[go: up one dir, main page]

WO2015137497A1 - Procédé d'enregistrement à jet d'encre - Google Patents

Procédé d'enregistrement à jet d'encre Download PDF

Info

Publication number
WO2015137497A1
WO2015137497A1 PCT/JP2015/057543 JP2015057543W WO2015137497A1 WO 2015137497 A1 WO2015137497 A1 WO 2015137497A1 JP 2015057543 W JP2015057543 W JP 2015057543W WO 2015137497 A1 WO2015137497 A1 WO 2015137497A1
Authority
WO
WIPO (PCT)
Prior art keywords
ink
drive
channel
surface tension
recording method
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2015/057543
Other languages
English (en)
Japanese (ja)
Inventor
森本　仁士
諒平 小林
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Konica Minolta Inc
Original Assignee
Konica Minolta Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Konica Minolta Inc filed Critical Konica Minolta Inc
Priority to JP2016507853A priority Critical patent/JP6406346B2/ja
Priority to EP15761762.2A priority patent/EP3118000B1/fr
Publication of WO2015137497A1 publication Critical patent/WO2015137497A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/015—Ink jet characterised by the jet generation process
    • B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
    • B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
    • B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
    • B41J2/04581—Control methods or devices therefor, e.g. driver circuits, control circuits controlling heads based on piezoelectric elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/015—Ink jet characterised by the jet generation process
    • B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
    • B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
    • B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
    • B41J2/04525—Control methods or devices therefor, e.g. driver circuits, control circuits reducing occurrence of cross talk
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/015—Ink jet characterised by the jet generation process
    • B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
    • B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
    • B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
    • B41J2/04573—Timing; Delays
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/015—Ink jet characterised by the jet generation process
    • B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
    • B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
    • B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
    • B41J2/04588—Control methods or devices therefor, e.g. driver circuits, control circuits using a specific waveform

