z or 1,4-butanediol as main components.
- the non-crystalline polyester preferably contains a non-crystalline polyester having a weight average molecular weight of 3000 to 20,000 and a non-crystalline polyester having a weight average molecular weight of 30,000 to 300,000.
- the above non-crystalline polyester has a molecular weight of 1,000 to 300,000 but a content of 90% by weight. /.
- the amorphous polymer having a molecular weight of 1,000 to 300,000 Of ester the content of the content of molecular weight 1 0 0 0-20000 is a thing 4 0-9 0 weight 0/0, the molecular weight 20000-3 00000 is a thing 1 0-6 0% It is preferable that
- the crystalline polymer and the non-crystalline polyester are preferably compatible with each other.
- the glass transition temperature of the crystalline polymer is A (° C)
- the glass transition temperature of the non-crystalline polyester is B (° C )
- the glass transition temperature of the resin composition for toner is A (° C)
- s represents the weight fraction of the crystalline polymer in the resin composition for toner
- t represents the resin for toner. Represents the weight fraction of the amorphous polymer in the composition.
- the resin composition for a toner of the present invention preferably has an acid value of 1 to 30.
- a toner using the resin composition for a toner of the present invention is also one of the present invention.
- the toner of the present invention preferably contains a low melting point compound having a melting point of 70 to 120 ° C.
- the low melting point compound is preferably a crystalline polyester, and is preferably a wax.
- the resin composition for a toner of the present invention contains a crystalline polymer and a non-crystalline polyester.
- a crystalline polymer means a polymer having a sharp and distinct melting point peak and a crystallinity of more than 10% when differential heat is measured by a differential scanning calorimeter.
- the non-crystalline polyester means a polyester which does not show a sharp and distinct melting point peak when the differential heat is measured by a differential scanning calorimeter and has a crystallinity of 10% or less.
- a toner which is excellent in low-temperature fixability, high-temperature offset resistance, and blocking resistance, and can perform good color development can be produced.
- the crystalline components in the high-melting crystalline polymer form a physical cross-linked structure in the non-crystalline polyester.
- the non-crystalline component and the non-crystalline polyester By forming such a network structure, there is little decrease in viscosity at high temperatures and good resistance to heat without lowering low-temperature fixability and storage stability. It is considered that offset properties can be developed. Only by forming such a network structure, excellent effects, which cannot be obtained by simply mixing a plurality of resins, are exhibited.
- a crystalline polymer having a high melting point capable of forming a physical crosslinked structure and a non-polymer having a glass transition temperature of 30 to 80 ° C which does not form a physical crosslinked structure By mixing with a crystalline polyester, it is possible to improve the glossiness and the low-temperature fixability at the same time as improving the high-temperature offset resistance.
- a toner using the resin composition for a toner of the present invention has excellent image reproducibility. This is because the above-mentioned network structure is formed in the entire resin composition for a toner of the present invention, so that the toner obtained in the pulverization process has a stable chargeability, has no capri, and has excellent image reproducibility. Conceivable.
- a preferable lower limit of the endothermic amount at a melting point measured by using a differential scanning calorimeter (DSC) is 1 mJ / g, and a preferable upper limit is 2 OmJ, mg. If it is less than lmj / mg, the above-mentioned network structure will not be formed and the desired effects such as high-temperature offset resistance may not be obtained. May not be sufficiently reduced, and unevenness may occur on the printed surface after fixing, resulting in poor gloss or low-temperature fixability.
- a more preferred lower limit is 2 mJZmg, and a more preferred upper limit is 15 mJZmg.
- the crystals having the physical crosslinked structure are uniformly finely dispersed in the toner resin composition of the present invention in a size of 5 ⁇ or less. More preferably, the size is 1 / im or less. Since the fine crystals are finely dispersed, the network structure becomes more stable, and excellent effects are exhibited. Specifically, the average particle diameter of the crystal particles observed when observing the resin fine particles for toner of the present invention with a polarizing microscope is preferably 5 ⁇ m or less.
- the term “crystal particles” means a particle-like structure formed by forming a physically cross-linked structure between crystal components in the crystalline polymer.
- the method for measuring the average particle diameter of the crystal particles is not particularly limited, and for example, can be determined by the following method. That is, the resin composition for a toner of the present invention is placed on a preparation, heated to about 10 ° C. using a hot plate or the like to soften, and then covered with a cover glass and pressed lightly. Thereafter, the resin is heated to 150 ° C to recrystallize the resin in an amorphous state, and then returned to room temperature. This is observed using a polarizing microscope with a magnification of 200 times, the particle diameter of the crystal particles that can be distinguished is measured, and the average is determined.
- the resin composition for a toner of the present invention preferably has a haze value of 60% or more measured by a method based on JISK7105. If the peak value is 60 ° / 0 or more, the crystals having the physical crosslinked structure are uniformly finely dispersed in a size of 5 or less.
- the resin composition for use is excellent in low-temperature fixability, high-temperature offset resistance, and blocking resistance, and can perform good coloring. If the haze value is less than 60%, the crystals aggregate and are not uniformly dispersed, and the above-described network structure cannot be formed.
- the above haze value should be calculated by the following formula (4) by measuring the total light transmittance T i (%) and the diffuse transmittance T d (%) by a method based on JIS 7105. Can be.
- the resin composition for a toner of the present invention is measured using a differential scanning calorimeter (DSC). did It is preferable that the difference between the recrystallization start temperature Tic and the recrystallization peak temperature Tpc is 30 ° C. or less.
- DSC differential scanning calorimeter
- the present inventors have conducted intensive studies and as a result, have found that the state of dispersion of the crystals forming the physical crosslinked structure in the resin composition for toner of the present invention is in phase with the recrystallization temperature of the resin composition. I found it.
- recrystallization starts at a relatively low temperature in a portion where the concentration of the crystal component is high, and a relatively high temperature in a portion where the concentration of the crystal component is low. It is considered that recrystallization does not start until then, while if the crystal component in the resin fine particles is uniform, such a difference in recrystallization temperature is considered not to occur. Therefore, the difference between the recrystallization onset temperature Tic and the recrystallization peak temperature Tpc is considered to reflect the degree of dispersion of the crystal components in the resin fine particles. It is thought that it is doing.
- the crystal having the above-mentioned physical bridge structure is formed.
- the difference between the recrystallization onset temperature Tic and the recrystallization peak temperature T pc measured using a differential scanning calorimeter (DSC) is 30 ° C or less, the crystal having the above-mentioned physical bridge structure is formed.
- the difference between the recrystallization onset temperature Tic and the recrystallization peak temperature Tpc exceeds 30 ° C, the crystal component is not uniformly dispersed, so that a network structure cannot be formed and the above-described effect is obtained. I can't do it.
- the recrystallization onset temperature T ic is a temperature at a rising point of an exothermic peak indicating recrystallization observed when measured using a differential scanning calorimeter (DSC).
- the recrystallization peak temperature T pc means the temperature at the top of the endothermic peak indicating recrystallization.
- the measurement conditions of the differential scanning calorimeter (DSC) are not particularly limited. For example, the measurement is performed by heating 1 Omg of the sample at a heating rate of 10 ° CZ in accordance with JIS 7121. can do.
- the recrystallization start temperature Tic is preferably 80 ° C. or higher.
- the crystalline state may be changed during storage of the resin composition for a toner of the present invention.
- the recrystallization start temperature Tic is 80 ° C. or more, crystallization occurs in a kneaded state, so that the crystal components can be more uniformly dispersed.
- the resin composition for a toner of the present invention has a rate of change D of the relaxation modulus represented by the following formula (1) of 15 to 90 when 5% shear strain is given under the condition of 190 ° C. It is preferred that there be.
- G 5% (0.1) gives 0.1% of shear strain of 5%.
- G 5% max is the peak position of the relaxation modulus curve when the time from the application of shear strain is plotted on the horizontal axis and the relaxation modulus is plotted on the vertical axis. Represents the relaxation modulus of
- the rate of change D of the relaxation modulus is less than 15, the viscosity of the toner does not sufficiently decrease when pressed by the fixing roll, and unevenness occurs on the printed surface after fixing, resulting in poor gloss or low-temperature fixability. If it exceeds 90, sufficient high-temperature offset resistance may not be obtained because the above-mentioned network structure is difficult to form.
- the shearing strain represented by the following formula (2) is given after 0.02 seconds. It is preferable that the slope K of the relaxation modulus curve after 0.1 second is 127 or more.
