DK1567351T3 - Termisk blækstråleprinthoved med symmetrisk bobledannelse - Google Patents

Termisk blækstråleprinthoved med symmetrisk bobledannelse

Info

Publication number
DK1567351T3
DK1567351T3 DK03811693.5T DK03811693T DK1567351T3 DK 1567351 T3 DK1567351 T3 DK 1567351T3 DK 03811693 T DK03811693 T DK 03811693T DK 1567351 T3 DK1567351 T3 DK 1567351T3
Authority
DK
Denmark
Prior art keywords
heater element
ink jet
print head
jet print
bubble formation
Prior art date
Application number
DK03811693.5T
Other languages
English (en)
Inventor
Kia Silverbrook
Angus John North
Gregory John Mcavoy
Original Assignee
Silverbrook Res Pty Ltd
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 Silverbrook Res Pty Ltd filed Critical Silverbrook Res Pty Ltd
Application granted granted Critical
Publication of DK1567351T3 publication Critical patent/DK1567351T3/da

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005Typewriters 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
    • B41J2/01Ink jet
    • B41J2/135Nozzles
    • B41J2/16Production of nozzles
    • B41J2/1601Production of bubble jet print heads
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005Typewriters 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
    • B41J2/01Ink jet
    • B41J2/135Nozzles
    • B41J2/14Structure thereof only for on-demand ink jet heads
    • B41J2/14016Structure of bubble jet print heads
    • B41J2/14032Structure of the pressure chamber
    • B41J2/1404Geometrical characteristics
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005Typewriters 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
    • B41J2/01Ink jet
    • B41J2/135Nozzles
    • B41J2/14Structure thereof only for on-demand ink jet heads
    • B41J2/14016Structure of bubble jet print heads
    • B41J2/14088Structure of heating means
    • B41J2/14112Resistive element
    • B41J2/1412Shape
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005Typewriters 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
    • B41J2/01Ink jet
    • B41J2/135Nozzles
    • B41J2/16Production of nozzles
    • B41J2/1621Manufacturing processes
    • B41J2/1626Manufacturing processes etching
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005Typewriters 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
    • B41J2/01Ink jet
    • B41J2/135Nozzles
    • B41J2/16Production of nozzles
    • B41J2/1621Manufacturing processes
    • B41J2/1626Manufacturing processes etching
    • B41J2/1628Manufacturing processes etching dry etching
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005Typewriters 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
    • B41J2/01Ink jet
    • B41J2/135Nozzles
    • B41J2/16Production of nozzles
    • B41J2/1621Manufacturing processes
    • B41J2/1631Manufacturing processes photolithography
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005Typewriters 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
    • B41J2/01Ink jet
    • B41J2/135Nozzles
    • B41J2/16Production of nozzles
    • B41J2/1621Manufacturing processes
    • B41J2/1637Manufacturing processes molding
    • B41J2/1639Manufacturing processes molding sacrificial molding
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005Typewriters 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
    • B41J2/01Ink jet
    • B41J2/135Nozzles
    • B41J2/16Production of nozzles
    • B41J2/1621Manufacturing processes
    • B41J2/164Manufacturing processes thin film formation
    • B41J2/1642Manufacturing processes thin film formation thin film formation by CVD [chemical vapor deposition]
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005Typewriters 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
    • B41J2/01Ink jet
    • B41J2/135Nozzles
    • B41J2/14Structure thereof only for on-demand ink jet heads
    • B41J2002/14475Structure thereof only for on-demand ink jet heads characterised by nozzle shapes or number of orifices per chamber
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005Typewriters 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
    • B41J2/01Ink jet
    • B41J2/135Nozzles
    • B41J2/14Structure thereof only for on-demand ink jet heads
    • B41J2002/14491Electrical connection
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2202/00Embodiments of or processes related to ink-jet or thermal heads
    • B41J2202/01Embodiments of or processes related to ink-jet heads
    • B41J2202/20Modules

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Particle Formation And Scattering Control In Inkjet Printers (AREA)
  • Ink Jet (AREA)
  • Ink Jet Recording Methods And Recording Media Thereof (AREA)
  • Adhesives Or Adhesive Processes (AREA)
DK03811693.5T 2002-11-23 2003-11-17 Termisk blækstråleprinthoved med symmetrisk bobledannelse DK1567351T3 (da)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/303,433 US6672710B1 (en) 2002-11-23 2002-11-23 Thermal ink jet printhead with symmetric bubble formation
PCT/AU2003/001515 WO2004048109A1 (en) 2002-11-23 2003-11-17 Thermal ink jet printhead with symmetric bubble formation