Definitions

  • the present invention relates to an inkjet recording method.
  • an image is formed by a collection of ink droplets. For this reason, advanced control of the landing position of the droplet, uniformity of the size of the droplet, and the like are required.
  • the ink is sent from the ink chamber to the pressure chamber and ejected from the nozzle.
  • a phenomenon called crosstalk may occur.
  • Crosstalk is a phenomenon in which a pressure wave generated in a certain pressure chamber propagates to another pressure chamber when ink is ejected, and as a result, the speed (droplet volume) of the ejected droplet becomes unstable.
  • crosstalk affects the size of the droplets, streaks along the scanning direction of the inkjet head may be generated in the formed image. In particular, when ink is ejected in a large amount like a solid image, the streak tends to occur more easily.
  • the common ink chamber is divided between the pressure chamber rows by the separation wall to prevent the propagation of the pressure wave from the one pressure chamber row to the other pressure chamber row (for example, (Refer to Patent Document 1), or the volume elastic modulus of the wall portion of the common ink chamber facing the inlet of the pressure chamber is set to a predetermined value or less to attenuate the pressure wave propagated into the common ink chamber (for example, Patent Document 2).
  • Patent Documents 3 and 4 describe the influence of the surface tension of the ink on the image, but do not describe the relationship between the surface tension and crosstalk.
  • An ink jet recording method including a step of applying a drive signal for each drive group from a drive circuit of an ink jet recording apparatus and ejecting ink from a nozzle of the ink jet head for each drive group.
  • a common ink chamber for storing the ink, a head chip to which ink in the common ink chamber is supplied, and a nozzle for discharging the ink supplied to the head chip,
  • a plurality of straight cylindrical pressure chambers communicating with the nozzle and the common ink chamber, and a pressure applying portion for deforming the pressure chamber to pressurize the pressure chamber, wherein the pressure chamber is formed in the head chip.
  • each row of the pressure chambers belongs to the drive group different from the row of adjacent pressure chambers, and the drive chamber Circuit outputs the drive signal at the time difference M represented by the following formula for each different drive groups, the surface tension of the ink is less 45 mN / m, the ink jet recording method.
  • M nAL + t (In the above formula, M represents a time difference, n represents an integer of 1 or more, AL represents 1/2 of the acoustic resonance period of the pressure wave in the pressure chamber, and t represents “distance between nozzles between driving groups”.
  • the crosstalk is further reduced, the dot diameter after the ejected ink has landed on the recording medium is more uniformly controlled. Further, since the ink droplets spread after landing on the recording medium, the ink dots sufficiently overlap each other. Therefore, the generation of streaks along the scanning direction of the inkjet head in the solid image can be further reduced.
  • FIG. 3 is a partial rear view of the head chip shown in FIG. 2.
  • FIG. 3 is a partial cross-sectional view of the head chip shown in FIG. 2.
  • FIG. 6A is a diagram showing a state where the drive signal shown in FIG. 5 is not applied to a part of one channel row of the inkjet head
  • FIG. 6B is a view of a part of one channel row of the inkjet head.
  • FIG. 6 is a diagram showing a state in which the drive signal shown in FIG. 5 is applied. It is a figure which shows the state divided
  • FIG. 10A is a diagram showing an example of drive periods of drive signals of two drive groups in the inkjet head
  • FIG. 10B is an enlarged view of a portion B in FIG. 10A. It is a figure which shows the inkjet head which has four channel rows.
  • An ink jet recording method includes a step of applying a drive signal for each drive group from a drive circuit of an ink jet recording apparatus and discharging ink from a nozzle of an ink jet head for each drive group.
  • FIG. 1 is a diagram schematically showing an example of the configuration of an ink jet recording apparatus 100 used in the present embodiment.
  • the ink jet recording apparatus 100 includes a transport mechanism 200 for transporting the recording medium P, an ink jet head H disposed to face the recording surface PS of the recording medium P, and the ink jet head H.
  • the transport mechanism 200 includes a pair of transport rollers 201 for sandwiching the recording medium P, a transport motor 202, and a transport roller 203 that is rotationally driven by the transport motor 202.
  • the recording medium P is transported in the Y direction (sub-scanning direction) in FIG. 1 by the transport roller 201 and the transport roller 203.
  • the inkjet head H is mounted on the carriage 400.
  • the carriage 400 is even arranged so as to be able to reciprocate on the guide rail 300 spanned across the width direction of the recording medium P.
  • the guide rail 300 is disposed along a direction (X-X ′ direction (main scanning direction) in FIG. 1) substantially orthogonal to the conveyance direction (sub-scanning direction) of the recording medium P.
  • the drive device 500 is electrically connected to the inkjet head H via the FPC 4.
  • FIG. 2 is an exploded perspective view of the inkjet head H
  • FIG. 3 is a partial rear view of the head chip
  • FIG. 4 is a partial cross-sectional view of the head chip.
  • the inkjet head H has a so-called harmonica type head chip 1, a nozzle plate 2, a wiring board 3, an FPC 4, and an ink manifold 5.
  • the head chip 1 is an independent drive type head chip that performs recording by ejecting ink only from the drive channel 11.
  • the shape of the head chip 1 is a rectangular parallelepiped, and the head chip 1 has a plurality of through holes penetrating from one surface of the rectangular parallelepiped to the other surface.
  • the through holes are arranged in two rows on the head chip 1 in the planar direction.
  • the shape of the through hole is a straight cylinder, and the shape of the through hole in plan view is a rectangle.
  • “Straight cylindrical shape” refers to a shape in which the central axis is substantially linear and the distance from the central axis to the wall surface is substantially constant.
  • the cross-sectional shape of the through hole may be circular or non-circular.
  • the head chip 1 has two channel rows (A row and B row) in which a plurality of channels are arranged.
  • a row and B row in which a plurality of channels are arranged.
  • drive channels 11 that discharge ink as pressure chambers and dummy channels 12 that do not discharge ink are alternately arranged in the arrangement direction of the channels.
  • the drive channel arranged in one of the above two channel columns (also referred to as “A column”) is 11A, and the dummy channel arranged in the A column is 12A.
  • the drive channel arranged in the other of the two channel columns (also referred to as “B column”) is referred to as 11B, and the dummy channel arranged in the B column is referred to as 12B.
  • the drive channels (11A, 11B) and the dummy channels (12A, 12B) are alternately arranged in each channel row (A row or B row).
  • the partition wall 13 between the drive channel (11A, 11B) and the dummy channel (12A, 12B) adjacent to each other is composed of a piezoelectric element such as PZT.
  • the A-row partition walls may be referred to as 13A
  • the B-row partition walls may be referred to as 13B.
  • the head chip 1 is connected to the driving electrode 14 that is in close contact with the inner surface of each channel (11A, 11B, 12A, 12B) and the driving electrode 14, and is connected to the rear end surface 1c of the head chip 1. Electrodes 15A and 15B.
  • the connection electrode 15A extends from each of the channels A to one side edge of the rear end face 1c, and the connection electrode 15B extends from each of the channels B toward one side edge of the rear end face 1c.
  • each drive channel (11A, 11B) and each dummy channel (12A, 12B) are opened to the front end face 1a and the rear end face 1c of the head chip 1, respectively.
  • the nozzle plate 2 is bonded to the front end surface 1a of the head chip 1 with an adhesive.
  • the nozzle plate 2 has a plurality of nozzles 21 that open at positions corresponding to the drive channels 11A and 11B.
  • the opening shape of the nozzle 21 is, for example, a circle.
  • the wiring board 3 has a rectangular plan view shape larger than the head chip 1.
  • the wiring substrate 3 is bonded to the rear end surface 1c of the head chip 1 at a bonding region (region indicated by a one-dot chain line in FIG. 2) 31.