- the slope K of the relaxation modulus curve indicates the elastic behavior of the material, and as it approaches 0, it indicates that the material has properties closer to rubber elasticity.
- the gradient of the relaxation modulus curve is 127 or more, the above-mentioned network structure is formed in the resin composition for a toner of the present invention, and the physically crosslinked structure uniformly dispersed is formed. This is thought to mean that rubber-like properties are exhibited due to the structure in which the non-crystalline component and the non-crystalline polyester in the crystalline polymer having a high melting point centered on the crystal.
- the resin composition for a toner of the present invention in which the gradient K of the relaxation modulus curve is ⁇ 27 or more has excellent low-temperature fixing property, high-temperature offset resistance, and blocking resistance, and provides a toner that performs good color formation. Can be given. If the slope K of the relaxation modulus curve is less than -27, the above-described network structure is not formed, and such an effect cannot be obtained. Les ,.
- the resin composition for a toner according to the present invention when subjected to a shear strain of 450% under the condition of 190 ° C., has a relaxation modulus G (0.1) after 0.1 second from the application of the shear strain. ) Is preferably 30 to 3000 Pa.
- G 0.1
- toner offset occurs when the cohesive force of the melted toner is smaller than the adhesive force between the toner and the heat fixing roller. It has been found that there is a relationship between the magnitude of the cohesive force of the composition and the relaxation modulus of the resin composition for toner under large deformation.
- the relaxation elastic modulus is determined, for example, by melting a resin for toner of the present invention and then molding the resin into a disk having a predetermined size as a test sample, and using a relaxation elastic modulus measuring device (for example, manufactured by Rheometrics Co., Ltd.). RMS-800, etc.).
- a relaxation elastic modulus measuring device for example, manufactured by Rheometrics Co., Ltd..
- RMS-800, etc. the lower limit of the elastic tangent ta ⁇ (1 20) at 120 ° C. measured at an angular frequency of 62.8 rad / sec and a strain amplitude of 1% is 0.5
- the preferable upper limit is 0.5.
- the preferred lower limit of the elastic tangent ta ⁇ ⁇ (160) at 160 ° C is 0.5, and the preferred upper limit is 5. If the elastic tangent ta ⁇ ⁇ (120) is less than 0.5, the resulting toner may have insufficient low-temperature fixability, and if it exceeds 2, the resulting toner may not have high-temperature offset resistance. May be sufficient. If the elastic tangent tan S (160) is less than 0.5, the obtained toner may have insufficient low-temperature fixability, and if it exceeds 5, the obtained toner may not have high-temperature offset resistance. May be sufficient.
- the elastic tangent ta ⁇ ⁇ is determined by using a resin sample for toner of the present invention, which is obtained by compression molding into a disk of a predetermined size as a test sample, using a viscoelasticity measuring device (for example, RMS manufactured by Rheometrics Co., Ltd.). — 800 etc.).
- the toner / resin composition of the present invention preferably has a penetration at 60 ° C. of less than 10 (unit: 0.1 mm). If the penetration exceeds 10, the resulting toner may have insufficient blocking resistance 1 ".
- the penetration can be measured by a method based on ASTM D 1321.
- the above crystalline polymer has an endotherm at a melting point of 25 to 15 OmjZmg measured using a differential scanning calorimeter (DSC). If it is less than 25 mJZmg, the above-mentioned network structure is difficult to form, and the desired effects such as high-temperature offset resistance cannot be obtained.If it exceeds 15 OmjZmg, the polymer will not be applied when pressed by the fixing roll. Does not decrease sufficiently, unevenness occurs on the printed surface after fixing, resulting in poor gloss and poor low-temperature adhesion. Preferably it is 40 to 10 Om J / mg.
- the measurement conditions of the differential scanning calorimeter are not particularly limited.
- the measurement can be performed by heating 1 Omg of the sample at a heating rate of 10 ° C / minute in accordance with JISK 7121. .
- the crystalline polymer has a melting point of 180-280 ° C. If the temperature is lower than 180 ° C, the hot offset resistance at high temperatures becomes insufficient, or filming occurs and the durability becomes insufficient. If the temperature exceeds 280 ° C, productivity must be remarkably deteriorated because it is necessary to melt at a high temperature exceeding 280 ° C when mixed with the non-crystalline polyester. It is preferably from 200 ° C to 240 ° C, and more preferably the lower limit is 221 ° C.
- the hot offset resistance temperature is required to be 180 ° C or more. Of the above crystalline polymer If the melting point is 180 ° C.
- the crystalline portion of the crystalline polymer does not melt even at a high temperature, and the above-described network structure is maintained, so that the hot offset resistance at high temperatures is improved.
- toners that do not generate fine powder even under high-speed operation and do not cause filming are desired.
- the preferred lower limit of the weight average molecular weight of the crystalline polymer is 30,000, and the preferred upper limit is 300,000. If it is less than 30,000, the resulting toner may have insufficient offset resistance and durability. If it exceeds 300,000, the low-temperature fixability and gloss may be poor. This is considered to be because the above-mentioned network structure cannot be formed sufficiently if the ratio is outside this range.
- a more preferred lower limit is 50,000, a more preferred upper limit is 200,000, a still more preferred lower limit is 80,000, and a still more preferred upper limit is 150,000.
- the crystalline polymer is not particularly limited, but a crystalline polyester or a crystalline polyamide is preferred. These crystalline polyesters and crystalline polyamides may be used alone or in combination. When used in combination, the high-temperature offset resistance can be further improved by the synergistic effect of the two types of crystalline polymers.
- the crystalline polymer may be a copolymer with a non-crystalline polymer as long as it satisfies the above-mentioned conditions such as the endothermic amount as a whole.
- the crystalline polyester can be obtained by polycondensing a dicarboxylic acid and a diol.
- dicarboxylic acids examples include o-phthalic acid, terephthalic acid, isophthalic acid, succinic acid, adipic acid, sebacic acid, azelaic acid, octylsuccinic acid, cyclohexanedicanolevonic acid, naphthalenedicanoleponic acid, and fumanole Acids, maleic acid, itaconic acid, decamethylenecarboxylic acid, anhydrides thereof, lower alkyl esters and the like can be mentioned. Of these, terephthalic acid, naphthalenedicarboxylic acid, and anhydrides and lower alkyl esters thereof are preferably used to impart crystallinity. You can.
- diols examples include ethylene glycol, 1,3-propanediol, 1,4-butanediol, diethyleneglycone, 1,5-pentandiol, 1,6-hexanediol, dipropyleneglycore, and triethylene.
- Glyconole tetraethylene glycolone, 1,2-propanediole, 1,3-butanediol, 2,3-butanediole, neopentylglyconele (2,2-dimethinolepropane-1,3-dioneole), Fats such as 1,2-hexanediole, 2,5-hexanediol, 2-methyl-1,4-pentanediol, 3-methylinole-1,3-pentanediol, 2-ethyl-1,3-hexanediol Aromatic diols: 2,2_bis (4-hydroxycyclohexyl) propane, 2,2-bis (4-hydroxy Alkylene oxide adducts of hexyl) propane cycloalkyl, 1, 4-hexanediol to Shikuro, 1, 4 Cyclohexanedicarboxylic alicyclic diols such as methanol, etc. to
- polybutylene terephthalate (PBT) and polyethylene terephthalate (PET) are particularly preferable.
- PBT polybutylene terephthalate
- PET polyethylene terephthalate
- Polybutylene terephthalate (PBT) has a high crystallization rate and a high degree of crystallinity, and the toner obtained using it has excellent offset resistance.
- the toner since the toner has excellent compatibility with the non-crystalline polyester, the toner obtained by using the same has excellent low-temperature fixability and gloss.
- Polyethylene terephthalate has a high crystal melting point, and the toner obtained by using it has particularly good offset resistance at high temperatures.
- Polyethylene terephthalate (PET) is inferior to polybutylene terephthalate (PBT) in terms of crystallization speed and crystallinity, but it is possible to improve these points by adding a nucleating agent. is there.
- These crystalline polyesters may be used alone or in combination of two or more.
- Examples of the crystalline polyamide include 6-nylon, 6,6-nylon, 4,6-nylon, 11-nylon, 12-nylon, and the like. Above all, 6—Nay Ron, 6, 6-Ni-N is preferable because of its high cohesive strength of the crystal and its excellent effect of improving the hot offset resistance. Polyamide-polyester copolymers obtained by copolymerizing polyesters with these crystalline polyamides are also preferred because of their excellent compatibility with non-crystalline polyesters. These crystalline polyamides may be used alone or in combination of two or more.
