WO2010077102A2 - Tête d'impression à impression directe - Google Patents

Tête d'impression à impression directe Download PDF

Info

Publication number
WO2010077102A2
WO2010077102A2 PCT/KR2009/007997 KR2009007997W WO2010077102A2 WO 2010077102 A2 WO2010077102 A2 WO 2010077102A2 KR 2009007997 W KR2009007997 W KR 2009007997W WO 2010077102 A2 WO2010077102 A2 WO 2010077102A2
Authority
WO
WIPO (PCT)
Prior art keywords
ink
motor
print head
pressing member
direct printing
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/KR2009/007997
Other languages
English (en)
Korean (ko)
Other versions
WO2010077102A3 (fr
Inventor
김남수
김태훈
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.)
UNIVERSITY FOUNDATION OF SEO KYEONG
Original Assignee
UNIVERSITY FOUNDATION OF SEO KYEONG
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 UNIVERSITY FOUNDATION OF SEO KYEONG filed Critical UNIVERSITY FOUNDATION OF SEO KYEONG
Publication of WO2010077102A2 publication Critical patent/WO2010077102A2/fr
Publication of WO2010077102A3 publication Critical patent/WO2010077102A3/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
    • 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
    • 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
    • B41J2/05—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers produced by the application of heat
    • 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
    • B41J2/17—Ink jet characterised by ink handling
    • B41J2/175—Ink supply systems ; Circuit parts therefor

