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WO2000026032A1 - Mise en oeuvre d'une tete d'impression a jet d'encre - Google Patents

Mise en oeuvre d'une tete d'impression a jet d'encre Download PDF

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Publication number
WO2000026032A1
WO2000026032A1 PCT/JP1999/005994 JP9905994W WO0026032A1 WO 2000026032 A1 WO2000026032 A1 WO 2000026032A1 JP 9905994 W JP9905994 W JP 9905994W WO 0026032 A1 WO0026032 A1 WO 0026032A1
Authority
WO
WIPO (PCT)
Prior art keywords
voltage
droplet
pressure generating
generating chamber
ink
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/JP1999/005994
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English (en)
Japanese (ja)
Inventor
Masakazu Okuda
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.)
NEC Corp
Original Assignee
NEC Corp
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 NEC Corp filed Critical NEC Corp
Publication of WO2000026032A1 publication Critical patent/WO2000026032A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • B41J2/04541—Specific driving circuit
    • 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
    • B41J2/04588—Control methods or devices therefor, e.g. driver circuits, control circuits using a specific waveform
    • 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
    • B41J2/0459—Height of the driving signal being adjusted
    • 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
    • B41J2/04593—Dot-size modulation by changing the size of the drop
    • 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
    • B41J2/21—Ink jet for multi-colour printing
    • B41J2/2121—Ink jet for multi-colour printing characterised by dot size, e.g. combinations of printed dots of different diameter
    • B41J2/2128—Ink jet for multi-colour printing characterised by dot size, e.g. combinations of printed dots of different diameter by means of energy modulation