Publications (1)

Publication Number Publication Date
DK1567351T3 true DK1567351T3 (da) 2011-04-11

Family

ID=29735839

Family Applications (1)

Application Number Title Priority Date Filing Date
DK03811693.5T DK1567351T3 (da) 2002-11-23 2003-11-17 Termisk blækstråleprinthoved med symmetrisk bobledannelse

Country Status (11)

Country Link
US (4) US6672710B1 (da)
EP (1) EP1567351B1 (da)
JP (1) JP2006507156A (da)
KR (1) KR20050085031A (da)
CN (1) CN100386202C (da)
AT (1) ATE495016T1 (da)
AU (1) AU2003275799B2 (da)
CA (1) CA2506733C (da)
DE (1) DE60335736D1 (da)
DK (1) DK1567351T3 (da)
WO (1) WO2004048109A1 (da)

Families Citing this family (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6672710B1 (en) * 2002-11-23 2004-01-06 Silverbrook Research Pty Ltd Thermal ink jet printhead with symmetric bubble formation
US6755509B2 (en) * 2002-11-23 2004-06-29 Silverbrook Research Pty Ltd Thermal ink jet printhead with suspended beam heater
EP1945457A4 (en) * 2005-10-10 2010-01-06 Silverbrook Res Pty Ltd LOW LOSS ELECTRODE CONNECTION FOR INKJET PRINT HEAD
AU2005337420B2 (en) * 2005-10-10 2009-10-29 Silverbrook Research Pty Ltd Method of fabricating suspended beam in a mems process
US7708387B2 (en) * 2005-10-11 2010-05-04 Silverbrook Research Pty Ltd Printhead with multiple actuators in each chamber
US7465041B2 (en) * 2005-10-11 2008-12-16 Silverbrook Research Pty Ltd Inkjet printhead with inlet priming feature
US7303930B2 (en) * 2005-10-11 2007-12-04 Silverbrook Research Pty Ltd Method of fabricating suspended beam in a MEMS process
US7845765B2 (en) 2005-10-11 2010-12-07 Silverbrook Research Pty Ltd Inkjet printers with elongate chambers, nozzles and heaters
US20070080132A1 (en) * 2005-10-11 2007-04-12 Silverbrook Research Pty Ltd Method of fabricating inkjet nozzle chambers having sidewall entrance
US7712876B2 (en) * 2005-10-11 2010-05-11 Silverbrook Research Pty Ltd Inkjet printhead with opposing actuator electrode polarities
US7510267B2 (en) * 2005-10-11 2009-03-31 Silverbrook Research Pty Ltd Reduced stiction printhead surface
US7464466B2 (en) * 2005-10-11 2008-12-16 Silverbrook Research Pty Ltd Method of fabricating inkjet nozzle chambers having filter structures
US7464465B2 (en) * 2005-10-11 2008-12-16 Silverbrook Research Pty Ltd Method of forming low-stiction nozzle plate for an inkjet printhead
US7401910B2 (en) * 2005-10-11 2008-07-22 Silverbrook Research Pty Ltd Inkjet printhead with bubble trap
US7465037B2 (en) * 2005-10-11 2008-12-16 Kia Silverbrook Printhead with rectifying valve at ink chamber inlet
US7744195B2 (en) * 2005-10-11 2010-06-29 Silverbrook Research Pty Ltd Low loss electrode connection for inkjet printhead
US7712884B2 (en) 2005-10-11 2010-05-11 Silverbrook Research Pty Ltd High density thermal ink jet printhead
US7470010B2 (en) * 2005-10-11 2008-12-30 Silverbrook Research Pty Ltd Inkjet printhead with multiple ink inlet flow paths
US7465032B2 (en) * 2005-10-11 2008-12-16 Silverbrook Research Pty Ltd. Printhead with inlet filter for ink chamber
US7401405B2 (en) * 2005-10-11 2008-07-22 Silverbrook Research Pty Ltd Method of fabricating inkjet nozzles having associated ink priming features
US7753496B2 (en) * 2005-10-11 2010-07-13 Silverbrook Research Pty Ltd Inkjet printhead with multiple chambers and multiple nozzles for each drive circuit
US7645026B2 (en) * 2005-10-11 2010-01-12 Silverbrook Research Pty Ltd Inkjet printhead with multi-nozzle chambers
US7322681B2 (en) * 2005-10-11 2008-01-29 Silverbrook Research Pty Ltd Printhead with ink feed to chamber via adjacent chamber
US7401890B2 (en) * 2005-10-11 2008-07-22 Silverbrook Research Pty Ltd Intercolour surface barriers in multi colour inkjet printhead
US7857428B2 (en) * 2005-10-11 2010-12-28 Silverbrook Research Pty Ltd Printhead with side entry ink chamber
US7669751B2 (en) * 2007-09-25 2010-03-02 Silverbrook Research Pty Ltd Method of forming low profile wire bonds between integrated circuits dies and printed circuit boards
US8063318B2 (en) * 2007-09-25 2011-11-22 Silverbrook Research Pty Ltd Electronic component with wire bonds in low modulus fill encapsulant
US7875504B2 (en) * 2007-09-25 2011-01-25 Silverbrook Research Pty Ltd Method of adhering wire bond loops to reduce loop height
US7741720B2 (en) * 2007-09-25 2010-06-22 Silverbrook Research Pty Ltd Electronic device with wire bonds adhered between integrated circuits dies and printed circuit boards
US20090079097A1 (en) * 2007-09-25 2009-03-26 Silverbrook Research Pty Ltd Electronic component with wire bonds in low modulus fill encapsulant
US7658977B2 (en) 2007-10-24 2010-02-09 Silverbrook Research Pty Ltd Method of fabricating inkjet printhead having planar nozzle plate
US8296937B2 (en) * 2008-08-19 2012-10-30 Silverbrook Research Pty Ltd Wafer positioning system
US8701276B2 (en) * 2008-08-19 2014-04-22 Zamtec Ltd Placement head for a die placing assembly
US8017450B2 (en) * 2008-09-25 2011-09-13 Silverbrook Research Pty Ltd Method of forming assymetrical encapsulant bead
US7915091B2 (en) * 2008-09-25 2011-03-29 Silverbrook Research Pty Ltd Method of controlling satellite drops from an encapsulant jetter
US8322207B2 (en) * 2008-09-25 2012-12-04 Silverbrook Research Pty Ltd Tack adhesion testing device