Definitions

  • the present invention relates to a direct print type print head used to form a pattern on a substrate.
  • liquid crystal displays LCDs
  • organic light emitting diodes OLEDs
  • plasma display panels PDPs
  • the pattern is formed on the substrate, the photolithography process has a disadvantage that it is complicated and generates a lot of contaminants.
  • the pattern is formed by a direct printing method.
  • ink-jet printing technology which was mainly applied to low-cost printers, is leading the manufacturing innovation of LCD, OLED, PDP, etc., because the economy is, above all, the manufacturing process in the industry. It is expected to reduce the manufacturing cost by 10 ⁇ 30% since it can be shortened to 3 or 4 steps from the existing 13 ⁇ 16 steps and does not use expensive photo equipment.
  • Inkjet ejects ink in the form of droplets using a piezo method, wherein the ink is ejected by deforming the piezoelectric element when electricity is supplied to the piezoelectric element.
  • this method may cause nozzles to be clogged when using high-viscosity ink, and the amount of ink ejected is not constant and it is ejected in the form of water droplets, which limits the size of the print pattern. pico-scale printing is difficult.
  • only low-viscosity (about 5 cP or less) ink can be used, and it is difficult to print on a flexible substrate, and it is also difficult to form a thick film of 5 mu m or more.
  • the ink ejection in the aerosol method is achieved by applying the pressure to the nozzle after supporting the particles dispersed in the solution by mechanical agitation, ultrasonic waves or the like, there is an advantage that the adhesive strength is high when forming a pattern on a plastic substrate.
  • the amount of ink ejected as the particles accumulate in the nozzle is changed, and thus there is a problem that the correct amount cannot be ejected.
  • An object of the present invention is to provide a printhead of a direct printing method capable of precisely printing using high viscosity ink.
  • an ink chamber including a nozzle in which ink supplied from the outside is stored and an ejected ink is ejected at a lower end thereof;
  • a pressurizing member which moves up and down in the ink chamber and applies pressure to eject ink from the nozzle when the ink is lowered;
  • a printhead of a direct printing method including a pressurizing member driving means for raising and lowering the pressurizing member with the power of a stepping motor moving step by step corresponding to the number of input pulses.
  • the motor is a rotational stepping motor
  • the pressing member driving means may include a power transmission mechanism for converting the rotational movement of the motor to a linear movement to convey to the pressing member.
  • the power transmission mechanism includes a screw shaft connected at both ends to the shaft and the pressing member of the motor; It includes a nut member coupled to the screw shaft, the nut member can be mounted to the surrounding components.
  • the lead of the screw shaft is 1 to 3mm
  • the motor may be one rotation at 800 to 3,200 pulse input.
  • an ink injection hole may be provided around the ink chamber, and a backflow preventing means may be installed in the ink injection hole.
  • the motor is a linear stepping motor may be directly connected to the pressing member.
  • the present invention has the advantage that it can print by ejecting the correct amount of ink in the correct position. In particular, even when using a high-viscosity ink, it is possible to precisely control the amount of ink to be ejected, there is an advantage that fine printing is possible.
  • FIG. 1 is a perspective view showing a print head of a direct printing method according to a first embodiment of the present invention.
  • FIGS. 2 and 3 are cross-sectional views of Figure 1, Figure 2 shows a state in which the pressing member is raised, Figure 3 shows a state in which the pressing member is lowered.
  • FIG. 4 is a cross-sectional view illustrating a print head of a direct printing method according to a second embodiment of the present invention.
  • pressing member 30 pressing member driving means
  • FIG. 1 is a perspective view showing a printhead of a direct printing method according to a first embodiment of the present invention
  • Figures 2 and 3 is a cross-sectional view of Figure 1, as shown in Figures 1 to 3, of the present invention
  • the printhead of the direct printing method according to the first embodiment includes an ink chamber 10 having a nozzle 12 at a lower end thereof, a pressurizing member 20 that moves up and down within the ink chamber 10, and And pressing member driving means 30 for elevating the pressing member 20.
  • the ink chamber 10 has a long and hollow structure up and down by a cylindrical portion 10a and a cone-shaped cone portion 10b integrally provided at the lower end of the cylindrical portion 10a.
  • the cylindrical portion 10a is formed such that the inner diameter is constant and at least a portion of the upper end is opened.
  • the cone portion 10b is formed such that its inside gradually shrinks toward the lower side, and the nozzle 12 is disposed at the end thereof.
  • At least one ink injection hole 14 is formed around the cylindrical portion 10a, and an ink supply line 40 is connected to the ink injection hole 14. Ink provided from an ink source (not shown) is transported along this ink supply line 40 and stored inside the ink chamber 10.
  • the pressing member 20 is made of a size that can be slid in the ink chamber 10, and is preferably formed to be the same as or similar to the inside of the cone portion 10b.
  • the pressurizing member 20 pressurizes the ink stored in the ink chamber 10 when descending by the pressurizing member driving means 30, and thus the ink stored in the ink chamber 10 is ejected from the nozzle 12.
  • the pressing member 20 may have at least one groove formed along the circumference thereof, and the groove of the pressing member 20 maintains airtight between the ink chamber 10 and the pressing member 20.
  • the ring can be fitted.
  • the pressure member driving means 30 includes a motor 32 and a power transmission mechanism for converting the rotational movement of the motor 32 into a linear motion and transmitting the pressure member 20 to the pressure member 20 to be lifted. .