  • the wiring board 3 has through holes 32A and 32B and wiring electrodes 33A and 33B.
  • the through holes 32A and 32B correspond to the drive channels 11A and 11B that open to the rear end surface 1c of the head chip 1, respectively.
  • the wiring electrodes 33A and 33B are arranged on the surface of the wiring board 3 on the bonding region 31 side, and are alternately arranged in the arrangement direction.
  • the wiring electrode 33A is disposed at a position connected to the connection electrode 15A
  • the wiring electrode 33B is disposed at a position connected to the connection electrode 15B.
  • the wiring electrodes 33A and 33B are formed by, for example, vapor deposition or sputtering.
  • connection electrodes 15A and 15B of the head chip 1 and the wiring electrodes 33A and 33B of the wiring board 3 are electrically connected correspondingly. Further, when the wiring substrate 3 is bonded to the rear end surface 1 c of the head chip 1 in the bonding region 31, the dummy channels 12 ⁇ / b> A and 12 ⁇ / b> B are blocked by the wiring substrate 3.
  • the wiring substrate 3 and the head chip 1 are bonded with a predetermined pressing force (for example, 1 MPa or more) by an adhesive.
  • the adhesive used may be an anisotropic conductive adhesive containing conductive particles, but is preferably an adhesive containing no conductive particles in order to increase the reliability of prevention of short circuit.
  • the FPC 4 is bonded to one side edge of the surface of the wiring board 3 on the bonding region 31 side.
  • the wiring electrodes 33A and 33B of the wiring board 3 and the wiring of the FPC 4 are electrically connected correspondingly.
  • the ink manifold 5 is a bottomed container whose opening shape is rectangular, for example.
  • the internal space of the container communicates with the outside through the channels and the nozzles 21.
  • the internal space serves as a common ink chamber 51 to which ink is supplied.
  • the drive channels 11A and 11B communicate with each other via a common ink chamber 51.
  • [ink] Ink is supplied to and stored in the common ink chamber 51.
  • the surface tension of the ink is 45 mN / m or less. If the surface tension exceeds 45 mN / m, when a solid image is formed, stripes along the scanning direction of the inkjet head may occur in the solid image.
  • the surface tension of the ink is preferably 33 mN / m or less from the viewpoint of further improving the uniformity of the solid image.
  • the surface tension can be determined by a known method such as a ring method (Dunoi method) or a platinum plate method (Wilhelmy method) as described in, for example, JP-A-2004-115708.
  • the surface tension can be adjusted by, for example, the content of the surfactant in the ink.
  • the dynamic surface tension of the ink is a value of dynamic surface tension measured at a bubble generation period of 10 Hz using a bubble pressure method (maximum bubble pressure method) from the viewpoint of stable ejection performance in an inkjet head, and is 50 mN. / M or less, more preferably 45 mN / m or less.
  • Examples of other methods for measuring the dynamic surface tension include a meniscus method, a dropping method, a ⁇ / A curve method, a vibration jet method, and a curtain coater method as described in JP-A-2004-115708. It can be determined by a known method.
  • the dynamic surface tension can be adjusted by, for example, blending a surfactant or an organic solvent.
  • Examples of the ink include ink containing water, a water-soluble organic solvent, a surfactant, and a colorant.
  • the water may be ion exchange water.
  • the amount of water relative to the total mass of the ink is, for example, 20 to 60% by mass.
  • the water-soluble organic solvent may be one kind or more.
  • Examples of the water-soluble organic solvent include polyhydric alcohol, amine, monohydric alcohol, polyhydric alcohol alkyl ether, 2,2'-thiodiethanol, amide, heterocyclic compound, and acetonitrile.
  • polyhydric alcohol examples include ethylene glycol, glycerin, 2-ethyl-2- (hydroxymethyl) -1,3-propanediol, tetraethylene glycol, triethylene glycol, tripropylene glycol, 1,2,4- Butanetriol, diethylene glycol, propylene glycol, dipropylene glycol, butylene glycol, 1,6-hexanediol, 1,2-hexanediol, 1,5-pentanediol, 1,2-pentanediol, 2,2-dimethyl-1 , 3-propanediol, 2-methyl-2,4-pentanediol, 3-methyl-1,5-pentanediol, 3-methyl-1,3-butanediol and 2-methyl-1,3-propanediol included.
  • Examples of the amine include ethanolamine and 2- (dimethylamino) ethanol.
  • Examples of the monohydric alcohol include methanol, ethanol and butanol.
  • alkyl ether of the polyhydric alcohol examples include diethylene glycol monomethyl ether, diethylene glycol monobutyl ether, triethylene glycol monomethyl ether, triethylene glycol monobutyl ether, ethylene glycol monomethyl ether, ethylene glycol monobutyl ether, propylene glycol monomethyl ether, propylene glycol mono Butyl ether and dipropylene glycol monomethyl ether are included.
  • amide examples include N, N-dimethylformamide.
  • heterocyclic compound examples include 2-pyrrolidone.
  • the water-soluble organic solvent preferably has a surface tension (static surface tension) of 40 mN / m or less from the viewpoint of appropriately adjusting the surface tension of the ink.
  • examples of such water-soluble organic solvents include triethylene glycol monobutyl ether (36.2), propylene glycol (35.6), dipropylene glycol (32), dipropylene glycol monopropyl ether (27.6), And tripropylene glycol monomethyl ether (30.0).
  • the values in parentheses are the surface tension values (unit: mN / m).
  • water-soluble organic solvent having a large surface tension examples include ethylene glycol (48.4), diethylene glycol (48.5), triethylene glycol (45.2), 1,5-pentanediol ( 43.2), glycerin (63.0), and 2-pyrrolidone (47.0).
  • the amount of the water-soluble organic solvent with respect to the total mass of the ink is, for example, 10 to 60% by mass.
  • the surfactant may be any of cationic, anionic, amphoteric and nonionic surfactants.
  • the surfactant may be one kind or more.
  • cationic surfactant examples include aliphatic amine salts, aliphatic quaternary ammonium salts, benzalkonium salts, benzethonium chloride, pyridinium salts and imidazolinium salts.
  • anionic surfactant examples include fatty acid soap, N-acyl-N-methylglycine salt, N-acyl-N-methyl- ⁇ -alanine salt, N-acyl glutamate, alkyl ether carboxylate, Acylated peptides, alkyl sulfonates, alkyl benzene sulfonates, alkyl naphthalene sulfonates, dialkyl sulfosuccinates, alkyl sulfoacetates, ⁇ -olefin sulfonates, N-acyl methyl taurines, sulfated oils, higher grades Alcohol sulfate, secondary higher alcohol sulfate, alkyl ether sulfate, secondary higher alcohol ethoxy sulfate, polyoxyethylene alkylphenyl ether sulfate, monoglyculate, fatty acid alkylolamide sulfate, alkyl ether Phosphoric acid
  • amphoteric surfactant examples include carboxybetaine type, sulfobetaine type, aminocarboxylate, and imidazolinium betaine.
  • nonionic surfactant examples include polyoxyethylene alkyl ether, polyoxyethylene secondary alcohol ether, polyoxyethylene alkylphenyl ether (eg, Emulgen 911), polyoxyethylene sterol ether, polyoxyethylene lanolin derivative Polyoxyethylene polyoxypropylene alkyl ether (for example, New Pole PE-62), polyoxyethylene glycerin fatty acid ester, polyoxyethylene castor oil, hydrogenated castor oil, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene sorbitol fatty acid ester, Polyethylene glycol fatty acid ester, fatty acid monoglyceride, polyglycerin fatty acid ester, sorbitan fatty acid ester, propylene glycol fatty acid Ester, sucrose fatty acid esters, fatty acid alkanolamides, polyoxyethylene fatty acid amides, polyoxyethylene alkyl amines, alkyl amine oxides, include acetylene glycol and acetylene alcohol. “E
  • the surfactant is preferably a nonionic surfactant or an anionic surfactant.
  • the content of the surfactant in the ink can be appropriately determined from the viewpoint of improving the dispersibility of the colorant and adjusting the surface tension of the ink, and is, for example, 0.05 to 2% by mass.
  • the colorant may be one kind or more.
  • the colorant include water-soluble dyes, disperse dyes, pigments, reactive dyes, acid dyes and direct dyes.
  • the colorant for example, various colorants described in “Dyeing Note 21st Edition” (Color Dyeing Company) are used.
  • the water-soluble dye has an ionic water-soluble group in the molecule and is mixed in the ink in a dissolved state.
  • the above pigment is not dissolved in water but is mixed in the ink in a state of being dispersed as fine particles.
  • the above disperse dye is a nonionic dye having no ionic water-soluble group such as sulfonic acid or carboxy group, and has low solubility in water.