- the above-mentioned crystalline polyamide has a strong cohesive force between molecules, it can exhibit high-temperature offset resistance by using a small amount of the polyester, and can increase the strength of the resin itself.
- the glass transition temperature of the amorphous polyester is 30 to 80 ° C. If the temperature is less than 30 ° C, the high-temperature offset resistance and the anti-blocking property cannot be sufficiently obtained. If the temperature exceeds 8 ° C, the low-temperature fixing property is poor. Preferably it is 50 to 65 ° C.
- the non-crystalline polyester can be obtained by polycondensing a dicarboxylic acid and a diol.
- the glass transition temperature of non-crystalline polyester is that aromatic dicarboxylic acids such as terephthalic acid have the function of improving the glass transition temperature, and long-chain aliphatic dicarboxylic acids such as sebacic acid and adipic acid lower the glass transition temperature. Therefore, the desired glass transition temperature can be achieved by appropriately combining these dicarboxylic acids. However, even if the desired glass transition temperature can be achieved by appropriately combining an aromatic dicarboxylic acid and a long-chain aliphatic dicarboxylic acid, the softening temperature tends to be too high.
- the above-mentioned non-crystalline polyester is composed of a polyvalent carboxylic acid containing at least either a divalent bent monomer capable of introducing a bent molecular structure into a molecular chain or a divalent monomer having a branched chain and a polyvalent carboxylic acid. It is preferable to polymerize a monomer mixture containing an alcohol.
- a polymer obtained by polymerizing a mixture of these divalent bent monomers or a monomer containing a divalent monomer having a branched chain can easily achieve both the desired glass transition temperature and a low softening temperature, and can be used as a crystal. Can be effectively suppressed.
- the ortho-position or meta-position is substituted with Substituted aromatic dicarboxylic acid, aromatic diol substituted with hydroxyl group at onoleto or meta position, polycyclic aromatic dicarponic acid having carboxyl group at asymmetric position, polycyclic aromatic compound having hydroxyl group at asymmetric position
- dicarboxylic acid ⁇ diol is a monomer capable of introducing a bent molecular structure into the molecular chain of a polymer such as a diol.
- anhydrides and lower esters of dicarboxylic acids, monohydroxymonocarboxylic acids, and the like may be used.
- dicarboxylic acids such as phthalic anhydride, o-phthalic acid, isophthalic acid, 1,4-naphthalenedicarboxylic acid, and 2,7-naphthalenedicarboxylic acid, and their anhydrides and lower esters; salicylic acid, 3-hydroxy Monohydroxymonocarboxylic acids such as 2-naphthalenecarboxylic acid; catechol, 1,4-si Diols such Cyclohexanedicarboxylic meth no zone les to the mouth and the like.
- the divalent monomer having a branched chain effectively suppresses crystallization of the polymer due to steric hindrance of the branched chain.
- the monomer having a branched chain that can effectively suppress crystallization include an aliphatic diol having a branched alkyl chain, an alicyclic diol having a branched alkyl chain, and the like.
- the alicyclic diol is preferably an alicyclic diol in which a plurality of alicyclic diols are linked by a branched alkylene chain.
- the divalent monomer having a branched chain is not particularly restricted but includes, for example, 1,2-propanediole, 1,3-butanediole, 2,3-butanediole, neopentyldaricol (2,2-dimethylmetholone) Nolepropane-1,1,3-diol), 1,2-hexanediolone, 2,5-hexanediolone, 2-methinole-2,4-pentanediol, 3-methinole-1,3-pentanediol, 2-ethylyl 1,3-Hex Sangio mono, 2-Puchinoré 2-Echinole 1,3-propane diole, 2,4-Echinole 1,5-pentane diole, etc .; 2,2- And alicyclic diols such as bis (4-hydroxycyclohexyl) propane and alkylene oxide adducts of 2,2-bis (4-hydroxycyclohexyl)
- non-crystalline polyesters obtained by polymerizing terephthalanolic acid, neopentyl glycol, and a monomer mixture containing ethylene glycol and / or 1,4-butanediol as main components have improved low-temperature fixability and transparency. Good because it is excellent You.
- the non-crystalline polyester preferably contains two types of non-crystalline polyesters having different average molecular weights.
- the melt viscosity of an amorphous polyester is determined by its molecular weight. If a non-crystalline polyester having a small molecular weight is used, the obtained toner has a low melt viscosity, and thus excellent low-temperature fixability can be obtained. However, when a non-crystalline polyester having a small molecular weight is used, the obtained toner is inferior in high-temperature offset resistance and storage stability, and becomes difficult to knead with the crystalline polymer.
- the present inventors have conducted intensive studies and have found that by using a non-crystalline polyester having a small average molecular weight and a non-crystalline polyester having a large average molecular weight in combination, high-temperature offset resistance can be maintained while maintaining excellent low-temperature fixability. It has been found that the storage stability and kneadability with a crystalline polymer can be significantly improved.
- the combination of the two non-crystalline polyesters having different weight average molecular weights is not particularly limited.
- a non-crystalline polyester having a weight average molecular weight of 300 to 20,000 as a small average molecular weight is It is preferable to use a non-crystalline polyester having a weight average molecular weight of 30,000 to 300,000 as a large one. If the weight average molecular weight of the non-crystalline polyester having a small average molecular weight is less than 300, the strength of the resin composition for toner becomes low, and the durability of the obtained toner becomes insufficient. However, excellent low-temperature fixability may not be exhibited. A more preferred upper limit is 800.000.
- the resulting toner When the weight average molecular weight of the non-crystalline polyester having a small average molecular weight is less than 30,000, the resulting toner may have insufficient high-temperature offset resistance, storage stability, and kneading properties with the crystalline polymer. If it exceeds 0,000, the resulting toner may have insufficient low-temperature fixability.
- the mixing ratio of the non-crystalline polyester having a weight average molecular weight of 300 to 20,000 and the non-crystalline polyester having a weight average molecular weight of 30,000 to 300,000 is as follows. 40 to 90% by weight of non-crystalline polyester having a weight average molecular weight of 100 to 20,000 and 10 to 60% by weight of non-crystalline polyester having a weight average molecular weight of 30,000 to 300,000. Is preferred. If the amount of the non-crystalline polyester having a weight-average molecular weight of 300 to 20,000 is less than 40% by weight, the obtained toner has insufficient low-temperature fixability.
- the non-crystalline polyester has a molecular weight of 100,000 to 300,000 and a content of 90% by weight. /. Be more than among the non-crystalline polyether ester of molecular weight is 1 0 0 0-3 00 000, the content of the molecular weight of 1 0 0 0-20000 is 4 0-9 0 weight 0/0 It is preferable that the content of the compound having a molecular weight of 20,000 to 300,000 is 10 to 60% by weight / 0 .
- the crystalline polymer and the non-crystalline polyester are compatible with each other.
- the above-mentioned network structure can be formed stably by the above-mentioned crystalline polymer and the above-mentioned non-crystalline polyester being compatible with each other.
- the toner resin composition of the present invention is colorless and transparent, and can be used as a color toner resin composition capable of performing good color development. Since it can be suitably used and has high resin strength, it can be suitably used as a toner resin composition having excellent durability and high-temperature offset resistance.
- compatible refers to a state in which the crystalline polymer and the non-crystalline polyester are uniformly mixed, and these are completely compatible or partially compatible. May be.
- the glass transition temperature of the crystalline polymer is set to A (° C)
- the glass transition temperature of the amorphous polyester is set to B ( ° C)
- the glass transition temperature C (° C) of the resin thread composition for toner of the present invention preferably satisfies the following formula (3).
- s represents the weight fraction of the crystalline polymer in the resin composition for toner
- t represents the resin for toner. Represents the weight fraction of amorphous polymer in the composition.
- the crystalline polymer and the amorphous polyester are very well compatible with each other.
- a crystalline polyester is used as the crystalline polymer. If the tellurium and the non-crystalline polyester have a common monomer component such as terephthalic acid as a constituent monomer, the compatibility can be improved.
- the crystalline polyester is polybutylene terephthalate (PBT) or polyethylene terephthalate (PET), and the non-crystalline polyester is terephthalanolic acid, neopentyl glycol, and ethylene glycol and / or 1,4-butanediol. When they are obtained by polymerizing a monomer mixture containing as a main component, both are well compatible.
