KR940011212A - 잉크냉각식 열방식 잉크제트 프린트헤드 - Google Patents

잉크냉각식 열방식 잉크제트 프린트헤드 Download PDF

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KR940011212A
KR940011212A KR1019930025669A KR930025669A KR940011212A KR 940011212 A KR940011212 A KR 940011212A KR 1019930025669 A KR1019930025669 A KR 1019930025669A KR 930025669 A KR930025669 A KR 930025669A KR 940011212 A KR940011212 A KR 940011212A
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heat exchanger
ink
print cartridge
heat
heating resistor
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KR1019930025669A
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KR100225709B1 (ko
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세콤브 다나
제이. 닐슨 닐스
퐁-호 메이
월터 영 킹-와
에이. 핸드 로렌스
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디. 크레이그 노드런드
휴렛트 팩카드 캄파니
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    • 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
    • B41J2/21—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
    • 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
    • B41J2/04528—Control methods or devices therefor, e.g. driver circuits, control circuits aiming at warming up the head
    • 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
    • B41J2/04563—Control methods or devices therefor, e.g. driver circuits, control circuits detecting head temperature; Ink temperature
    • 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
    • B41J2/0458—Control methods or devices therefor, e.g. driver circuits, control circuits controlling heads based on heating elements forming bubbles
    • 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
    • B41J2/135—Nozzles
    • B41J2/14—Structure thereof only for on-demand ink jet heads
    • B41J2/14016—Structure of bubble jet print heads
    • B41J2/1408—Structure dealing with thermal variations, e.g. cooling device, thermal coefficients of materials
    • 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
    • B41J2/315—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material
    • B41J2/32—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material using thermal heads
    • B41J2/35—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material using thermal heads providing current or voltage to the thermal head
    • B41J2/355—Control circuits for heating-element selection
    • 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
    • B41J2/315—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material
    • B41J2/32—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material using thermal heads
    • B41J2/35—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material using thermal heads providing current or voltage to the thermal head
    • B41J2/355—Control circuits for heating-element selection
    • B41J2/36—Print density control
    • 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
    • B41J2/315—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material
    • B41J2/32—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material using thermal heads
    • B41J2/35—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material using thermal heads providing current or voltage to the thermal head
    • B41J2/355—Control circuits for heating-element selection
    • B41J2/36—Print density control
    • B41J2/365—Print density control by compensation for variation in temperature
    • 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
    • B41J2/315—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material
    • B41J2/32—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material using thermal heads
    • B41J2/375—Protection arrangements against overheating
    • 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
    • B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
    • B41J29/377—Cooling or ventilating arrangements
    • 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
    • B41J2202/00—Embodiments of or processes related to ink-jet or thermal heads
    • B41J2202/01—Embodiments of or processes related to ink-jet heads
    • B41J2202/08—Embodiments of or processes related to ink-jet heads dealing with thermal variations, e.g. cooling

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  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Particle Formation And Scattering Control In Inkjet Printers (AREA)
  • Ink Jet (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)

Abstract

잉크냉각식 잉크제트 프린트 카트리지(20)는 기재(30)의 배면에 효율적인 열교환기(22)를 구비하여 히트싱트의 필요를 제거하였다. 본 발명에 따르면, 가열실(40)로 흐르는 모든 잉크(38)는 열교환기(22)를 통과한다. 열교환기(22)의 기하학적 구조는, 프린트헤드가 흡수한 잔류열의 대부분이 잉크가 가열실(40)로 흘러들어갈 때 잉크로 전달되도록 선택한다. 게다가, 열교환기(22)를 통해 흐르는 잉크의 압력저하는 그것이 가열실(40)의 재충전 속도를 대폭 감소시키지 않을 만큼은 낮아야 한다. 열교환기(22)는 하나이상의 열교환기 활성면을 가질 수 있다. 열교환기는 그것 자체의 열적 매체를 거의 갖지 않으며 히트싱크의 필요를 제거함으로써 프린트헤드의 열적 매체를 대폭 감소시킨다. 이에 따르면, 프린트헤드의 위밍업시간이 수분의 1초로 단축된다.

Description

잉크냉각식 열방식 잉크제트 프린트헤드
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명의 바람직한 실시예에 따라 제조된 프린트헤드의 에너지 및 운반매체의 흐름도,
제2도는 본 발명의 바람직한 실시예에 대한 사시도로서, 외측 단열재를 제거한 상태의 도면임,
제3도는 제2도에 도시한 프린트헤드의 중간을 자른 단면도,
제4도는 본 발명의 다른 실시예에 대한 사시도.