  • the disperse dye is blended in the ink in a state of being dispersed as fine particles.
  • the disperse dye is usually dispersed in the ink by a dispersant.
  • the disperse dye is soluble in an organic solvent such as acetone or dimethylformamide. Further, the disperse dye can be diffused and colored in a molecular form in the synthetic fiber. Inks containing disperse dyes are used for dyeing synthetic fibers, for example.
  • disperse dyes examples include C.I. I. Disperse Yellow 3, 4, 5, 7, 9, 13, 23, 24, 30, 33, 34, 42, 44, 49, 50, 51, 54, 56, 58, 60, 63, 64, 66, 68, 71, 74, 76, 79, 82, 83, 85, 86, 88, 90, 91, 93, 98, 99, 100, 104, 108, 114, 116, 118, 119, 122, 124, 126, 135, 140, 141, 149, 160, 162, 163, 164, 165, 179, 180, 182, 183, 184, 186, 192, 198, 199, 202, 204, 210, 211, 215, 216, 218, 224, 227, 231, 232; I.
  • Examples of the pigment include carbon black; C.I. I. Pigment Yellow 1, 3, 12, 13, 14, 16, 17, 43, 55, 74, 81, 83, 109, 110, 128; C.I. I. Pigment Orange 13, 16, 34, 43; C.I. I. Pigment Red 2, 5, 8, 12, 17, 22, 23, 41, 112, 114, 122, 123, 146, 148, 150, 166, 170, 220, 238, 245, 258; I. Pigment Violet 19, 23; C.I. I. Pigment Blue 15, 15: 1, 15: 3, 15: 5, 29; C.I. I. Pigment Green 7, 8; C.I. I. Pigment Brown 22; C.I. I. Pigment Black 1, 7; and C.I. I. Pigment White 6; is included.
  • Examples of the reactive dye include C.I. I. Reactive Yellow 2, 3, 7, 15, 17, 18, 22, 23, 24, 25, 27, 37, 39, 42, 57, 69, 76, 81, 84, 85, 86, 87, 92, 95, 102, 105, 111, 125, 135, 136, 137, 142, 143, 145, 151, 160, 161, 165, 167, 168, 175, 176, C.I. I. Reactive Orange 1, 4, 5, 7, 11, 12, 13, 15, 16, 20, 30, 35, 56, 64, 67, 69, 70, 72, 74, 82, 84, 86, 87, 91, 92, 93, 95, 107; C.I. I.
  • Reactive Red 2, 3, 3 1, 5, 8, 11, 21, 22, 23, 24, 28, 29, 31, 33, 35, 43, 45, 49, 55, 56, 58, 65, 66, 78, 83, 84, 106, 111, 112, 113, 114, 116, 120, 123, 124, 128, 130, 136, 141, 147, 158, 159, 171, 174, 180, 183, 184, 187, 190, 193, 194, 195, 198, 218, 220, 222, 223, 228, 235; I. Reactive Violet 1, 2, 4, 5, 6, 22, 23, 33, 36, 38; I.
  • Examples of the acid dye include C.I. I. Acid Yellow 1, 3, 11, 17, 18, 19, 23, 25, 36, 38, 40, 40: 1, 42, 44, 49, 59, 59: 1, 61, 65, 67, 72, 73, 79, 99, 104, 159, 169, 176, 184, 193, 200, 204, 207, 215, 219219: 1, 220, 230, 232, 235, 241, 242, 246; I.
  • Examples of direct dyes include C.I. I. Direct Yellow 8, 9, 10, 11, 12, 22, 27, 28, 39, 44, 50, 58, 86, 87, 98, 105, 106, 130, 137, 142, 147, 153; C.I. I. Direct Orange 6, 26, 27, 34, 39, 40, 46, 102, 105, 107, 118; C.I. I. Direct Red; 2, 4, 9, 23, 24, 31, 54, 62, 69, 79, 80, 81, 83, 84, 89, 95, 212, 224, 225, 226, 227, 239, 242, 243 254; C.I. I. Direct Violet 9, 35, 51, 66, 94, 95; C.I. I.
  • the content of the colorant in the ink is preferably 0.1 to 20% by mass, and more preferably 0.2 to 13% by mass.
  • the average particle size of the pigment or the disperse dye is 300 nm or less, or the maximum particle size of the pigment or the disperse dye is 900 nm or less. If the average particle size or the maximum particle size exceeds the above range, clogging is likely to occur in an ink jet printing method in which the fine nozzles emit light, and stable ink ejection may not be possible for a long period of time.
  • the average particle size or the maximum particle size can be measured using a commercially available particle size measuring device using a light scattering method, an electrophoresis method, a laser Doppler method, or the like, for example, Zeta Sizer 1000 manufactured by Malvern.
  • the average particle size or maximum particle size can be adjusted by dispersing the pigment or disperse dye with a bead mill using a commercially available dispersant, classification of the pigment or disperse dye, mixing of classified products, and the like. Is possible.
  • the ink may further contain other components as long as its surface tension is 45 mN / m or less.
  • the ink may contain an inorganic salt in order to keep its viscosity and dye stable or to improve color development.
  • the inorganic salt include sodium chloride, sodium sulfate, magnesium chloride and magnesium sulfide.
  • the ink may contain a preservative or an antifungal agent in order to maintain the long-term storage stability of the ink.
  • preservatives or antifungal agents include aromatic halogen compounds (eg, Preventol (preventol) CMK), methylene dithiocyanate, halogenated nitrogen sulfur compounds, and 1,2-benzisothiazolin-3-one (eg, , PROXEL (Proxel) GXL).
  • aromatic halogen compounds eg, Preventol (preventol) CMK
  • methylene dithiocyanate methylene dithiocyanate
  • halogenated nitrogen sulfur compounds eg, , PROXEL (Proxel) GXL
  • PROXEL Proxel
  • Arch Corporation is a registered trademark of Arch Corporation.
  • FIG. 5 shows an example of a drive signal given to the inkjet head H.
  • the drive signal is a pulse for ejecting ink from the nozzle 21 of the inkjet head H.
  • the drive signal is a rectangular wave composed of a positive voltage (+ V) having a pulse width PW, and generates a negative pressure in the channel.
  • the pulse is a rectangular wave having a constant voltage peak value.
  • the pulse width PW is the timing when the voltage peak value rises from 0V to 10% and the voltage peak value falls to 10% when 0V is 0% and the voltage peak value voltage is 100%.
  • the rectangular wave means that both the time until the voltage rises from 10% to 90% of the voltage peak value and the time until the voltage falls from the voltage peak value 90% to 10% are AL. Is a waveform that is within 1/2, preferably within 1/4.
  • FIGS. 6A and 6B The ink ejection operation of the inkjet head H by the drive signal will be described with reference to FIGS. 6A and 6B.
  • 6A is a diagram illustrating a state in which the drive signal illustrated in FIG. 5 is not applied to a part of one channel row of the inkjet head H
  • FIG. FIG. 6 is a diagram showing a state in which the drive signal shown in FIG. 5 is applied.
  • the ink pressure in the drive channel 11 is changed from “negative to positive” and “positive to negative” by the deformation of the partition wall 13 as described above. And changes every cycle.
  • the duration (pulse width PW) of the drive signal is represented by AL (Acoustic Length).
  • the AL refers to 1 ⁇ 2 of the acoustic resonance period of the pressure wave in the drive channel 11.
  • the pulse width PW of the drive signal is set to a time difference (1AL) between the timing at which the pressure in the drive channel 11 changes from “negative to positive” and the timing at which the pressure changes from “positive to negative”. It is preferable to approximate it, and specifically, it is preferable to set it in the range of 0.8 AL or more and 1.2 AL or less.
  • AL measures the velocity of a droplet discharged when a rectangular wave driving signal is applied to the driving electrode 14 and changes the rectangular wave pulse width PW while keeping the rectangular wave voltage value constant. It is obtained as a pulse width that maximizes the flying speed of the droplet.
  • the drive device 500 divides all the channel rows of the inkjet head H into N (N is an integer of 2 or more) drive groups and drives each independently. Adjacent channel rows belong to different drive groups.
  • FIG. 7 is a diagram showing a state in which the inkjet head H is divided into two drive groups for each of two channel rows.
  • N is “2”
  • the two channel rows of the inkjet head H are, for example, as shown in FIG. 7, the A row channel row is the drive group A (DG-A) and the B row channel is The columns belong to drive group B (DG-B). That is, all the channel rows of the inkjet head H are divided into two drive groups.
  • a drive signal from the drive device 500 is applied to the drive channels in the channel row belonging to one drive group at the same timing within the drive cycle T of the inkjet head H. That is, the same drive signal is simultaneously applied to all the drive channels 11 of the channels belonging to the same drive group.
  • Each drive channel 11 and each dummy channel 12 included in one channel row are necessarily included in the same drive group.
  • D is “inter-nozzle distance between drive groups”, which is a distance between adjacent different drive groups.
  • the “distance between nozzles between drive groups” is indicated by D as shown in FIG.
  • the driving device 500 outputs a driving signal with a time difference M expressed by the following equation for each different driving group.
  • M represents a time difference
  • n represents an arbitrary integer of 1 or more
  • AL represents 1/2 of the acoustic resonance period of the pressure wave in the pressure chamber
  • t represents “between nozzles between driving groups”. It represents a pressure wave transmission time obtained by “distance” / “speed at which sound travels through ink”.
  • M nAL + t