- the preferred lower limit of the content of the crystalline polymer is 2% by weight, and the preferred upper limit is 30% by weight. /.
- the preferred lower limit of the content of the non-crystalline polyester is 98% by weight, and the preferred upper limit is 70% by weight.
- the content of the crystalline polymer is 2% by weight. If it is less than / 0 , the high-temperature offset resistance may be poor, and if it exceeds 30% by weight, the low-temperature fixability may be poor.
- a more preferred lower limit is 3% by weight, a more preferred upper limit is 20% by weight, a still more preferred lower limit is 5% by weight, and a still more preferred upper limit is 15% by weight.
- Such molecular weight characteristics of the resin composition for a toner of the present invention can be realized by a combination of the molecular weights of the above-mentioned crystalline polymer component and non-crystalline polyester component. It may be adjusted by blending a low molecular weight amorphous polyester having a molecular weight of up to 800,000. As the low-molecular-weight non-crystalline polyester, those similar to the non-crystalline polyester can be used.
- the resin composition for a toner of the present invention preferably also contains a nucleating agent.
- the crystal nucleating agent is not particularly limited, but examples thereof include metal oxides such as zinc oxide, magnesium oxide, silicon oxide, iron oxide (111), and titanium oxide; calcium carbonate, magnesium carbonate, calcium silicate, and calcium oxide.
- Inorganic salts such as lead oxide, magnesium silicate, calcium phosphate, calcium sulfate, barium sulfate, potassium titanate; organic acid salts such as calcium oxalate, sodium oxalate; Clay, kaolin, clay Mai power, wollastonite and the like.
- the shape of the crystal nucleating agent is not particularly limited, and may be plate-like, spherical, or amorphous.
- the acid value of the resin composition for a toner of the present invention is not particularly limited, but is preferably 1 to 30.
- Such an acid value is caused by an acidic functional group at the terminal of the main chain of the crystalline polymer or the non-crystalline polyester, specifically, for example, a carboxyl group.
- the acid value is within this range, the obtained toner has excellent low-temperature fixability and also has an improved affinity for paper.
- the resin composition for a toner of the present invention unlike the conventional resin composition for a cross-linked toner containing a polymer having a high molecular weight of 1,000,000, contains only a polymer having a molecular weight of about several hundred thousand. Therefore, the acidic functional groups are relatively uniformly distributed, and higher low-temperature fixability can be obtained.
- the method for producing the resin composition for a toner of the present invention is not particularly limited.
- the crystalline polymer and the amorphous polyester are separately prepared, and the obtained crystalline polymer and the amorphous polyester are obtained. Are mixed at a temperature equal to or higher than the melting point of the crystalline polymer.
- the resin composition for a toner of the present invention as a binder resin, if necessary, a colorant, a charge control agent, a magnetic material, a rubbery polymer, a resin for a toner comprising a styrene-monoacrylate copolymer, a carrier, By mixing with a cleaning property improver or the like, a toner can be manufactured. Such a toner is also one of the present invention.
- the coloring agent is not particularly limited, and examples thereof include furnace black, lamp black, carbon black such as thermal black, acetylene black, and channel black, aniline black, phthalocyanine pnolay, quinoline yellow lamp black, and rhodamine.
- B azo pigments, perylene pigments, perinone pigments, anthraquinone pigments, dioxazine pigments, isoindoline pigments, isoindolinone pigments, sulene pigments, indico pigments, quinophthalones, diketopyro pyrroles, quinacridones And the like.
- the amounts of these colorants are The amount is preferably 1 to 10 parts by weight based on 100 parts by weight of the resin composition.
- charge control agents There are two types of charge control agents, positive charge and negative charge.
- Examples of the positive charge control agent include Nig Mouth Dye, ammonium salts, pyridium salts, and azines.
- Examples of the negative charge control agents include chromium complexes and iron complexes. And the like.
- an acid-modified charge control agent is preferable.
- salicylic acid-modified it is crosslinked with the resin composition for toner to exhibit rubber elasticity.
- a metal complex of an alkyl-substituted salicylic acid such as a di-tert-butylsalicylic acid potassium complex such as a di-tert-butylsalicylic acid zinc complex is preferable because it is colorless or pale and does not affect the color tone of the toner.
- a charge control resin (CCR) can also be suitably used.
- the charge control resin include a styrene acryl polymer obtained by copolymerizing a monomer containing a quaternary ammonium salt, an organic fluorine monomer, a sulfonic acid group-containing monomer, and a phenol maleimide monomer.
- the compounding amount of these charge control agents is preferably from 0.1 to 10 parts by weight based on 100 parts by weight of the resin composition for toner.
- magnétique material examples include “TAROXBL Series” (trade name, manufactured by Titanium Industries), “EPT Series”, “MAT Series”, and “MTS Series” (all manufactured by Toda Kogyo).
- Product name “DCM series” manufactured by Dowa Iron Powder Co., Ltd.
- Product name “KBC series” manufactured by Dowa Iron Powder Co., Ltd.
- Product name “ ⁇ ⁇ I series” Product name “KBF series”
- Product name “ ⁇ ⁇ ⁇ series” any Also manufactured by Kanto Denka Kogyo Co., Ltd.
- Bay ⁇ Xide E series manufactured by Bayer AG.
- Examples of the rubbery polymer include natural rubber, polyisoprene rubber, polybutadiene rubber, nitrile rubber (acrylonitrile-butadiene copolymer), chloroprene rubber, butyl rubber, acryl rubber, polyurethane elastomer, silicone rubber, and ethylene-propylene rubber.
- Polymer ethylene-propylene-one-gen copolymer, chlorosulfinated polyethylene, ethylene-butyl acetate copolymer, ethylene-acrylic acid copolymer, ethylene-acrylic acid ester copolymer, chlorinated polyethylene, epichlorohydrin rubber , Synthetic rubbers such as nitrile isoprene rubber, elastomers such as polyester elastomers and urethane elastomers.
- Styrene Aromatic hydrocarbons such as butadiene-styrene block copolymer, styrene-isoprene-styrene block copolymer, styrene-ethylenebutylene-styrene block copolymer, styrene-ethylenepropylene-styrene block copolymer, and conjugated gen And a block copolymer with a hydrocarbon.
- the block copolymer may be a mixture of a styrene-butadiene block copolymer, a styrene-isoprene block copolymer, or the like, or a mixture of these hydrogenated products.
- a rubber-like polymer composed of a block copolymer of an aromatic hydrocarbon having a polar group such as a hydroxyl group, a carboxyl group, an aldehyde group, a sulfonyl group, a cyano group, a nitro group, or a halogen group at the terminal and a conjugated gen, It is preferable because it has excellent affinity with the toner.
- a polar group such as a hydroxyl group, a carboxyl group, an aldehyde group, a sulfonyl group, a cyano group, a nitro group, or a halogen group at the terminal and a conjugated gen
- the rubber-like polymer can improve the resin strength of the resin contained in the toner. Therefore, the toner containing the rubbery polymer can prevent the filming phenomenon of the toner, and can provide a toner suitable for a non-magnetic one-component toner requiring high resin strength.
- the carrier examples include simple metals such as iron, nickel, copper, zinc, cobalt, manganese, chromium, and rare earths, alloys, oxides, and ferrite.
- the surface of the carrier may be oxidized.
- the carrier surface is polytetrafluoroethylene, monochrome monofluoroethylene polymer, polyvinylidene fluoride, silicone polymer, polyester, metal complex of di-tert-butylsalicylic acid, styrene-based polymer, acrylic polymer, polyamide, and polyvinyl butyral , Nig Mouth Synthetic Basic Dye, silica powder, alumina powder and the like.
- the cleaning property improving agent is not particularly limited as long as the fluidity of the toner is improved by mixing with the toner particles. When the fluidity of the toner is improved, the toner is less likely to adhere to the cleaning blade.
- vinylidide fluoride Polymer powders such as fluoropolymer powders such as epoxy polymers, acrylate polymer powders such as acrylate polymers, metal salt powders such as zinc stearate, calcium stearate, lead stearate, etc., metal oxide powders such as zinc oxide powder and titanium oxide powder Fine powder, silica powder, silane coupling agent, titanium coupling agent, silica powder surface-treated with silicon foil, fumed silica, and the like.
- a sphere having a particle size of 0.05 to 0.5 ⁇ which is made of an acrylic polymer or a styrene polymer, can be suitably used.