  • the motor 32 is a rotary stepping motor that rotates by a predetermined angle (ie, step angle) in correspondence to the number of pulses to be input.
  • the rotating stepping motor includes 800 to 3,200.
  • One rotation at the time of pulse input and the maximum torque was applied to 10-600 Nm.
  • one rotation when the 800 pulse is input means that the step angle is 0.45 ° (360 ⁇ ⁇ 800)
  • one rotation when the 3,200 pulse is input means that the step angle is 0.1125 ° (360 ⁇ ⁇ 3,200). it means.
  • the power transmission mechanism has a straight screw shaft 34 in which one of both ends is connected to the motor 32 by a connecting means such as a coupling, and rotates by the rotational force of the motor 32. And a nut member 36 forming a screw pair with the screw shaft 34.
  • the motor 32 is located above the ink chamber 10.
  • the screw shaft 34 is connected to the pressing member 20 through the open portion of the ink chamber 10 (that is, the open upper end of the cylindrical portion 10a) of the other end of both ends thereof, and the nut member. 36 is firmly mounted to the upper end side of the ink chamber 10 by the fastening means.
  • the screw shaft 34 and the nut member 36 which make up a screw thread are comprised so that the screw shaft 34 may move 1 to 3 mm at 1 rotation by the motor 32. That is, the lead of the screw shaft 34 is 1-3 mm.
  • the screw shaft 34 rotates when the motor 32 is operated, and the screw shaft 34 is fixed because the nut member 36 is fixed.
  • This piston rises or descends as if the piston is moving, and thus the pressing member 20 is lifted together with the screw shaft 34.
  • the motor 32 is a stepping motor of a rotary type that rotates once when 800 to 3,200 pulses are input, and the lead of the screw shaft 34 is 1 to 3 mm, the pressing member 20 is moved in ultra-precision units. For example, if the motor rotates once at 800 pulse inputs and the lead of the screw shaft is 3 mm, the screw shaft moves by 0.00375 mm per one step angle (0.45 °).
  • the maximum torque of the motor 32 is 10 to 600 Nm. Therefore, even when a high viscosity (about 5 cP or more) ink is used as the ink, the ink is ejected smoothly without clogging. That is, the correct amount of ink can be ejected at the correct position.
  • reference numeral 25 which is not explained, is a backflow preventing means installed in the ink inlet 14 to open and close the ink inlet 14, and the backflow preventing means 25 is a check valve as an example. valve).
  • the non-return means 25 may allow the ink transported along the ink supply line 40 to flow into the ink chamber 10. However, the ink 10 stored in the ink chamber 10 may be reversed. It cannot be introduced into the ink supply line 40. That is, the backflow prevention means 25 serves to prevent ink from flowing into the ink supply line 40 when ink is ejected by the pressing member 20.
  • the printing apparatus to which the print head of the direct printing method according to the first embodiment of the present invention is applied includes a plurality of print heads, a head driving device for moving the print head in the XYZ axis direction, and the head driving device. It can be configured to include a control unit for controlling the operation of the. At this time, the controller first allows one print head to perform a print job, and controls the other print head to continue the print job while the ink of the print head is used up and is being charged. This prevents print jobs from being delayed during the ink filling time.
  • FIG. 4 is a cross-sectional view illustrating a print head of a direct printing method according to a second embodiment of the present invention.
  • the print head of the direct printing method according to the second embodiment of the present invention is different from the first embodiment.
  • the other configuration and the effect are all the same, the space between the pressing member 20-1 and the ink chamber 10 is changed in accordance with the lifting movement of the pressing member 20-1, The difference is that it further comprises a pressure pump (not shown). This is described as follows.
  • the pressing member 20-1 is formed so that its circumference is smaller than the inner diameter of the cylindrical part 10a, and is formed in the same shape so that the lower part may correspond with the inside of the cone part 10b.
  • the pressurizing pump supplies ink from the ink supply source to the ink chamber 10 at a constant pressure (that is, a pressure of the force applied by the pressurizing member and the pressurizing member driving means to eject the ink) so that the ink passes through the nozzle 12. Allow for immediate spontaneous discharge. Therefore, when the pressurizing member 20-1 is positioned in the cone portion 10b and then ink is supplied by the pressurizing pump, the ink passes through the pressurizing member 20-1 and the cone portion 10b and passes through the nozzle 12. Squirt through At this time, the amount of ink ejected is changed in accordance with the interval between the pressing member 20-1 and the cone portion 10b.
  • the ink is ejected by any of the following methods: 1 by the pressure member 20-1 and the pressure member driving means 30 and 2 by the pressure member 20-1 and the pressure pump. It can be achieved by choice. Of course, these two methods can be combined.
  • the ejection amount of ink through the nozzle 12 is precisely adjusted by adjusting the gap between the pressing member driving means 30 or the pressing member 20-1 and the cone portion 10b including the rotating stepping motor.
  • the gap between the pressing member driving means 30 or the pressing member 20-1 and the cone portion 10b including the rotating stepping motor is precisely adjusted by adjusting the gap between the pressing member driving means 30 or the pressing member 20-1 and the cone portion 10b including the rotating stepping motor.
  • the power transmission mechanism may be a ball screw with a plurality of balls interposed between the screw shaft 34 and the nut member 36.
  • the motor 32 is a linear stepping motor (linear stepping motor) having a linear movement of the pressing member (20) It is directly connected to 20-1 to elevate the pressing members 20 and 20-1.