  • FIG. 8 is a diagram showing drive signals applied to two different drive groups A and B.
  • the drive device 500 applies the drive signal to the drive group B later by the time difference M than the drive signal to the drive group A.
  • there is a time difference of “nAL + t” hereinafter also referred to as “phase difference”).
  • a drive signal is applied to the drive group A at a drive cycle T.
  • Drive group A is always driven ahead of drive group B by time difference M.
  • the drive channel 11 A of the drive group A and the drive channel 11 B of the drive group B communicate with each other via the common ink chamber 51. Therefore, when a drive signal is applied to the drive electrode 14 of the drive channel 11A of the drive group A and the drive electrode 14 of the drive channel 11B of the drive group B to discharge the droplets, the droplets are affected by the influence of crosstalk. The speed may vary greatly.
  • the present inventors drive the inkjet head H so that droplets are ejected from the drive channel 11A of the drive group A, and then droplets are ejected from the drive channel 11B of the drive group B after a predetermined time lag.
  • the droplet velocity discharged from the drive channel 11B of the drive group B is periodically changed as follows according to the predetermined time lag with respect to the droplet velocity discharged from the drive channel 11A of the drive group A. It was found by experiments that it fluctuates.
  • FIG. 9 is a diagram showing fluctuations in the droplet velocity of the two drive groups in the inkjet head H.
  • the speed (droplet speed) of the droplets ejected from the drive channel 11B increases or decreases every 1 AL after a certain “time lag” from the time of droplet ejection in the drive group A. Repeat inversion. At the time of this reversal, the droplet velocity of the drive group B becomes substantially the same as the velocity (droplet velocity) of the droplet from the drive channel 11A of the drive group A.
  • the “time lag” from when the droplets of the drive group A are discharged corresponds to the “time t” described above. That is, the droplet velocity from the drive channel 11B of the drive group B after the lapse of nAL + t from the time of droplet discharge from the drive channel 11A of the drive group A is substantially equal to the droplet velocity from the drive channel 11A of the drive group A. It turns out that it becomes the same speed.
  • the main structure of the inkjet head H is not changed at all.
  • the influence of crosstalk between the drive group A and the drive group B sharing the common ink chamber 51 can be substantially eliminated. That is, it is possible to suppress fluctuations in the droplet velocity between the channel rows.
  • the drive load is also suppressed.
  • n may be an integer of 1 or more.
  • a drive signal for ejection from a drive group to be driven later does not overlap the next drive cycle T.
  • FIG. 10A is a diagram illustrating an example of a drive period of drive signals of drive groups A and B in the inkjet head H
  • FIG. 10B is an enlarged view of a portion B in FIG. 10A.
  • the nozzles 21 in the first row start ejecting ink at a certain physical position in the recording medium P.
  • the recording medium P and the inkjet head H move relatively, and the nozzles 21 in the second row (drive group B) reach the physical position.
  • the time from the start of ejection in the first row to the arrival in the second row is the landing position adjustment period (P1).
  • the nozzles 21 in the second row start ejecting ink (P2).
  • both drive groups are driven together.
  • each drive channel 11 discharges at the same drive timing
  • the ink discharge timing in each drive channel is the same, and only the start time and end time differ for each channel row.
  • the inkjet head H applies the drive signal to the drive group B after the time lag described above from the application of the drive signal to the drive group A. That is, the phase difference nAL + t is given to the application timing of the drive signal between the different drive groups A and B during the period in which the two drive groups are driven together. Thereby, the timing itself at which the droplets are ejected is different.
  • the phase difference nAL + t between the drive groups described above includes the difference between the start time and the end time (the landing position adjustment period between the drive groups) due to the landing position adjustment due to the difference in the physical nozzle position between the drive groups. Not mean the above time lag.
  • phase difference nAL + t is given between the drive group A and the drive group B, strictly speaking, it may be necessary to adjust the landing position of the droplet between the drive group A and the drive group B. .
  • this problem can be solved by adjusting the relative moving speed of the recording medium P and the inkjet head H.
  • a plurality of channel columns may belong to one drive group.
  • the channel row of the ink jet head in the present embodiment may be a plurality of rows. For example, it is possible to divide a plurality of channel rows into N drive groups (N is an integer of 2 or more) and drive the inkjet head in the same manner as described above.
  • FIG. 11 is a diagram showing an inkjet head having four channel rows.
  • the ink jet head has four channel rows as shown in FIG.
  • the four channel rows are divided into two drive groups (drive group B with drive group A). Adjacent channel columns belong to different drive groups, and drive groups A and drive groups B are alternately arranged in a direction orthogonal to the channel arrangement direction.
  • D ′ in FIG. 11 is the distance between the drive group sets, and is represented by the distance between the centers of the nozzles in the adjacent channel rows of the adjacent sets. It is preferable that D 'is equal to D or large enough to sufficiently attenuate the pressure wave. D is the “distance between nozzles between drive groups” described above.
  • FIG. 12 is a diagram showing drive signals applied to two different drive groups A and B in the inkjet head shown in FIG.
  • the inkjet head may include three drive groups.
  • FIG. 13 is a diagram showing an inkjet head having six channel rows
  • FIG. 14 is a diagram showing drive signals applied to three different drive groups A, B, and C in the inkjet head shown in FIG. It is.
  • the inkjet head shown in FIG. 13 has six channel rows.
  • the six channel columns are divided into two drive group sets, and each drive group set is divided into three drive groups (drive group A, drive group B, and drive group C (DG-C)). is doing.
  • adjacent channel rows are arranged in the order of drive groups A, B, C, A, B, and C in a direction orthogonal to the channel arrangement direction so as to belong to different drive groups. .
  • D and D 'in FIG. 13 are both as described for the ink jet head of FIG.
  • n in the phase difference nAL + t between the drive groups is, for example, n of the phase difference between the drive groups A and B and the phase difference between the drive groups B and C. n may be changed, but it is preferable to set all to the same value from the viewpoint of avoiding a decrease in printing speed.
  • the drive groups of adjacent channel columns are different from each other. This is because, if a channel row belonging to a different drive group is arranged between channel rows belonging to the same drive group, the separation distance of the same drive group becomes large, so the influence of crosstalk between the same drive groups This is because of a further reduction.
  • the driving device 500 may have two or more driving circuits. That is, all the channel rows of the inkjet head H may not be driven by a common driving circuit in the driving device 500.
  • Each of the two or more drive circuits of the drive device 500 may drive the channel column for each drive group or for each drive group set, but the channel columns driven by one drive circuit are different from each other. It is preferable to belong to a group (one drive circuit drives a channel row for each drive group set).
  • FIG. 15 is a diagram illustrating a mode in which the driving apparatus 500 includes two driving circuits 501 and 502 for driving two driving group sets each including two different driving groups.
  • the inkjet head H has four channel rows. Two adjacent channel columns constitute a drive group set, and two adjacent channel columns in the set belong to drive groups A and B, respectively.
  • the drive device 500 includes two drive circuits 501 and 502.
  • the drive circuit 501 is connected to each of the channel columns of one drive group set, and the drive circuit 502 is connected to the other drive group set. Connected to each of the channel trains.