- the toner of the present invention preferably further contains a low melting point compound having a melting point of 70 to 120 ° C. If the temperature is lower than 70 ° C, the storage stability and the fluidity of the obtained toner may be inferior. If the temperature is higher than 120 ° C, the improvement in low-temperature fixability may be insufficient.
- the low-melting point compound having a melting point of 70 to 120 ° C. is not particularly limited, but a crystalline polyester or wax is preferable.
- the crystalline polyester is not particularly limited, but an aliphatic polyester is preferably used. Aliphatic polyesters have excellent compatibility with polyester resin compositions for toners, and do not cause the low-melting point compounds to fall off during toner pulverization. In addition, since aliphatic polyester has a higher molecular weight than wax, it does not easily bleed from the toner, and has excellent toner preservability and fluidity.
- the low melting point compound having a melting point of 70 to 120 ° C. is a resin composition for toner. It may be blended in a product.
- the wax when wax is used as the low melting point compound having a melting point of 70 to 120 ° C., the wax can also serve as a release agent.
- the wax examples include, for example, polypropylene wax, polyethylene wax, microcrystalline wax, polyethylene wax, and other olefin waxes and paraffin waxes; canolenapa wax, sazonole wax, montanic acid ester waxes, and the like.
- Saturated alcohol-based waxes and aliphatic alcohol-based waxes Saturated alcohol-based waxes and aliphatic alcohol-based waxes; polyhydric alcohol-based waxes such as sorbitol; saturated fatty acid amide-based waxes such as linoleic acid amide, oleic acid amide, and lauric acid amide; Saturated fatty acid bisamide wax such as methylenebisstearic acid amide, ethylenebiscapric acid amide, ethylenebislauric acid amide, hexamethylenebisstearic acid amide; ethylenebisoleic acid amide, hexamethylenebis Oleic acid amide, N, N '— Unsaturated acid amide wax such as adipic acid T amide, N, N, -dioleyl sebacic acid amide; m-xylene bisstearic acid amide, N, ⁇ '-distearyl isophthalic acid amide, etc.
- Aromatic bisamide-based waxes such as calcium stearate, calcium laurate, zinc stearate, and magnesium stearate; and a graft-modified wax obtained by graft-polymerizing a beer-based monomer such as styrene and diacrylic acid to polyolefin; Partial ester wax obtained by reacting a fatty acid such as behenic acid monoglyceride with a polyhydric alcohol; methyl ester wax having a hydroxyl group obtained by hydrogenating vegetable fats and oils; and ethylene having a high ethylene component content Monobutyl acetate copolymer wax; saturated stearyl such as acrylic acid Long chain alkyl ⁇ chestnut rates wax such acrylate Wakkusu; aromatic ⁇ chestnut rates waxes such as benzyl ⁇ chestnut rate Wa click scan and the like.
- fatty acid metal salts such as calcium stearate, calcium laurate, zinc stearate, and magnesium stearate
- a long-chain alkyl phthalate wax / aromatic phthalate wax is preferable because it has excellent compatibility with the resin composition for a toner and a highly transparent toner can be obtained.
- These tuss may be used alone or in combination of two or more, and it is particularly preferable to use two or more waxes having different melting points by 30 ° C. or more.
- the size of the wax in the toner is not particularly limited, but the major axis is preferably 2 / m or less.
- the low melting point compound having a melting point of 70 to 120 ° C. preferably has a difference in SP value from the resin composition for toner of 0.2 to 3.0. If less than 0.2, The glass transition temperature of the resin composition for toner significantly decreases and the storage stability may be inferior. If it exceeds 3.0, the compatibility with the resin composition for toner is insufficient. easily fall off and the low-temperature fixability is poor.
- the SP value is an index indicating the affinity of the surface of the substance, and can be evaluated based on the solubility of a solvent having a different SP value.
- the dispersion diameter of the low melting point compound having a melting point of 70 to 120 ° C in the toner of the present invention is preferably 0.2 to 3 // m. If it is less than 0.2 im, the glass transition temperature of the resin composition for a toner will be remarkably lowered and the storage stability will be poor. If it exceeds 3 / m, the compatibility with the resin composition for a toner will be inadequate. When the toner is pulverized, the low-melting point compound may fall off and become weak, resulting in poor low-temperature fixability. More preferably, it is 0.5 to 2. Ozm.
- the compounding amount of the low melting point compound having a melting point of 70 to 120 ° C. in the toner of the present invention is preferably 0.2 to 10% by weight. If the amount is less than 0.2% by weight, the effect of improving the low-temperature fixing property may be insufficient, and if it exceeds 10% by weight, the storage stability may be poor. More preferably, it is 0.5 to 4% by weight.
- the toner of the present invention preferably has a peak at a position where the weight average molecular weight is 2000 or less, as measured by gel permeation chromatography. Thereby, fixability is improved. It is preferable that the toner of the present invention has a peak at a position where the weight average molecular weight is 10,000 or more when measured by gel permeation chromatography. This improves the water resistance.
- the particle size of the toner of the present invention is not particularly limited, but when it is 10 / xm or less, particularly high image quality can be obtained. It is more preferably 5 / m or less.
- the water content of the toner of the present invention is not particularly limited, it is preferably 0.01 to 0.2% by weight. If the content is less than 0.01% by weight, production becomes difficult due to production problems, and if the content exceeds 0.2% by weight, sufficient charge stability may not be obtained.
- angle of repose of the toner of the present invention is not particularly limited, a preferable lower limit of the angle of repose at 23 ° C. and a humidity of 60% is 1 degree, and a preferable upper limit is 30 degrees. Less than once In some cases, toner handling may be difficult. When the temperature exceeds 30 degrees, toner fluidity may be insufficient.
- the angle of repose of the toner can be measured by, for example, a powder tester (for example, PT-N type manufactured by Hosokawa Micron Corporation) or the like.
- the surface roughness of the toner of the present invention is not particularly limited, it is preferably 0.1 to 2 / m. If it is less than 0.01 ⁇ , it may be difficult to perform printing, and if it exceeds 2 m, the surface gloss of the obtained image may be insufficient.
- the surface roughness can be measured by a method defined in JISB0601 as a method for measuring arithmetic average roughness (R a) of a printed portion of an image printed using the toner of the present invention. .
- the toner of the present invention When the toner of the present invention is used for an application that requires particularly excellent surface gloss, the toner of the present invention has a melt viscosity at 150 ° C. of 100 to 50,000 mP. a ⁇ s is preferred. If it is less than lOOmPas, the preservability may be poor, and if it exceeds 50,000mPas, sufficient surface gloss may not be obtained. A more preferred upper limit is 10,000 mPa ⁇ s.
- the toner of the present invention can exhibit good fixability over a wide range from low to high temperatures, and is excellent in both low-temperature fixability, high-temperature offset resistance, and blocking resistance. It is economical because the time required for printing can be shortened, and it is possible to maintain the sharpness of the image even when the temperature of the roller drops, so that printing can be speeded up. Can be. Since the toner of the present invention is colorless and transparent, a desired color can be easily adjusted. The toner of the present invention is excellent in image reproducibility.
- the toner of the present invention may be fixed by a fixing roller coated with a release oil, but can exhibit good fixing properties even when the release oil is not applied to the fixing roller.
- the crystalline polymer and the non-crystalline polyester used in the resin composition for a toner of the present invention can be favorably used in a wide range from low to high temperatures without being crosslinked or separately compounded with a high molecular weight resin.
- a toner using such a resin material for a non-crosslinked toner is more easily crushed than a toner using a toner resin containing a high molecular weight resin, exhibits sharp melting characteristics, and has a glossy fixed image. Is obtained.
- BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in more detail with reference to examples, but the present invention is not limited to only these examples. (Example 1)
- a distillation column, a water separator, a nitrogen gas inlet tube, a thermometer, and a stirring device are installed in the OL reaction vessel according to a conventional method.
- 100 mol of terephthalanolic acid as a dicarboxylic acid component is added.
- 1,4-butanediole (120 monoles) is calorie as a diol component, and titanium tetrabutoxide (TBB) (0.05 mol) is charged as an esterification condensation catalyst.
- TTBB titanium tetrabutoxide
- the condensation reaction was performed at a stirring rotation speed of 60 rpm, and the free diol generated in the condensation reaction was distilled out of the reaction system to obtain polybutylene terephthalate.