Definitions

  • the present invention relates to an ink jet recording apparatus, and in particular, records a character or an image by ejecting minute ink droplets from a nozzle.
  • the present invention relates to a method and an apparatus for driving an ink jet recording head.
  • a pressure wave (acoustic wave) is generated in the pressure generating chamber filled with ink, and the pressure wave causes the nozzle connected to the pressure generating chamber to generate a pressure wave (acoustic wave).
  • a pressure wave acoustic wave
  • Fig. 3 shows an example of the configuration of this type of inkjet recording head.
  • the pressure generating chamber 61 has a nozzle 62 for discharging ink, and an ink from an ink tank (not shown) through a common ink chamber 63.
  • An ink supply route 64 for guiding is connected.
  • a diaphragm 65 is provided on the bottom surface of the pressure generating chamber 61. When ejecting ink droplets, the diaphragm 65 is displaced by a piezoelectric actuator 66 provided outside the pressure generating chamber 61, causing a volume change in the pressure generating chamber 61. Thus, a pressure wave is generated in the pressure generation chamber 61.
  • the negative part of the ink filled in the pressure generating chamber 61 is jetted to the outside through the nozzle 62 and flies as an ink drop 67.
  • the flying ink droplet 67 lands on a recording medium such as recording paper to form a recording dot.
  • a recording medium such as recording paper
  • characters and images are recorded on recording paper.
  • a drive waveform as shown in FIG. 8 (a) is used. That is, in the voltage change process 31 (rising process), the voltage applied to the piezoelectric actuator 66 is increased, and the volume of the pressure generating chamber 61 is rapidly decreased, thereby increasing the ink.
  • gradation recording There are two methods of performing gradation recording: (a) a method in which one pixel (pixel) is formed with a plurality of droplets by fixing the ink droplet diameter (pseudo gradation); and (b) an ink.
  • the method (b) is generally suitable for achieving both high-quality recording and high-speed recording.
  • the method (b) since the density can be changed for each dot, high image quality can be obtained at a relatively low recording resolution. Therefore, the number of dots required is small, and high-speed recording is possible.
  • the required recording resolution will remain at 400 dpi, and the required number of dots will be 0.1 square inch. It becomes 6 X 106. That is, in the method (b), the required number of dots is about 110, and if the ejection frequency of the ink droplet is the same, it is possible to obtain about 10 times the recording speed. (However, in reality,
  • the method (a) allows the discharge frequency to be set slightly higher, so that the actually obtained speed ratio is about 2 to 5 times).
  • the fact that the number of recording dots is small means that the amount of image signal data is small, and the time required for the image processing process executed before recording can be greatly reduced.
  • droplet size modulation is an extremely effective means for achieving both high-speed recording and high-quality recording.
  • various methods have been proposed for implementing droplet diameter modulation with an ink jet recording head.
  • a method of changing the voltage (voltage amplitude VI in FIG. 8 (a)) applied to the piezoelectric actuator is known.
  • the volume of the ejected ink droplet can be changed by increasing or decreasing the volume change amount of the pressure generating chamber at the time of ejection.
  • a method for performing droplet diameter modulation by changing a meniscus shape immediately before ejection is disclosed.
  • the pulse voltage applied to the piezoelectric element is first maintained for a certain period of time at a negative first voltage, then rapidly raised to a positive second voltage.
  • a driving method in which the voltage is maintained for a certain time and then gradually reduced to zero voltage has been described as a conventional technique.
  • the modulation of the droplet diameter is performed by changing the amount of voltage change (voltage V 2 in FIG. 8B) in the first voltage change process 34.
  • Japanese Patent Application Laid-Open No. 2-61337 discloses a driving waveform as shown in FIG. 9 as a driving method for suppressing a change in droplet speed due to the diameter of a discharged droplet.
  • the drive voltage waveform so that the voltage change amount (V1, VI ', VI ⁇ ) at the time of ejection is always constant, the droplet speed is constant regardless of the droplet diameter. It can be kept at.
  • the size of the droplet size modulation range (the difference between the maximum droplet size and the minimum droplet size). In other words, no matter how many gradations (number of droplet diameter levels), if the modulation range of droplet diameter is narrow, both high-quality recording and high-speed recording can be achieved. It will be difficult to do. For example, when the droplet diameter modulation range is narrow in the large diameter region (for example, 30 to 40 ⁇ ), no matter how many gradations, the granularity of the highlight cannot be removed, resulting in high image quality. Recording will be difficult.
  • the resolution is set high because the maximum drop diameter is small, although the highlight area can be kept smooth.
  • Required for example, 800 dpi
  • droplet diameter modulation range As described above, droplet diameter modulation using meniscus control is a very effective means for achieving both high-quality recording and high-speed recording.
  • drop diameter modulation by meniscus control has not yet been put to practical use.
  • One of the reasons is that it is difficult to obtain a sufficiently wide droplet diameter modulation range by the conventional driving method as shown in FIG. Hereinafter, the reason will be described in detail.
  • the voltage range that can be applied to piezoelectric actuators used in inkjet recording heads is limited by the structure (distance between electrodes, dielectric breakdown of piezoelectric material, polarization retention, etc.) . As will be described later, this allowable voltage range affects the droplet diameter modulation range when performing meniscus control.
  • the allowable voltage range varies greatly depending on the structure and material of the piezoelectric actuator, but here, the explanation will be continued assuming that the allowable voltage range is 0 to 40 V.
  • the volume change of the pressure generating chamber is proportional to the displacement of the piezoelectric actuator, and the displacement of the piezoelectric actuator is almost proportional to the applied voltage. Therefore, the maximum droplet diameter that can be obtained is determined by the voltage change amount (VI) during ejection, and setting VI as large as possible is an important point in obtaining a wide droplet diameter modulation range. Becomes