  • the above aspect is more preferable from the viewpoint of reducing a drop in droplet velocity. This is because the load on the drive circuit is reduced by reducing the number of drive channels simultaneously driven by one drive circuit, and the waveform dullness of the drive signal can be reduced.
  • the inkjet head H scans and moves the recording surface PS of the recording medium P in the X-X ′ direction in the drawing as the carriage 400 moves in the main scanning direction.
  • a desired image is recorded by discharging droplets from the nozzles during the scanning and moving process.
  • the drive signal is a rectangular wave composed of a positive voltage (+ V) with a pulse width PW. As long as it can be done, it can be determined appropriately.
  • the head chip 1 of the inkjet head H is a so-called “harmonic type head chip” having a hexagonal shape arranged on the end faces where the inlet and outlet of the channel are opposite to each other.
  • the entrances of the drive channels 11 of all the channel rows are arranged on the rear end surface 1 c, and the common ink chamber 51 is arranged on the entrance side of the drive channels 11.
  • the configuration of the present embodiment is a preferable aspect because a remarkable effect is easily obtained.
  • the structure of the head chip can be appropriately adopted in a range in which the pressure chambers between the plurality of pressure chambers communicate with each other through the common ink chamber.
  • the inkjet head H discharges droplets while scanning in the width direction (main scanning direction) of the recording medium P.
  • the inkjet head H is a linear inkjet fixed in the width direction of the recording medium P. It may be a head.
  • printing can be performed by discharging droplets from the nozzles of the ink jet head while moving the recording medium P along the Y direction in FIG.
  • the channel row of the inkjet head is arranged along the X-X ′ direction in FIG. 1.
  • the ink jet recording method applies two or more drive signals for each drive group from the drive circuit of the ink jet recording apparatus, and ejects ink from the nozzles of the ink jet head for each drive group. To do.
  • the recording medium P can be appropriately determined as long as an image can be formed by inkjet.
  • the ink jet recording method according to the present embodiment can be used for textile printing (ink jet textile printing).
  • the recording medium P may be various fibers such as polyester, cotton, silk, hair, and nylon.
  • the recording medium P may be a fabric made of the fibers. Examples of the fabric include woven fabric, knitted fabric, and nonwoven fabric.
  • the fibers constituting the fabric are preferably composed only of fibers that can be dyed with disperse dyes.
  • the fabric includes the fibers described above, rayon, cotton, polyurethane, acrylic, nylon, wool, silk, and the like. It may be a blended woven fabric or a blended nonwoven fabric.
  • the thickness of the yarn constituting the fabric is preferably 10 to 100 d, for example.
  • the fabric When the fabric is a fabric that is dyed by a high-temperature steaming method, the fabric preferably further contains a dyeing aid.
  • the dyeing assistant has a function of making a eutectic mixture with water condensed in the cloth when the cloth to be printed is steamed, suppressing the amount of water re-evaporated, and shortening the temperature rising time.
  • the eutectic mixture has an action of dissolving the dye on the fiber and promoting diffusion of the dye into the fiber.
  • the dyeing assistant include urea.
  • the inkjet recording method may further include other steps than the above-described steps as long as the effects of the present embodiment are exhibited.
  • the pretreatment step is a step of applying a pretreatment agent for preventing bleeding to the fabric.
  • a pretreatment agent for preventing bleeding to the fabric.
  • various methods such as a pad method, a coating method, and a spray method can be used.
  • a method suitable for fibers and inks may be selected as appropriate from known methods such as treating water-soluble polymer with fibers.
  • the above-mentioned printing method is applied to a fiber provided with 0.2 to 50% by mass of at least one substance selected from the group consisting of a water-soluble metal salt, a polycation compound, a water-soluble polymer, a surfactant and a water repellent. Is preferable because it is possible to prevent bleeding at a high level and print a high-definition image on a fabric.
  • a method for constructing such fibers is preferably selected for the pretreatment step.
  • water-soluble polymer examples include starches derived from corn, wheat, etc .; cellulose derivatives such as carboxymethylcellulose, methylcellulose, hydroxyethylcellulose, and the like; Saccharides; protein substances such as gelatin, casein and keratin; and synthetic water-soluble polymers such as polyvinyl alcohol, polyvinyl pyrrolidone and acrylic acid polymers.
  • surfactant examples include anionic, cationic, amphoteric and nonionic ones.
  • surfactants typically include higher alcohol sulfates as anionic surfactants, sulfonates of naphthalene derivatives, etc .; quaternary ammonium salts as cationic surfactants, etc.
  • Imidazoline derivatives as amphoteric surfactants; polyoxyethylene alkyl ethers, polyoxyethylene propylene block polymers, sorbitan fatty acid esters, polyoxyethylene sorbitan fatty acid esters, ethylene oxide adducts of acetylene alcohol as nonionic surfactants Etc. are included.
  • the color development step is a step of adsorbing or fixing the dye in the ink that has only adhered to the fabric surface after printing and is not sufficiently adsorbed or fixed to the fabric to the fabric.
  • the coloring process By the coloring process, the original hue of the ink is more clearly expressed.
  • Steaming by steam, baking by dry heat, thermosol, HT steamer by superheated steam, HP steamer by pressurized steam, and the like are used in the coloring process.
  • the specific method of the coloring process is appropriately selected depending on the material to be printed, ink, and the like.
  • the printed fabric may be immediately heat-treated or may be heat-treated after a while, and may be dried and colored in accordance with the application.
  • the above washing step is preferable from the viewpoint of preventing the dye that was not involved in the dyeing from remaining.
  • the washing step further suppresses a decrease in color stability and a decrease in dyeing fastness.
  • the washing step is also preferable from the viewpoint of removing the pretreatment product applied to the fabric from the fabric. By removing the pre-treatment product, the discoloration of the fabric is further suppressed.
  • the cleaning process can be appropriately performed depending on the object to be removed, the purpose, and the like.
  • the washing step is generally a step of treating the fiber or fabric with a mixed solution of caustic soda, a surfactant, and hydrosulfite. It may be a continuous process such as an open soaper or a batch process using a liquid dyeing machine.
  • the printed matter is dried or dried with a dryer, heat roll, iron or the like.
  • the size of the droplets becomes uniform, the dot diameter after landing of the ink is controlled, and the spread of the landed dots is sufficient. Overlap between dots is expressed. For this reason, a uniform solid image without streaking can be formed even with a lower recording density. Therefore, it is possible to further increase the speed of inkjet image formation.
  • the ink jet recording method applies a drive signal for each drive group from the drive circuit of the ink jet recording apparatus and ejects ink from the nozzles of the ink jet head for each drive group.
  • the process of carrying out is included.
  • the inkjet head includes a common ink chamber for containing ink, a head chip to which ink in the common ink chamber is supplied, and a nozzle for discharging the ink supplied to the head chip.
  • the head chip includes a plurality of straight cylindrical pressure chambers that communicate with the nozzles and the common ink chamber, and a pressure applying unit that deforms the pressure chamber to pressurize the pressure chamber.
  • the pressure chambers are arranged in two or more rows in the head chip, each row of the pressure chambers belongs to the drive group different from the row of adjacent pressure chambers, and the drive circuit is provided for each different drive group.
  • the drive signal is output at a time difference M expressed by the following equation, and the surface tension of the ink is 45 mN / m or less. Therefore, the generation of streaks along the scanning direction of the inkjet head in the solid image can be further reduced.
  • M nAL + t
  • M represents a time difference
  • n an integer of 1 or more