- a distillation column In a 60 L reaction vessel, a distillation column, a water separator, a nitrogen gas inlet tube, a thermometer, and a stirring device were installed according to a conventional method.In a nitrogen gas atmosphere, 90 mol of terephthalic acid as a dicarboxylic acid component was added.
- a charge control agent (Bontron S-34: manufactured by Orient Chemical Co., Ltd.), 5 parts by weight of carbon black, and 1 part by weight of carnabatasse were thoroughly mixed with a Henschel mixer. The mixture was melt-kneaded at 120 ° C, cooled, and coarsely ground. Then, it was pulverized with a jet mill (Labjet: manufactured by Nippon Yumatic Co., Ltd.) to obtain a toner powder having an average particle size of about 8 xm. Further, this toner powder was classified by a classifier (MDS-2: manufactured by Nippon Pneumatic) to obtain a fine toner powder having an average particle diameter of about 10 im. To 100 parts by weight of this toner fine powder, 1.0 part by weight of hydrophobic silica (R972, manufactured by Nippon Aerosil Co., Ltd.) was uniformly mixed (externally added) to produce toner.
- a charge control agent (Bontron S-34: manufactured by Orient Chemical Co., Ltd
- the resin composition for a toner and the toner composition were prepared in the same manner as in Example 1 except that the compounding ratio of polybutylene terephthalate (PBT) and the non-crystalline polyester was changed to the composition shown in Table 1. A toner was obtained. (Example 4)
- a crystalline polyester and a non-crystalline polyester were obtained in the same manner as in Example 1 except that 100 mol of terephthalic acid and 120 mol of ethylene glycol were used as raw material monomers of the crystalline polyester.
- a resin composition for toner and a toner were obtained in the same manner as in Example 1, except that the obtained crystalline polyester and non-crystalline polyester were used, and the kneading temperature was set at 270 ° C.
- Example 2 The same procedure as in Example 1 was repeated except that 60 mol of terephthalic acid, 40 mol of isophthalic acid and 120 mol of 1,4-butanediol were used as the raw material monomers for the crystalline polyester. And polyester.
- a resin composition for toner and a toner were obtained in the same manner as in Example 1 except that the obtained crystalline polyester and non-crystalline polyester were used and the kneading temperature was set at 160 ° C.
- Example 1 100 parts by weight of the non-crystalline polyester prepared in Example 1 was mixed with 1 part by weight of a charge control agent (Bontron S-34: manufactured by Orient Chemical Co., Ltd.), 5 parts by weight of carbon black and 1 part by weight of carnauba wax. Then, the mixture was melt-kneaded at 120 ° C, cooled, and coarsely pulverized. Then, it was finely pulverized with a jet mill (Labojet: manufactured by Nippon Pneumatic Co., Ltd.) to obtain a toner powder having an average particle diameter of about 8 / m.
- a charge control agent Bontron S-34: manufactured by Orient Chemical Co., Ltd.
- the toner powder was classified by a classifier (MDS-2: manufactured by Japan-Umatic Co., Ltd.) to obtain a fine toner powder having an average particle diameter of about 10 ⁇ m.
- MDS-2 manufactured by Japan-Umatic Co., Ltd.
- To 100 parts by weight of the toner fine powder 1.0 part by weight of hydrophobic silica (R972, manufactured by Nippon Aerosil Co., Ltd.) was uniformly mixed (externally added) to produce a toner.
- the condensation reaction was carried out at a stirring rotation speed of 60 rpm, and the free diol generated in the condensation reaction was distilled out of the reaction system to obtain a non-binding polyester.
- a toner was manufactured in the same manner as in Comparative Example 3 except that the obtained non-crystalline polyester was used. (Evaluation)
- HFIP-806M 2 pieces manufactured by Showa Denko was connected in series to the power column, and the weight average molecular weight was measured. .
- the measurement conditions were as follows: the temperature was 40 ° C, the sample was a 0.1% by weight hydroxyfluoroisopropanol (HFIP) solution (passed through a 0.45 m filter), the injection amount was 100, As a carrier solvent, ⁇ per liter? HFIP containing 0.68 g of eight was used. Standard polystyrene was used as a calibration sample.
- HFIP hydroxyfluoroisopropanol
- KF-800P (1), KF-806M (2), KF-802. Were used in series, and the molecular weight and molecular weight distribution were measured.
- the measurement conditions are as follows: temperature is 40 ° C, sample is 0.2 weight. /.
- the acid value was determined by a method based on JIS K 6751 except that tetrahydrofuran (THF) was used instead of ethyl alcohol.
- the color of the resin composition for toner was visually observed.
- the resin composition for toner was placed on a preparation, heated to 10 ° C. using a hot plate or the like to soften, and then covered with a cover glass and pressed lightly. Thereafter, the resin in an amorphous state was recrystallized by heating to 150 ° C., and then returned to room temperature. This was observed using a polarizing microscope (manufactured by Olympus Corporation) with a magnification of 200 times, and the particle diameter of the crystal particles that could be distinguished was measured, and the average was determined. The measurement was performed in five shooting fields, and the average value was calculated.
- the resin composition for toner was hot-pressed at 150 ° C. to produce a 1 mm-thick plate-shaped sample.
- the total light transmittance T i (%) and the diffuse transmittance T d (%) were measured using TC-HIII DPK manufactured by Tokyo Denshoku Co., Ltd., according to the method described in JISK 7105.
- the haze value H was calculated by the above equation (4).
- the resin composition for toner After melting the resin composition for toner, it was shaped into a disk having a diameter of 25 mm and a height of 1 mm, and this was used as a test sample. This was mounted on a 25 mm-diameter disk-to-disk jig, and the shear strain was measured using a relaxation modulus measuring device (RMS_800, manufactured by Rheometrics Co.) at 190 ° C and an initial shear strain of 5%. 0.1 seconds after the application, the relaxation modulus G 5% (0.1) and the relaxation modulus at the peak position of the relaxation modulus curve were measured, and the gradient of the relaxation modulus curve was calculated by the above equation (1). . [Measurement of relaxation modulus and gradient of relaxation modulus curve]
- the resin composition for toner After melting the resin composition for toner, it was shaped into a disk having a diameter of 25 mm and a height of 1 mm, and this was used as a test sample. This was mounted on a 25 mm-diameter disk-to-disk jig and subjected to a shear strain at 190 ° C and an initial shear strain of 450% using a relaxation modulus measuring device (RMS_800 manufactured by Rheometrics). The relaxation modulus at 0.02 and 0.1 seconds after was measured, and the slope of the relaxation modulus curve was calculated by the above equation (2).
- RMS_800 relaxed shear strain measuring device manufactured by Rheometrics
- the electrophotographic copying machine used was a KM-4230 manufactured by Kyocera Mita that was modified so that the set temperature of the heat fixing roller could be changed up to 220 ° C.
- the set temperature of the heat fixing roller was changed stepwise to obtain a copy in which the unfixed toner image was fixed on the transfer paper by the heat fixing roller at each set temperature.
- a temperature region where no stain was generated was defined as a non-offset temperature region.
- the maximum value in the non-offset temperature region was defined as the high temperature offset temperature, and the minimum value was defined as the low temperature offset temperature.
- the copying is performed by changing the set temperature of the heat fixing roller of the electrophotographic copying machine in a step-by-step manner, and the margin and the fixed image are not stained by the toner without fogging in the margin and the fixed image.
- the fixed image of the obtained copy was rubbed with a sand eraser for a typewriter, if the decrease in the density of the fixed image was less than 10%, it was judged that the fixation was good, and the minimum temperature at that time was determined.
- the fixed image was visually observed and evaluated according to the following criteria.
- the image density was measured using a Macbeth photometer.
- G No capri and unevenness, high image density of 1.4 to 1.6, and excellent resolution, transferability and gradation.