  • the drive waveform is as shown in FIG. 10 (b).
  • a large “pull” A process of increasing the volume of the pressure generating chamber
  • the offset voltage is set to 10 V, and by changing the strength of the “pull” (V 2), three types of droplets, large, medium, and small, are obtained.
  • 5 shows a drive waveform for discharging the ink.
  • the present invention has been made to solve the above problems, and an object of the present invention is to make it possible to perform droplet diameter modulation over a wide range even with a narrow applied voltage range. It is an object of the present invention to provide a method and an apparatus for driving an inkjet recording head which can achieve both high-quality recording and high-speed recording without increasing the size of the apparatus and the size of the apparatus. Disclosure of the invention
  • Driving method of the ink jet recording head of the present invention to achieve the above object
  • the method comprises: a nozzle, a pressure generating chamber, and an electromechanical transducer provided at a position corresponding to the pressure generating chamber, wherein a driving voltage is applied to the electromechanical transducer during recording, and the pressure is applied to the pressure generating chamber.
  • the voltage waveform of the drive voltage may be changed to the pressure generation chamber immediately before ejection. At least a first voltage change process for applying a voltage to increase the volume of the pressure generating chamber, and a second voltage change process for applying a voltage so as to reduce the volume of the pressure generating chamber.
  • FIG. 1 is a diagram showing a drive waveform of an ink jet recording head according to one embodiment of the present invention.
  • FIG. 2 is a diagram showing a drive waveform of an ink jet recording head according to a second embodiment of the present invention.
  • FIG. 3 is a cross-sectional view showing a basic structure of the ink jet recording head.
  • FIG. 4 is a diagram showing an equivalent electric circuit of the ink jet recording head.
  • FIG. 5 is a diagram for explaining the relationship between the driving waveform and the nozzle particle velocity.
  • FIG. 6 is a diagram for explaining the principle of droplet diameter modulation by fall time control in the present invention.
  • FIG. 1 A first figure.
  • FIG. 7 shows a configuration of a control circuit of an ink jet recording head in one embodiment of the present invention.
  • FIG. 8 is a diagram showing a conventional drive waveform.
  • FIG. 9 is a diagram illustrating an example of a conventional drive waveform when performing droplet diameter modulation.
  • FIG. 10 is a diagram for explaining the relationship between the allowable voltage range and the droplet diameter modulation range.
  • BEST MODE FOR CARRYING OUT THE INVENTION The above-described principle of the present invention will be described based on a theoretical analysis result of an ink jet recording head using a lumped constant circuit model.
  • Fig. 4 (a) shows the result of replacing the ink jet recording head shown in Fig. 3 with an equivalent electric circuit.
  • m is INA one data Nsu [kg / m 4]
  • r is an acoustic resistance [N s Zm 5]
  • c is the acoustic capacitance [m 5 N]
  • u is the volume velocity [m 3 Z s]
  • ⁇ represents the pressure [Pa]
  • the suffix 0 represents the vibration system
  • 1 represents the pressure generation chamber system
  • 2 represents the ink supply path system
  • 3 represents the nozzle system.
  • the inertia m O and the acoustic capacitance c O in the circuit of FIG. 4A can be neglected.
  • the circuit in Fig. 4 (a) can be approximated by the circuit in Fig. 4 (b). That is, the pressure ⁇ ⁇ is applied to the series connection of the inductance m 2 and the acoustic resistance r 2 of the ink supply path system and the series connection of the nozzle system of the inertance m 3 and the acoustic resistance r 3. It is approximated as an equivalent circuit connected in parallel to the acoustic capacity c1 of the pressure generating chamber system.
  • the volume velocity at the nozzle part when using a drive waveform with a complicated shape as shown in Fig. 5 (b) is calculated at each node of the drive waveform (time 01, t1, t2, and 3). It can be obtained by superimposing the pressure waves generated in sections (B, C, D) of Section 8 and laying them together. That is, the volume velocity u 3 of the nozzle part generated by the driving waveform of FIG. 5 (b) is obtained by superposing the above equation (1) for each time section, and the following equation (2) is obtained. It is expressed as follows.
  • u 3 (/) u ' 3 ( ⁇ , ⁇ ⁇ ) + w' 3 (/-/ i ( 2 ) + u ' 3 ( ⁇ - ⁇ 2 , ⁇ 3 ) (t 2 ⁇ t ⁇ t 3 )
  • the fall time t1 is set to be small.
  • the microdroplets are obtained by increasing the amount of meniscus retraction (Fig. 6 (b)).
  • a large drop is obtained by setting the fall time t1 to a large value and keeping the amount of meniscus retreat small (Fig. 6 (a)).
  • the applied voltage is once reduced to near the allowable minimum voltage (0 V in Fig. 6 (a)), so that the voltage change during ejection (VI) is within the allowable voltage range (0 to 40V).
  • V in Fig. 6 (a) the allowable minimum voltage
  • VI the voltage change during ejection
  • the driving voltage waveform applied to the piezoelectric actuator is, as shown in FIG.
  • ink droplets are ejected from the nozzle by changing the pressure generation chamber in the opposite direction so as to reduce the volume.
  • the predetermined voltage which is the amount of voltage change at the falling edge, is made constant with respect to the change in the diameter of the ink droplet to be discharged.
  • the voltage change amount and the rise or fall time may be changed in accordance with the diameter of the ink droplet to be ejected.
  • a driving device for an ink jet recording head includes a nozzle, a pressure generating chamber, and an electromechanical transducer provided at a position corresponding to the pressure generating chamber.
  • a driving voltage is applied to the electromechanical transducer during recording to cause a volume change in the pressure generating chamber, thereby driving an ink jet recording head for discharging ink droplets from the nozzle.
  • the apparatus is provided with a plurality of waveform generating means (101, 102 in FIG. 7) for generating and amplifying different voltages according to the diameter of the ejected ink droplets, and the output of the plurality of waveform generating means is provided.
  • an ink jet recording head having the same basic structure as the ink jet recording head shown in FIG. 3 was used.
  • the head was fabricated by laminating a plurality of patterned thin plates.