  • AL represents 1/2 of the acoustic resonance period of the pressure wave in the pressure chamber
  • t represents “distance between nozzles between driving groups”. / Represents the pressure wave transmission time required by “speed at which sound travels through ink”.
  • the ink contains a surfactant, and the content of the surfactant in the ink is 0.05 to 2% by mass, from the viewpoint of improving the dispersibility of the colorant, and From the viewpoint of optimizing the surface tension of the ink, it is even more effective.
  • the ink contains a water-soluble organic solvent having a surface tension of 40 mN / m or less from the viewpoint of easily adjusting the surface tension of the ink to an appropriate range. More effective.
  • the dynamic surface tension when the bubble generation period of the ink is 10 mHz or less is 50 mN / m or less, so that wettability is expressed in a short time after the droplets land, This is even more effective from the viewpoint of expanding the droplet in the radial direction.
  • Dispersions 1 and 2 After sequentially mixing the following components, the obtained mixture was dispersed using a sand grinder to prepare dispersions 1 and 2, respectively. In either case, the colorant (carbon black or CIDB 60) was dispersed using a Malvern particle size measuring device S90 until the average particle size became 190 nm.
  • “Printex35” manufactured by Degussa Co., Ltd. was used as the carbon black of dispersion 1.
  • Printex is a registered trademark of Evonik Carbon Black.
  • CIDB 60” of dispersion 2 is “CI Disperse Blue 60”.
  • “Vanilex RN” manufactured by Nippon Paper Industries Co., Ltd. was used as the sodium lignin sulfonate of dispersions 1 and 2.
  • “Vanilex” is a registered trademark of the company.
  • the “remaining amount” of ion-exchanged water is an amount required to finish the total amount of each dispersion to 100 parts by mass.
  • “Glycerin” and “ethylene glycol” are both manufactured by Kanto Chemical Co., Ltd., and “Proxel GXL (S)” is a preservative manufactured by Arch Chemicals. “Proxel” is a registered trademark of Arch Corporation.
  • the “appropriate amount” of glycerin is such an amount that the viscosity of the ink A1 becomes 5.7 mPa seconds.
  • the viscosity of the ink A1 was adjusted by preparing two types of inks A1 that differ only in the amount of glycerin added and mixing them appropriately.
  • the “remaining amount” of ion-exchanged water is an amount necessary to make the total amount of ink A1 100 parts by mass.
  • the ink A1 is passed through a gas-permeable hollow fiber membrane (Mitsubishi Rayon Co., Ltd.), and the outer surface of the hollow fiber membrane is decompressed with a water aspirator to remove dissolved gas in the ink A1 (degassing )did. Moreover, the ink A1 after deaeration was filled in a vacuum pack to prevent air from entering the ink A1.
  • a gas-permeable hollow fiber membrane Mitsubishi Rayon Co., Ltd.
  • the static surface tension of the ink A1 was measured by a platinum plate method at an ink temperature of 25 ° C. using a surface tension meter (manufactured by Kyowa Interface Science Co., Ltd .: CBVP-Z).
  • the dynamic surface tension of the ink A1 was determined as the surface tension value when the ink temperature was 25 ° C. and the bubble generation period was 10 Hz using a dynamic surface tension meter (“Sensor Dyne 6000” manufactured by Chem Dyne Research). Asked.
  • the viscosity of the ink A1 was measured using an E-type viscometer (manufactured by Toki Sangyo Co., Ltd.).
  • the static surface tension STs of the ink A1 was 50 mN / m
  • the dynamic surface tension STd was 55 mN / m.
  • inks A2 to A5 were prepared in the same manner as ink A1 except that the compositions shown in Table 1 were used, and the static surface tension and dynamic surface tension were measured.
  • Table 1 “Orphine E1010” (OE1010) is a surfactant manufactured by Nissin Chemical Industry Co., Ltd., and “Dipropylene glycol monomethyl ether” (DPGMM) is “DPnP” manufactured by Dow. Table 1 shows the compositions and surface tension values of the inks A1 to A5.
  • inks B1 to B4 were prepared in the same manner as ink A1, except that the composition was changed as described in Table 2 below and the viscosity of the ink was adjusted to 5.7 mPa seconds by the amount of glycerin added. The static surface tension and the dynamic surface tension were measured respectively.
  • “KF-351A” is a polyether-modified silicone surfactant manufactured by Shin-Etsu Chemical Co., Ltd. Table 2 shows the compositions and surface tension values of the inks B1 to B4.
  • inks C1 to C12 were prepared in the same manner as ink A1, except that the composition was changed as described in Table 3 below and the viscosity of the ink was adjusted to 5.7 mPa seconds by the amount of glycerin added. The static surface tension and the dynamic surface tension were measured respectively.
  • DPGMP water-soluble organic solvents having a surface tension of 40 mN / m or less.
  • DPGMP is dipropylene glycol monopropyl ether
  • TEGMB is triethylene glycol monobutyl ether
  • PG is propylene glycol
  • TGMM is tripropylene glycol monomethyl ether.
  • Table 3 shows the compositions and surface tension values of the inks C1 to C12.
  • Examples 1 to 3 and Comparative Examples 1 and 2 An A4 size solid image having a printing resolution of 540 dpi ⁇ 720 dpi was printed on an inkjet medium (recording medium) using an inkjet recording apparatus as shown in FIG.
  • the ink jet head of the ink jet recording apparatus has four channel rows as shown in FIG. All the channel rows are divided into two drive groups A and B so that the drive groups are different between adjacent channel rows. Each channel row has 256 nozzles, and the inter-nozzle distance D between adjacent channel rows serving as drive groups is 0.846 mm. AL is 5.0 ⁇ s.
  • the drive device that outputs the drive signal is a device that is common to all the channel rows, and the drive signal is applied from the drive device to all the channel rows.
  • the drive signal is a rectangular wave consisting only of a positive voltage (+ V) as shown in FIG.
  • Table 4 shows the types and evaluation results of the inks used in Examples 1 to 3 and Comparative Examples 1 and 2. (Evaluation criteria) A: No streak is observed in any recording medium B: Streaks are barely recognized in Pictoricopro white film C: Streaks are barely recognized in photographic paper Crispier D: Streaks are conspicuous in photographic paper Crispier
  • Examples 4 to 7 and Comparative Examples 8 and 9 A solid image was formed in the same manner as in Example 1 except that each of ink A1 and inks B1 to B4 was used, the printing resolution was 540 dpi ⁇ 540 dpi, and only “Pictricopro White Film” (A4) was used as the recording medium. did. Then, the number of streaks generated in one solid image was counted. Further, the nozzle was left for 5 minutes without a cap, after which an A4 solid image was formed, and the number of missing nozzles after the solid image was printed was counted.
  • the “missing nozzle” refers to a nozzle in which ink is no longer ejected from the nozzle, and can be counted by a clear streak generated in the image. A streak caused by a missing nozzle is different from a streak generated by crosstalk, and a white streak of 20 microns or more is generated. Further, “t” in the inks B1 to B4 was determined in the same manner as in the inks A1 to A5. As a result, the t was 0.5 ⁇ sec, and nAL + t when using the ink was 5.5 ⁇ sec. Table 5 shows the types of inks used in Examples 4 to 7 and Comparative Examples 8 and 9, and the evaluation results.
  • Examples 8 to 17 and Comparative Examples 10 to 13 A solid image was formed in the same manner as in Example 4 except that the inks C1 to C12 were used, and the number of streaks in the solid image was counted. Further, “t” in the inks C1 to C12 was determined in the same manner as in the inks A1 to A5. As a result, the t was 0.5 ⁇ sec, and nAL + t when using the ink was 5.5 ⁇ sec. Table 6 shows the types of ink used in Examples 8 to 17 and Comparative Examples 10 to 13 and the evaluation results.
  • inks (C5 to C12) containing a water-soluble organic solvent having a surface tension of 40 mN / m or less are water-soluble organic solvents having a surface tension of more than 40 mN / m. It can be seen that the generation of streak unevenness can be further suppressed as compared with the inks (C3, C4) containing the.
  • the present invention can substantially prevent adverse effects of crosstalk on ink ejection in an ink jet recording method in which pressure chambers communicating with each other in an ink chamber are arranged in parallel and a drive signal is applied to each column. .
  • the present invention is expected to contribute to further development of a higher speed and higher definition ink jet recording method.