Landscapes

  • Ink Jet (AREA)
  • Coating Apparatus (AREA)

Abstract

La présente invention concerne une tête d'impression à impression directe, comportant : une chambre à encre équipée d'une buse servant à projeter de l'encre ; un organe de mise sous pression qui monte et descend à l'intérieur de la chambre à encre ; et un moyen d'entraînement de l'organe de mise sous pression qui fait monter et descendre l'organe de mise sous pression et est actionné par un moteur pas à pas.
PCT/KR2009/007997 2008-12-30 2009-12-30 Tête d'impression à impression directe Ceased WO2010077102A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020080136551A KR20100078319A (ko) 2008-12-30 2008-12-30 직접인쇄방식의 프린트 헤드
KR10-2008-0136551 2008-12-30

Publications (2)

Publication Number Publication Date
WO2010077102A2 true WO2010077102A2 (fr) 2010-07-08
WO2010077102A3 WO2010077102A3 (fr) 2010-10-21

Family

ID=42310415

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2009/007997 Ceased WO2010077102A2 (fr) 2008-12-30 2009-12-30 Tête d'impression à impression directe

Country Status (2)

Country Link
KR (1) KR20100078319A (fr)
WO (1) WO2010077102A2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101370031B1 (ko) * 2012-07-13 2014-03-05 한국프린티드일렉트로닉스연구조합 고점도 재료 분사를 위한 직접 인쇄방식의 프린트 헤드

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4099584B2 (ja) * 2003-08-14 2008-06-11 ソニー株式会社 液体吐出装置及び液体吐出調整方法
US7252372B2 (en) * 2004-03-08 2007-08-07 Fujifilm Corporation Liquid ejection apparatus and ejection control method
JP2006341452A (ja) * 2005-06-08 2006-12-21 Fujifilm Holdings Corp 液体吐出装置及び画像形成装置
KR100644707B1 (ko) * 2005-07-23 2006-11-10 삼성전자주식회사 잉크 공급 장치 및 이를 구비하는 잉크젯 화상형성장치

Also Published As

Publication number Publication date
WO2010077102A3 (fr) 2010-10-21
KR20100078319A (ko) 2010-07-08

Similar Documents

Publication Publication Date Title
US7281785B2 (en) Fluid handling in droplet deposition systems
EP0787587B1 (fr) Dispositif d'impression par jet encre
US8888230B2 (en) Fluid ejecting apparatus
US8991954B2 (en) Fluid ejection device with fluid displacement actuator and related methods
KR101475250B1 (ko) 잉크젯 헤드의 유지보수 방법 및 기구, 및 장치
EP2489518A1 (fr) Appareil d'éjection de liquide
CN101663100B (zh) 喷墨吐出头及其装置
US8186811B2 (en) Inkjet printing apparatus and method of driving inkjet printing apparatus
WO2010077102A2 (fr) Tête d'impression à impression directe
JP2009538225A (ja) 液滴吐出のためのシステムと方法
JP2013180444A (ja) 液体噴射装置
US20090237466A1 (en) Inkjet recording head and inkjet recording device
JP2019157062A (ja) 活性エネルギー線硬化型組成物、活性エネルギー線硬化型インクジェットインクおよびインクジェット記録装置
KR101125155B1 (ko) 직접 인쇄 방식의 프린터 헤드.
JP4572330B2 (ja) 液滴吐出装置、液滴吐出装置におけるノズルの吐出性能維持方法、電気光学装置の製造方法
CN102145586B (zh) 流体喷射装置以及清洁方法
JP5644309B2 (ja) 流体噴射装置
US20120169809A1 (en) Liquid ejecting apparatus
CN101462409A (zh) 液体供给装置和液体喷射装置
JP2012056287A (ja) 液体噴射装置
JP2012139946A (ja) 液体噴射装置
JP2010145565A (ja) 液滴吐出ヘッドの液状体撹拌方法及び液滴吐出装置
JP2011255620A (ja) 流体噴射装置
JP2013220551A (ja) 液体噴射装置
JP2010120295A (ja) 液体噴射装置

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: 09836423

Country of ref document: EP

Kind code of ref document: A2

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 09836423

Country of ref document: EP

Kind code of ref document: A2