  • a stainless steel plate having a thickness of 50 to 75 / m was bonded using an adhesive layer (thickness of about 20 ⁇ ) made of a thermosetting resin.
  • the head is provided with a plurality of pressure generating chambers 61 (arranged in the direction perpendicular to the paper surface of FIG. 3), which are connected by a common ink chamber 63.
  • the common ink chamber is connected to 63 ink tanks (not shown), and functions to guide the ink to each pressure generating chamber 61.
  • Each pressure generating chamber 61 communicates with a common ink chamber 63 via an ink supply path 64, and the inside of the pressure generating chamber 61 is filled with ink.
  • Each pressure generating chamber 61 is provided with a nozzle 62 for discharging ink.
  • the nozzle and the ink supply path were of the same shape, and were tapered with an opening diameter of 30 ⁇ m, a skirt diameter of 65 / im, and a length of 75 m. Drilling was performed with a press.
  • a diaphragm 65 is provided on the bottom surface of the pressure generating chamber 61, and the piezoelectric generating unit 66 as an electromechanical transducer installed outside the pressure generating chamber 61 is used for the pressure generating chamber. It is possible to increase or decrease the volume.
  • a thin plate of nickel formed by an electrode (electroforming) was used as the diaphragm 65.
  • a laminated piezoelectric ceramic was used for the piezoelectric actuator unit 66. The allowable applied voltage range of the piezoelectric actuator used is 0 to 40 V.
  • FIG. 7 shows a basic configuration of a driving circuit of the piezoelectric actuator 66.
  • a waveform generating circuit and a switching circuit constituting a driving circuit in order to modulate the droplet diameter in three stages (large droplet, medium droplet, and small droplet), three types of waveform generating circuits 101 corresponding to each droplet diameter are used. , 101 ′, and 101 ⁇ , and the respective waveforms are amplified by the amplification circuits 102, 102 ′, and 102 ′.
  • a piezoelectric signal is generated based on image data.
  • the driving waveform applied to the actuator 66 is switched by the switching circuit 103, and an ink droplet having a desired droplet diameter is ejected.
  • FIG. 1 is a diagram showing an example of a drive waveform used to modulate the diameter of a discharged droplet into three stages of large, medium, and small using the above-described ink jet recording head.
  • the fall time t1 ⁇ is set as small as 2 ⁇ s, so that a large pressure wave is generated in the first voltage change process 11 1, and the meniscus The amount of retreat was as large as 32 ⁇ .
  • the second voltage change process 12 2 a very thin liquid column is formed in the nozzle, and a droplet with a droplet diameter of 25 ⁇ is ejected at a droplet speed of 7 m / s. confirmed.
  • the medium drop waveform is set so that it is halfway between the large drop and the small drop. That is, the initial fall time t 1 ′ was set to 6 ⁇ s, and the amount of meniscus retraction was 11 m. As a result, a droplet with a droplet diameter of 30 / xm was ejected at a droplet speed of 8 ms. As described above, the larger the diameter of the ink droplet to be ejected, the larger the voltage change time (fall time t1) in the first voltage change process, so that It was confirmed that the ink droplet diameter could be modulated within the range.
  • the maximum diameter of the obtained droplet is limited to 35 ⁇ m.
  • the drop size modulation range was 25-35 m.
  • the droplet diameter modulation range is 25 to 42 ⁇ , which indicates that the present invention is effective for expanding the droplet diameter modulation range.
  • a wide droplet diameter modulation range can be realized within the allowable voltage range (0 to 40 V), so that high reliability and low device cost are ensured. High image quality and high-speed recording by drop diameter modulation can be realized.
  • FIG. 2 is a diagram illustrating a drive waveform according to the second embodiment of the present invention, and is a diagram illustrating an example of a drive waveform used for modulating the droplet diameter in three stages of large, medium, and small. is there.
  • the rise time t3 is set to 10 ⁇ S, which is close to the natural period of the pressure wave, so that a larger droplet can be obtained.
  • the drive waveform after the process according to the droplet diameter it was confirmed that an extremely wide droplet diameter modulation range (19 to 45 ⁇ m in this example) could be obtained.
  • the present invention is not limited to the configurations of the above-described embodiments.
  • the reference potential is offset to 10 V in all cases.
  • the piezoelectric actuator can apply a negative voltage, it is not necessary to offset the reference potential.
  • the voltage at the end of the first voltage change process is set to be the same (0 V) for all of the large, medium, and small drop waveforms, but may be set to different voltages.
  • the number of stages of the droplet diameter modulation is set to three stages of large, medium and small.
  • the present invention is not limited to such a configuration, and is set to three or more stages or three or less stages. The present invention can be applied to such cases.
  • the piezoelectric actuator used in the longitudinal vibration mode using the piezoelectric constant d33 was used, but the actuator in the longitudinal vibration mode using the piezoelectric constant d31 was used in the transverse vibration mode.
  • the present invention can also be applied to the case where an actuator utilizing the (deflection deformation mode) is used, and the same operational effects as described above can be obtained.
  • the laminated piezoelectric actuator is used.
  • the present invention can be applied to a case where a single-plate piezoelectric actuator is used.
  • the Kaiser type ink jet recording head as shown in FIG. 3 was used, but the groove provided in the piezoelectric actuator was used as a pressure generating chamber.
  • Ink jet recording of other structures such as heads
  • the present invention can be similarly applied to a head.
  • the present invention can be applied to an electromechanical transducer other than the piezoelectric actuator, for example, an ink jet recording head using an actuator using electrostatic force or magnetic force. You. Industrial applicability
  • a first effect of the present invention is that when performing droplet diameter modulation using meniscus control, a wide droplet diameter modulation range can be obtained, so that both high-speed recording and high-quality recording can be achieved. That's it.
  • the second effect of the present invention is that the reliability of the device can be ensured and the cost can be reduced.
  • the reason is that the voltage range applied to the piezoelectric actuator can be set small.