Landscapes

  • Particle Formation And Scattering Control In Inkjet Printers (AREA)
  • Ink Jet (AREA)
  • Ink Jet Recording Methods And Recording Media Thereof (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)

Abstract

L'invention concerne un procédé d'enregistrement à jet d'encre dans lequel une pluralité de canaux communiquant avec une chambre d'encre commune, est disposée en juxtaposition, un signal d'entraînement est appliqué à chaque rangée de canaux suivant un déphasage de nAL+t, et une encre dont la surface de tension est inférieure ou égale à 45mN/m, est mise en œuvre. n représente un nombre entier supérieur ou égal à 1, AL représente ½ d'un cycle de résonance acoustique d'une onde de pression au niveaux desdits canaux, et t représente le temps de transmission de l'onde de pression obtenu avec (distance de buse à buse entre des groupes d'entraînement) / (vitesse de propagation du son dans l'encre).
PCT/JP2015/057543 2014-03-14 2015-03-13 Procédé d'enregistrement à jet d'encre Ceased WO2015137497A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2016507853A JP6406346B2 (ja) 2014-03-14 2015-03-13 インクジェット記録方法
EP15761762.2A EP3118000B1 (fr) 2014-03-14 2015-03-13 Procédé d'enregistrement à jet d'encre

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2014052319 2014-03-14
JP2014-052319 2014-03-14

Publications (1)

Publication Number Publication Date
WO2015137497A1 true WO2015137497A1 (fr) 2015-09-17

Family

ID=54071933

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2015/057543 Ceased WO2015137497A1 (fr) 2014-03-14 2015-03-13 Procédé d'enregistrement à jet d'encre

Country Status (4)

Country Link
EP (1) EP3118000B1 (fr)
JP (1) JP6406346B2 (fr)
PT (1) PT3118000T (fr)
WO (1) WO2015137497A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019107860A (ja) * 2017-12-20 2019-07-04 エスアイアイ・プリンテック株式会社 液体噴射ヘッド、液体噴射記録装置、液体噴射ヘッドの駆動方法および液体噴射ヘッドの駆動プログラム
JP2019119146A (ja) * 2018-01-09 2019-07-22 セイコーエプソン株式会社 印刷装置及び媒体の加熱方法
JP2020025916A (ja) * 2018-08-10 2020-02-20 東芝テック株式会社 薬液吐出装置
JP2022061262A (ja) * 2020-10-06 2022-04-18 コニカミノルタ株式会社 捺染用インクジェットインク、捺染用インクジェットインクセット、および画像形成方法
JP2023005600A (ja) * 2021-06-29 2023-01-18 理想科学工業株式会社 捺染物の製造方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009031390A (ja) * 2007-07-25 2009-02-12 Seiko Epson Corp 液状体の吐出方法、カラーフィルタの製造方法、有機ｅｌ素子の製造方法
JP2010069818A (ja) * 2008-09-22 2010-04-02 Konica Minolta Ij Technologies Inc 液体吐出装置
JP2013188975A (ja) * 2012-03-14 2013-09-26 Konica Minolta Inc インクジェット記録装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4543847B2 (ja) * 2004-09-14 2010-09-15 ブラザー工業株式会社 ライン式インクジェットプリンタ
JP4866457B2 (ja) * 2009-09-15 2012-02-01 東芝テック株式会社 インクジェット記録装置、クロストーク低減方法
US8328309B2 (en) * 2010-06-01 2012-12-11 Kabushiki Kaisha Toshiba Ink jet head and method of driving the same
JP2012196902A (ja) * 2011-03-22 2012-10-18 Seiko Epson Corp 液体噴射装置
JP6202002B2 (ja) * 2012-10-02 2017-09-27 コニカミノルタ株式会社 インクジェットヘッドの駆動方法、インクジェットヘッドの駆動装置及びインクジェット記録装置
JP6341206B2 (ja) * 2013-08-22 2018-06-13 コニカミノルタ株式会社 インクジェット染色方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009031390A (ja) * 2007-07-25 2009-02-12 Seiko Epson Corp 液状体の吐出方法、カラーフィルタの製造方法、有機ｅｌ素子の製造方法
JP2010069818A (ja) * 2008-09-22 2010-04-02 Konica Minolta Ij Technologies Inc 液体吐出装置
JP2013188975A (ja) * 2012-03-14 2013-09-26 Konica Minolta Inc インクジェット記録装置

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019107860A (ja) * 2017-12-20 2019-07-04 エスアイアイ・プリンテック株式会社 液体噴射ヘッド、液体噴射記録装置、液体噴射ヘッドの駆動方法および液体噴射ヘッドの駆動プログラム
JP7002317B2 (ja) 2017-12-20 2022-01-20 エスアイアイ・プリンテック株式会社 液体噴射ヘッド、液体噴射記録装置、液体噴射ヘッドの駆動方法および液体噴射ヘッドの駆動プログラム
JP2019119146A (ja) * 2018-01-09 2019-07-22 セイコーエプソン株式会社 印刷装置及び媒体の加熱方法
JP2020025916A (ja) * 2018-08-10 2020-02-20 東芝テック株式会社 薬液吐出装置
JP7149765B2 (ja) 2018-08-10 2022-10-07 東芝テック株式会社 薬液吐出装置
JP2022061262A (ja) * 2020-10-06 2022-04-18 コニカミノルタ株式会社 捺染用インクジェットインク、捺染用インクジェットインクセット、および画像形成方法
JP7593040B2 (ja) 2020-10-06 2024-12-03 コニカミノルタ株式会社 捺染用インクジェットインク、捺染用インクジェットインクセット、および画像形成方法
JP2023005600A (ja) * 2021-06-29 2023-01-18 理想科学工業株式会社 捺染物の製造方法
JP7724091B2 (ja) 2021-06-29 2025-08-15 理想科学工業株式会社 捺染物の製造方法

Also Published As

Publication number Publication date
PT3118000T (pt) 2019-02-06
JPWO2015137497A1 (ja) 2017-04-06
JP6406346B2 (ja) 2018-10-17
EP3118000A1 (fr) 2017-01-18
EP3118000B1 (fr) 2018-12-19
EP3118000A4 (fr) 2017-11-22

Similar Documents

Publication Publication Date Title
JP6341206B2 (ja) インクジェット染色方法
JP6048211B2 (ja) 顔料捺染インクジェット記録方法
JP6406346B2 (ja) インクジェット記録方法
JP7218571B2 (ja) 液体吐出装置、インクジェット記録方法及び顔料捺染インク組成物
JPH06191143A (ja) インクジェット記録方法、かかる方法に用いるインクセット、かかる方法に用いる機器
JP6315068B2 (ja) 顔料捺染インクジェット記録方法、インクジェット記録装置
JPH09279489A (ja) インクジェット捺染用布帛、インクジェット捺染方法および捺染物
JPH08176973A (ja) インクジェット捺染方法および捺染物
CN108698421A (zh) 喷墨记录方法
JP5117026B2 (ja) 画像形成装置
JP2020157709A (ja) インクジェット記録装置及びインクジェット捺染方法
JP2005281523A (ja) インクジェットインクの製造方法及びインクジェット記録方法
JP5714611B2 (ja) サーマルインクジェットプリントヘッドにおけるコゲーションを最小限に抑える方法
EP3141656B1 (fr) Procédé d'impression à jet d'encre et dispositif d'impression à jet d'encre
JP7767728B2 (ja) 記録方法および記録装置
JP2010069817A (ja) インクジェット記録方法
US12325237B2 (en) Liquid discharge head and liquid discharge apparatus
US9056459B2 (en) Inkjet recording device and inkjet recording method
JPH10331078A (ja) インクジェット染色用布帛、それを用いたインクジェット染色方法およびインクジェット染色物
JP2002355958A (ja) インクジェット記録方法及びインクセット
JP2010070886A (ja) インクジェット記録方法
JP2023180762A (ja) 液体吐出ヘッド、液体吐出装置
WO2025205868A1 (fr) Tête d'éjection de liquide, dispositif d'enregistrement d'éjection de liquide, procédé de commande de tête d'éjection de liquide et procédé de commande de dispositif d'enregistrement d'éjection de liquide
JPH08120577A (ja) インクジェット捺染用布帛、インクジェット捺染方法およびインクジェット捺染物
JP2004285162A (ja) インクジェット捺染用インク、インクジェット捺染用インクセットとそれらを用いたインクジェット記録方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 15761762

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2016507853

Country of ref document: JP

Kind code of ref document: A

REEP Request for entry into the european phase

Ref document number: 2015761762

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 2015761762

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: DE