Family Cites Families (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US467945A (en) * 1892-02-02 Car for use upon inclined railways
SE349676B (da) 1971-01-11 1972-10-02 N Stemme
JPS5557477A (en) 1978-10-26 1980-04-28 Canon Inc Recording media discharge recording device by thermal energy
JPS6294347A (ja) 1985-10-22 1987-04-30 Ricoh Seiki Kk 熱インクジエツトプリントヘツド
US4647945A (en) * 1986-02-06 1987-03-03 Tokyo Electric Co., Ltd. Image recording method and its apparatus
US4965594A (en) * 1986-02-28 1990-10-23 Canon Kabushiki Kaisha Liquid jet recording head with laminated heat resistive layers on a support member
EP0244214B1 (en) 1986-04-28 1991-07-10 Hewlett-Packard Company Thermal ink jet printhead
US5030971B1 (en) * 1989-11-29 2000-11-28 Xerox Corp Precisely aligned mono- or multi-color roofshooter type printhead
AU657930B2 (en) * 1991-01-30 1995-03-30 Canon Kabushiki Kaisha Nozzle structures for bubblejet print devices
US6019457A (en) * 1991-01-30 2000-02-01 Canon Information Systems Research Australia Pty Ltd. Ink jet print device and print head or print apparatus using the same
JPH04257450A (ja) * 1991-02-13 1992-09-11 Sharp Corp インクジェットプリンターヘッドおよびその製造方法
JPH05131636A (ja) 1991-11-11 1993-05-28 Canon Inc 液体噴射記録ヘツドの製造方法および液体噴射記録ヘツド
FR2700835B1 (fr) * 1993-01-26 1995-04-21 Technip Cie Procédé et installation de production de neige.
JP3157964B2 (ja) 1993-08-30 2001-04-23 キヤノン株式会社 インクジェット記録ヘッド、該記録ヘッドを備えたインクジェット式記録装置
DE69617540T2 (de) * 1995-06-28 2002-05-23 Canon Kk Mikrogerät, damit ausgerüsteter Flüssigkeitsstrahlaufzeichnungskopf, Flüssigkeitsstrahlaufzeichnungsvorrichtung mit diesem Flüssigkeitsstrahlaufzeichnungskopf
US5706041A (en) * 1996-03-04 1998-01-06 Xerox Corporation Thermal ink-jet printhead with a suspended heating element in each ejector
JPH1016223A (ja) * 1996-06-28 1998-01-20 Seiko Instr Inc インクジェット記録装置並びに該装置に用いる記録ヘッド及びその製造方法
JPH1017803A (ja) * 1996-07-08 1998-01-20 Fuji Xerox Co Ltd インクジェット記録用インク及びインクジェット記録方法
US6183067B1 (en) 1997-01-21 2001-02-06 Agilent Technologies Inkjet printhead and fabrication method for integrating an actuator and firing chamber
US6557977B1 (en) * 1997-07-15 2003-05-06 Silverbrook Research Pty Ltd Shape memory alloy ink jet printing mechanism
US6322201B1 (en) 1997-10-22 2001-11-27 Hewlett-Packard Company Printhead with a fluid channel therethrough
JP3619036B2 (ja) 1997-12-05 2005-02-09 キヤノン株式会社 インクジェット記録ヘッドの製造方法
JP2000127397A (ja) 1998-10-28 2000-05-09 Casio Comput Co Ltd サーマルインクジェットヘッド
US6443564B1 (en) * 2000-11-13 2002-09-03 Hewlett-Packard Company Asymmetric fluidic techniques for ink-jet printheads
US6561627B2 (en) 2000-11-30 2003-05-13 Eastman Kodak Company Thermal actuator
KR100506079B1 (ko) 2000-12-05 2005-08-04 삼성전자주식회사 버블젯 방식의 잉크젯 프린트 헤드
US6543879B1 (en) * 2001-10-31 2003-04-08 Hewlett-Packard Company Inkjet printhead assembly having very high nozzle packing density
US6755509B2 (en) * 2002-11-23 2004-06-29 Silverbrook Research Pty Ltd Thermal ink jet printhead with suspended beam heater
US6672710B1 (en) * 2002-11-23 2004-01-06 Silverbrook Research Pty Ltd Thermal ink jet printhead with symmetric bubble formation