- Example 1 Example 2
- Example 3 Example 4 Terephthalic acid 100 100 100 100 Raw material
- Relaxation modulus G 5% max (Pa) 1.11 X 10 5 2.05 XI 0 5 3.63 X 10 5 5.20 ⁇ 10 ⁇ Review Rate of change of relaxation modulus D 25.5 23.4 22.3 21.7 Valuation Relaxation modulus ( 0.02 ) (Pa) 1.47 X 10 4 3.03 X 10 4 4.55 X 10 4 6.47 ⁇ 10 4 Relaxation modulus (0.1) (Pa) 4.90 X 10 2 1.16 10 3 1.77 X 10 3 2.58 ⁇ 10 3 gradient K -18.5 -17.7 -17.6 -17.5 blocking (wt 0/0) 0.5 0.5 0.5 0.5 Bok filming None None None None evaluation Na gloss Rating 39 38 37 37 1 hot offset temperature (° C) 190 205 220 or more 220 or more of
- Terephthalic acid 90 90 90 95 Irifalic acid 5 5 5 ⁇ Phthalic anhydride 5 5 5
- Tpc Fat Recrystallization peak temperature (3 ⁇ 4)--One set Tpc-Tic (.C)----Composition Relaxation modulus G s% (0.1) (Pa)--2.23 X 10 4.08 X 10 2 things
- a distillation column In a 60 L reaction vessel, a distillation column, a water separator, a nitrogen gas inlet tube, a thermometer, and a stirring device were installed according to a conventional method.
- 90 mol of terephthalic acid as a dicarboxylic acid component was added.
- 5 mol of isophthalic acid and 5 mol of phthalic anhydride as bent monomer components 60 monoles of neopentylene glycolonole as branching monomer components, 60 mol of ethylene glycol as other diols, and titanium tetrabutoxide (TBB) as an esterification condensation catalyst 0.05 mol was charged, and 200.
- TAB titanium tetrabutoxide
- a charge control agent (Bontron S-34: manufactured by Orient Chemical Co., Ltd.), 5 parts by weight of carbon black, and 1 part by weight of carnabatas were thoroughly mixed with a Henschel mixer. Thereafter, the mixture was melt-kneaded at 130 ° C, cooled, and coarsely ground. Then, it was finely pulverized with a jet mill (Labjet: manufactured by Japan-Umatic Co., Ltd.) to obtain a toner powder having an average particle size of about 8 / m.
- a jet mill (Labjet: manufactured by Japan-Umatic Co., Ltd.) to obtain a toner powder having an average particle size of about 8 / m.
- this toner powder was classified by a classifier (MDS-2: manufactured by Nippon Pneumatic) to obtain a fine toner powder having an average particle diameter of about 10 ⁇ m.
- a toner was manufactured by uniformly mixing (externally adding) 1.0 part by weight of a hydrophobic silica (R972: manufactured by Nippon Aerosil Co., Ltd.) to 100 parts by weight of this toner fine powder.
- a distillation column, a water separator, a nitrogen gas inlet tube, a thermometer, and a stirring device were installed in a 60 L reaction vessel according to a conventional method.Under a nitrogen gas atmosphere, 100 mol of terephthalic acid as a dicarboxylic acid component and a diol component were used. 1,4-butanediol (120 mol) and titanium tetrabutoxide (TBB) (0.05 mol) as an esterification condensation catalyst were charged at 220 ° C while distilling off water and methanol from the distillation column. Was carried out. The esterification reaction was terminated when water and methanol stopped distilling from the distillation column.
- a distillation column In a 60 L reaction vessel, a distillation column, a water separator, a nitrogen gas inlet tube, a thermometer, and a stirring device were installed according to a conventional method.
- 90 mol of terephthalic acid as a dicarboxylic acid component was added.
- 5 moles of isophthalic acid and 5 moles of phthalic anhydride as bending monomer components 60 moles of neopentylene glycol as branching monomer components, 60 moles of ethylene dalicol as other dioles, and titanium tetrabutoxide (TBB) as an esterification condensation catalyst 0.05 mol was charged, and the esterification reaction was carried out at 200 ° C. while distilling off the produced water and methanol from the distillation column. The esterification reaction was terminated when water and methanol did not evaporate from the distillation column.
- TAB titanium tetrabutoxide
- a distillation column In a 60 L reaction vessel, a distillation column, a water separator, a nitrogen gas inlet tube, a thermometer, and a stirring device were installed according to a conventional method.In a nitrogen gas atmosphere, 90 mol of terephthalic acid as a dicarboxylic acid component was added. 10 mol of isophthalic acid as a bent monomer component, 60 mol of neopentylene glycol as a branched monomer component, 60 mol of ethylene glycol as another diol, and 0.05 mol of titanium tetrabutoxide (TBB) as an esterification condensation catalyst The esterification reaction was carried out at 200 ° C. while distilling off the produced water and methanol from the distillation column. The esterification reaction was terminated when water and methanol stopped distilling from the distillation column.
- TAB titanium tetrabutoxide
- a charge control agent (Bontron S-34: manufactured by Orient Chemical Co., Ltd.), 5 parts by weight of a car pump rack and 1 part by weight of carnabatas were sufficiently mixed with a Henschel mixer. Then, the mixture was melt-kneaded at 130 ° C, cooled, and coarsely ground. Then, it was finely pulverized with a jet mill (Labjet: manufactured by Hamamatsu Pneumatic Co., Ltd.) to obtain a toner powder having an average particle size of about 8 / x m.
- a jet mill (Labjet: manufactured by Hamamatsu Pneumatic Co., Ltd.) to obtain a toner powder having an average particle size of about 8 / x m.
- this toner powder was classified by a classifier (MD S-2: manufactured by Nippon Pneumatic Co., Ltd.) to obtain a fine toner powder having an average particle diameter of about 10 // m.
- a toner was manufactured by uniformly mixing (externally adding) 1.0 part by weight of hydrophobic silica (R972: manufactured by Nippon Aerosil Co., Ltd.) to 100 parts by weight of this toner fine powder.
- a resin composition for toner and a toner were obtained in the same manner as in Example 6, except that the amount of the crystalline polyester was changed to 30 parts by weight in the production of the resin composition for toner.
- a distillation tower In a 60 L reaction vessel, a distillation tower, a water separator, a nitrogen gas inlet tube, a thermometer, and a stirring device were installed according to a conventional method.Under a nitrogen gas atmosphere, 9.9 mol of terephthalic acid as a dicarboxylic acid component was added. 1 mol of trimellitic acid, 105 mol of a bisphenol A propylene oxide adduct as a diol component, and 0.05 mol of dibutyltin oxide as an esterification condensation catalyst were charged at 200 ° C. The esterification reaction was performed while distilling methanol from the distillation column. The esterification reaction was terminated when water and methanol stopped distilling from the distillation column.
- the condensation reaction was carried out at a stirring rotation speed of 60 rpm, and the free diol produced in the condensation reaction was distilled out of the reaction system to obtain an amorphous polyester.
- a toner was produced in the same manner as in Example 5, except that only the obtained non-crystalline polyester was used as a toner resin. The same evaluation as described above was performed for the toner resin compositions and toners prepared in Examples 5 to 7 and Comparative Example 5.
- a crystalline polyester and a non-crystalline polyester were produced using the raw material monomers shown in Table 4, and a toner resin composition and a toner were produced in the same manner as in Example 1 except that these were used. went.
- Example 10 Example 10 0 Terephthalic acid (mol) 100 100 100 100 Polyisophthalic acid (mol)
- Amorphous polyester 93 93 90 Carnauba wax (parts by weight) 1 1 1 Acid value of resin 02 3 10 Color of resin ⁇ Hu Colorless Colorless transparent
- a crystalline polyester and an amorphous polyester were produced using the raw material monomers shown in Table 5, and a toner resin composition and a toner were produced in the same manner as in Example 1 except that these were used. went.
- Example 1 Example 12 Terephthalic acid (mol) 100
- Neo-Gentylgericol (mol) 60 60 Ethylene glycol'col (mol) 60 60 Tetra-bisphenol A--ethylene oxide adduct (mol)
- Color reproduction GF (Examples 13 to 16) A crystalline polyester, a non-crystalline polyester (A) and a non-crystalline polyester (B) were produced using the raw material monomers shown in Table 6, and were used except that these were used. example 6 to prepare a resin composition for toner and the toner in the same manner as, the c results of evaluation are shown in Table 6.
- the resin composition for toners and toner which are excellent in low-temperature fixability, high-temperature offset resistance, and blocking resistance, and can perform favorable color development can be provided.