Claims (9)

  1. 잉크제트 프린트내의 잉크를 분사하는데 적합한 프린트카트리지를 냉각하기 위한 장치로서, 활성시 상기 카트리지로부터 노즐을 통해 잉크방울을 선택적으로 분사하여 상기 프린트카트리지내에 열을 발생시키는 복수개의 가열저항기와, 상기 가열저항기에서 발생된 열을 잉크로 전달하기 위해서 상기 잉크 및 상기 가열저항기의 양자와 열적으로 연통가능하게 배치되는 열교환기를 상기 프린트 카트리지내에 포함하는 장치에 있어서, 상기 열교환기는 : 1과 d는 열교환기의 길이 및 깊이이고, α는 잉크의 열확산율, Q′은 단위채널폭당 체적흐름속도, △P는 최대 프린트헤드 가열율에서 열교환기를 가로지른 압력저하, △Pref는 노즐을 가로질러 최대 모세관 압력 상승분과 동일한 기준 압력차이고, T1은 열교환기를 떠나는 잉크 대부분의 압력, T0는 열 교환기로 들어가는 잉크의 온도이며, Tw는 열교환기내 열활성표면의 온도인 경우로 규정되는 85%보다 큰 효율(E)과 무한정 종횡비변수(A) 및 압력저하(P)를 갖는 것을 특징으로 하는 프린트카트리지 냉각장치.
  2. 제1항에 있어서, 이중 측면 열교환기의 경우 A는 약 0.06 보다 크고 P는 약 0.25 보다 작은 것을 특징으로 열교환기.
  3. 제1항에 있어서, 단일측면 열교환기의 경우 A는 약 0.18 보다 크고 P는 약 0.25 보다 작은 것을 특징으로 하는 열교환기.
  4. 제1항에 있어서, 상기 열교환기는 약 0.2 내지 0.3㎝의 유효길이(1)와 약 0.010㎝ 내지 0.015㎝의 유효길이(d)를 갖는 것을 특징으로 하는 열교환기.
  5. 제1항에 있어서, 상기 열교환기는 상기 가열저항기에서 발생된 열을 상기 잉크로 전달하기 위해서 거의 무시할 수 있을 만한 열커패시턴스를 갖는 열활성 전도성부재를 구비하는 것을 특징으로 하는 열교환기.
  6. 제1항에 있어서, 상기 가열저항기는 열교환기내 잉크의 등온선과 평행하고 열교환기내 잉크의 흐름방향과 수직한 주축을 갖는 선형어레이내에 배치되는 것을 특징으로 하는 열교환기.
  7. 제1항에 있어서, 상기 열교환기는 하나의 열활성 표면을 갖는 것을 특징으로 하는 열교환기.
  8. 잉크제트 프린터내의 잉크를 분사하는데 적합한 프린트카트리지를 하기 위한 냉각장치로서, 잉크방울을 상기 카트리지로부터 선택적으로 분사하여 상기 프린트 카트리지내에 열을 발생시키며, 상기 프린트 카트리지내에 관련 가열실을 갖는복수개의 가열저항기와, 상기 가열 저항기에서 발생된 열을 상기 잉크로 전달하기 위해서 상기 잉크 및 상기 가열저항기의 양자와 열적으로 연통가능하게 상기 프린트카트리지내에 제공되는 열교환기와, 상기 열교환기를 둘러싸는 복수개의 벽을 포함하는 프린트 카트리지 냉각장치에 있어서, 상기 벽은 상기 열교환기와 상기 가열저항기를 둘러싸는 거의 단열성 벽이어서, 상기 가열저항기에서 발생된 거의 모든 열 상기 가열실 근방의 잉크로 전달되도록 된 것을 특징으로 하는프린트카트리지 냉각장치.
  9. 제8항에 있어서, 상기 거의 단열성 벽은 단열성 물질로부터 제조되어서, 상기 프린트카트리지내에서 발생된 열은 잉크방울의 열에너지로서 상기 프린트카트리지로부터 배출되고 열 대류에 의해서는 상기 프린트 카트리지로부터 거의 배출되지 않도록 된 장치.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019930025669A 1992-11-30 1993-11-29 프린트카트리지 냉각장치 KR100225709B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/982,813 US5459498A (en) 1991-05-01 1992-11-30 Ink-cooled thermal ink jet printhead
US982,813 1992-11-30

Publications (2)

Publication Number Publication Date
KR940011212A true KR940011212A (ko) 1994-06-20
KR100225709B1 KR100225709B1 (ko) 1999-10-15

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US (2) US5459498A (ko)
EP (2) EP0600393B1 (ko)
JP (1) JP3408303B2 (ko)
KR (1) KR100225709B1 (ko)
CA (1) CA2103410C (ko)
DE (2) DE69320595T2 (ko)
ES (2) ES2135957T3 (ko)

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US5657061A (en) 1997-08-12
EP0771667A2 (en) 1997-05-07
DE69320595D1 (de) 1998-10-01
DE69326027D1 (de) 1999-09-16
CA2103410A1 (en) 1994-05-31
DE69320595T2 (de) 1999-05-06
EP0600393A2 (en) 1994-06-08
US5459498A (en) 1995-10-17
DE69326027T2 (de) 2000-03-02
ES2135957T3 (es) 1999-11-01
ES2119852T3 (es) 1998-10-16
JPH0796612A (ja) 1995-04-11
EP0771667B1 (en) 1999-08-11
KR100225709B1 (ko) 1999-10-15
EP0771667A3 (en) 1997-07-30
JP3408303B2 (ja) 2003-05-19
EP0600393B1 (en) 1998-08-26
CA2103410C (en) 2004-08-03
EP0600393A3 (en) 1994-12-14

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