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  • Particle Formation And Scattering Control In Inkjet Printers (AREA)

Abstract

L'invention porte sur la mise en oeuvre d'une tête d'impression à jet d'encre dans laquelle on augmente la plage de modulation du diamètre d'une gouttelette par une gestion du ménisque de manière à réaliser un enregistrement d'image de haute qualité et à haute vitesse sans être amené à augmenter les coûts de fabrication et la taille de l'appareil. Le signal mettant en oeuvre un actionneur piézo-électrique a pour effet, par une première variation de tension d'augmenter le volume d'une chambre de pressurisation juste avant l'expulsion d'une gouttelette, et par une seconde (12) variation de tension d'expulser une gouttelette en faisant diminuer de façon abrupte le volume de la chambre de pressurisation. Pour moduler le diamètre d'une gouttelette expulsée, on joue sur la variation de tension t1, ce qui en l'occurrence, permet de commander la durée du mouvement de retrait du ménisque. Dans le as de l'expulsion d'une petite gouttelette, on a un t1 bref pour un grand retrait du ménisque, ce qui continue à l'obtention d'une petite gouttelette. Par contre, lors de l'expulsion d'une grosse gouttelette, on a un t1 long pour un léger retrait du ménisque, le second type de variation de tension (V1) donnant lieu à un allongement de façon à obtenir une plus grosse gouttelette.
PCT/JP1999/005994 1998-10-30 1999-10-28 Mise en oeuvre d'une tete d'impression a jet d'encre Ceased WO2000026032A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP10/309585 1998-10-30
JP30958598A JP2000127390A (ja) 1998-10-30 1998-10-30 インクジェット記録ヘッドの駆動方法