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- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Developing Agents For Electrophotography (AREA)
Abstract
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/523,072 US7485401B2 (en) | 2002-07-30 | 2003-07-30 | Resin composition for toner, and toners |
| AU2003252721A AU2003252721A1 (en) | 2002-07-30 | 2003-07-30 | Resin composition for tonor, and toners |
| EP03795205A EP1550915B1 (en) | 2002-07-30 | 2003-07-30 | Resin composition for toner, and toners |
Applications Claiming Priority (22)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002221563 | 2002-07-30 | ||
| JP2002-221563 | 2002-07-30 | ||
| JP2002-299671 | 2002-10-11 | ||
| JP2002-299669 | 2002-10-11 | ||
| JP2002-299667 | 2002-10-11 | ||
| JP2002-299673 | 2002-10-11 | ||
| JP2002299671A JP4034635B2 (ja) | 2002-10-11 | 2002-10-11 | トナー |
| JP2002299673 | 2002-10-11 | ||
| JP2002299674A JP4037731B2 (ja) | 2002-10-11 | 2002-10-11 | トナー用樹脂組成物及びトナー |
| JP2002299667A JP2004264317A (ja) | 2002-10-11 | 2002-10-11 | トナー用樹脂組成物及びトナー |
| JP2002-299674 | 2002-10-11 | ||
| JP2002299669A JP2004264318A (ja) | 2002-07-30 | 2002-10-11 | トナー用樹脂組成物及びトナー |
| JP2002-332727 | 2002-11-15 | ||
| JP2002332727A JP4053866B2 (ja) | 2002-07-30 | 2002-11-15 | トナー用樹脂組成物及びトナー |
| JP2003164151A JP2004264802A (ja) | 2002-07-30 | 2003-06-09 | トナー用樹脂組成物及びトナー |
| JP2003-164151 | 2003-06-09 | ||
| JP2003-164153 | 2003-06-09 | ||
| JP2003164154A JP2004264804A (ja) | 2002-07-30 | 2003-06-09 | トナー用樹脂組成物及びトナー |
| JP2003164152 | 2003-06-09 | ||
| JP2003-164152 | 2003-06-09 | ||
| JP2003164153A JP2004264803A (ja) | 2002-07-30 | 2003-06-09 | トナー用樹脂組成物及びトナー |
| JP2003-164154 | 2003-06-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2004025372A1 true WO2004025372A1 (ja) | 2004-03-25 |
Family
ID=31999951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2003/009628 Ceased WO2004025372A1 (ja) | 2002-07-30 | 2003-07-30 | トナー用樹脂組成物及びトナー |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US7485401B2 (ja) |
| EP (1) | EP1550915B1 (ja) |
| AU (1) | AU2003252721A1 (ja) |
| WO (1) | WO2004025372A1 (ja) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2005203723B2 (en) * | 2004-11-18 | 2007-02-15 | Fujifilm Business Innovation Corp. | Electrostatic latent image developing toner and manufacturing method thereof |
| CN100507727C (zh) * | 2004-09-22 | 2009-07-01 | 佳能株式会社 | 调色剂 |
| CN101977991B (zh) * | 2009-02-26 | 2013-02-06 | 谢科林股份公司 | 粉末组合物,特别是用于涂布金属基底的粉末组合物 |
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| KR101109809B1 (ko) * | 2003-06-26 | 2012-03-14 | 세키스이가가쿠 고교가부시키가이샤 | 도공 페이스트용 결합제 수지 |
| FR2863541B1 (fr) * | 2003-12-16 | 2007-05-25 | Solvay | Procede de fabrication de materiaux composites, materiaux composites et mise en oeuvre de ceux-ci. |
| US20060046175A1 (en) * | 2004-08-25 | 2006-03-02 | Konica Minolta Holdings, Inc. | Toner for electrostatic latent image development and image forming method |
| US20090181317A1 (en) * | 2004-09-30 | 2009-07-16 | Tomoegawa Co., Ltd. | Toner for developing electrostatic image and process for producing the same |
| JP2007004033A (ja) * | 2005-06-27 | 2007-01-11 | Fuji Xerox Co Ltd | 静電荷現像用トナー及びその製造方法、並びに静電荷現像剤、画像形成方法 |
| EP2012184B1 (en) * | 2006-04-21 | 2013-08-21 | Kao Corporation | Toner |
| US8383765B2 (en) * | 2006-04-21 | 2013-02-26 | Kao Corporation | Polyester for toner |
| JP4760690B2 (ja) * | 2006-12-04 | 2011-08-31 | 富士ゼロックス株式会社 | 静電荷像現像用トナー及びその製造方法、並びに静電荷像現像剤、トナーカートリッジ、プロセスカートリッジ及び画像形成装置 |
| US7547499B2 (en) * | 2006-12-22 | 2009-06-16 | Xerox Corporation | Low melt toner |
| US7736832B2 (en) | 2007-01-29 | 2010-06-15 | Xerox Corporation | Toner compositions |
| JP4900093B2 (ja) * | 2007-07-04 | 2012-03-21 | 富士ゼロックス株式会社 | 電子写真用トナー、電子写真用現像剤、トナーカートリッジ及び画像形成方法 |
| JP2010181438A (ja) * | 2009-02-03 | 2010-08-19 | Fuji Xerox Co Ltd | 静電荷像現像トナー用ポリエステル樹脂及びその製造方法、静電荷像現像トナー、静電荷像現像剤、トナーカートリッジ、プロセスカートリッジ、画像形成方法、並びに、画像形成装置 |
| JP5487829B2 (ja) * | 2009-09-14 | 2014-05-14 | 株式会社リコー | 画像形成装置 |
| JP5685984B2 (ja) | 2010-04-21 | 2015-03-18 | 株式会社リコー | 結晶性ポリエステルを添加したトナー |
| JP2012032775A (ja) * | 2010-07-07 | 2012-02-16 | Ricoh Co Ltd | 電子写真画像形成方法、現像剤及びプロセスカートリッジ |
| JP5533454B2 (ja) * | 2010-08-31 | 2014-06-25 | 株式会社リコー | トナー及び現像剤 |
| US9176406B2 (en) | 2012-08-17 | 2015-11-03 | Ricoh Company, Ltd. | Toner, development agent, image forming apparatus, and process cartridge |
| JP5910555B2 (ja) | 2013-03-25 | 2016-04-27 | 富士ゼロックス株式会社 | 静電荷像現像トナー、静電荷像現像剤、トナーカートリッジ、プロセスカートリッジ、画像形成装置、および画像形成方法 |
| KR20150050652A (ko) * | 2013-10-29 | 2015-05-11 | 삼성전자주식회사 | 정전 잠상 현상용 토너 |
| JP6748439B2 (ja) | 2015-02-25 | 2020-09-02 | キヤノン株式会社 | トナー及びトナーの製造方法 |
| JP6330716B2 (ja) * | 2015-04-16 | 2018-05-30 | コニカミノルタ株式会社 | トナーおよびその製造方法 |
| JP2018124379A (ja) * | 2017-01-31 | 2018-08-09 | 株式会社沖データ | 画像形成装置 |
| US11224511B2 (en) | 2017-04-18 | 2022-01-18 | Edwards Lifesciences Corporation | Heart valve sealing devices and delivery devices therefor |
| JP2021067882A (ja) * | 2019-10-25 | 2021-04-30 | ヒューレット−パッカード デベロップメント カンパニー エル.ピー.Hewlett‐Packard Development Company, L.P. | 非結晶性ポリエステル樹脂を用いたトナー粒子 |
| JP2023166698A (ja) * | 2022-05-10 | 2023-11-22 | ヒューレット-パッカード デベロップメント カンパニー エル.ピー. | ポリエチレンテレフタレート(pet)に基づく樹脂を含むトナー粒子 |
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- 2003-07-30 US US10/523,072 patent/US7485401B2/en not_active Expired - Fee Related
- 2003-07-30 AU AU2003252721A patent/AU2003252721A1/en not_active Abandoned
- 2003-07-30 WO PCT/JP2003/009628 patent/WO2004025372A1/ja not_active Ceased
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100507727C (zh) * | 2004-09-22 | 2009-07-01 | 佳能株式会社 | 调色剂 |
| AU2005203723B2 (en) * | 2004-11-18 | 2007-02-15 | Fujifilm Business Innovation Corp. | Electrostatic latent image developing toner and manufacturing method thereof |
| CN101977991B (zh) * | 2009-02-26 | 2013-02-06 | 谢科林股份公司 | 粉末组合物,特别是用于涂布金属基底的粉末组合物 |
Also Published As
| Publication number | Publication date |
|---|---|
| US20050245694A1 (en) | 2005-11-03 |
| EP1550915A4 (en) | 2009-04-22 |
| AU2003252721A1 (en) | 2004-04-30 |
| EP1550915B1 (en) | 2012-08-29 |
| US7485401B2 (en) | 2009-02-03 |
| EP1550915A1 (en) | 2005-07-06 |
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