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Publication Number Publication Date
WO2000026032A1 true WO2000026032A1 (fr) 2000-05-11

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001089841A1 (fr) * 2000-05-24 2001-11-29 Fuji Xerox Co., Ltd. Procede d'entrainement de tete d'enregistrement a jet d'encre et enregistreur a jet d'encre

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4590216B2 (ja) * 2004-06-09 2010-12-01 オリンパス株式会社 液滴吐出ヘッドの検査装置及びその検査方法
JP5347325B2 (ja) * 2008-05-09 2013-11-20 セイコーエプソン株式会社 液体吐出装置、及び、液体吐出方法
JP5591032B2 (ja) * 2010-08-26 2014-09-17 富士フイルム株式会社 インクジェットヘッドの駆動装置及び駆動方法並びにインクジェット記録装置
JP6935174B2 (ja) * 2016-08-05 2021-09-15 東芝テック株式会社 インクジェットヘッドおよびインクジェットプリンタ

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59176055A (ja) * 1983-03-25 1984-10-05 Konishiroku Photo Ind Co Ltd オンデマンド型インクジエツト記録装置
JPH02192947A (ja) * 1988-10-14 1990-07-30 Fuji Electric Co Ltd インクジェット記録ヘッドの駆動方法
JPH06316074A (ja) * 1993-01-25 1994-11-15 Seiko Epson Corp インクジェット式記録ヘッドの駆動方法、及びその装置
JPH08336970A (ja) * 1995-04-14 1996-12-24 Seiko Epson Corp インクジェット式記録装置
JPH1016231A (ja) * 1996-07-04 1998-01-20 Canon Inc インクジェットヘッドおよびインクジェットカートリッジならびにインクジェット装置
JPH10193587A (ja) * 1997-01-08 1998-07-28 Seiko Epson Corp インクジェット式印刷装置及び印刷方法
JPH10286961A (ja) * 1997-02-17 1998-10-27 Seiko Epson Corp インクジェット式記録装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59176055A (ja) * 1983-03-25 1984-10-05 Konishiroku Photo Ind Co Ltd オンデマンド型インクジエツト記録装置
JPH02192947A (ja) * 1988-10-14 1990-07-30 Fuji Electric Co Ltd インクジェット記録ヘッドの駆動方法
JPH06316074A (ja) * 1993-01-25 1994-11-15 Seiko Epson Corp インクジェット式記録ヘッドの駆動方法、及びその装置
JPH08336970A (ja) * 1995-04-14 1996-12-24 Seiko Epson Corp インクジェット式記録装置
JPH1016231A (ja) * 1996-07-04 1998-01-20 Canon Inc インクジェットヘッドおよびインクジェットカートリッジならびにインクジェット装置
JPH10193587A (ja) * 1997-01-08 1998-07-28 Seiko Epson Corp インクジェット式印刷装置及び印刷方法
JPH10286961A (ja) * 1997-02-17 1998-10-27 Seiko Epson Corp インクジェット式記録装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001089841A1 (fr) * 2000-05-24 2001-11-29 Fuji Xerox Co., Ltd. Procede d'entrainement de tete d'enregistrement a jet d'encre et enregistreur a jet d'encre
US6962398B2 (en) 2000-05-24 2005-11-08 Fuji Xerox Co., Ltd. Method for driving ink jet recording head and ink jet recorder

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