Also Published As

Publication number Publication date
JP2006507156A (ja) 2006-03-02
WO2004048109A1 (en) 2004-06-10
US7645029B2 (en) 2010-01-12
US20080297566A1 (en) 2008-12-04
AU2003275799B2 (en) 2006-05-25
EP1567351A1 (en) 2005-08-31
DE60335736D1 (de) 2011-02-24
CN100386202C (zh) 2008-05-07
CA2506733C (en) 2009-11-10
EP1567351A4 (en) 2008-07-23
US20060038857A1 (en) 2006-02-23
CN1713991A (zh) 2005-12-28
AU2003275799A1 (en) 2004-06-18
ATE495016T1 (de) 2011-01-15
CA2506733A1 (en) 2004-06-10
US6672710B1 (en) 2004-01-06
US7967420B2 (en) 2011-06-28
US20100091072A1 (en) 2010-04-15
EP1567351B1 (en) 2011-01-12
US7429097B2 (en) 2008-09-30
KR20050085031A (ko) 2005-08-29

Similar Documents

Publication Publication Date Title
DK1567351T3 (da) Termisk blækstråleprinthoved med symmetrisk bobledannelse
ATE495897T1 (de) Wärmetintenstrahldruckkopf mit aufgehängterträgerheizvorrichtung
DE60332381D1 (de) Tintenstrahldruckkopfmit nahtlos überzogener heizvorrichtung
ATE495015T1 (de) Thermotintenstrahldruckkopfmit geringer heizermasse
DE60231456D1 (de) Flüssigkeitsausstosskopf
DE60231154D1 (de) Schieberbetätigung in einem druckkopfchip für einen tintenstrahldruckkopf
ATE249341T1 (de) Tintenstrahldruckkopf und tintenstrahlaufzeichnungsvorrichtung
DE602004005649D1 (de) Tintenstrahldruckkopf und Tintenstrahldrucker
ATE501856T1 (de) Übereinander angeordnete heizungselemente in einem thermo-tintenstrahl-druckkopf
DE60322293D1 (de) Tintenstrahlkopf und Tintenstrahldrucker
ATE265323T1 (de) Tintenstrahldruckkopf
ATE367266T1 (de) Herstellungsverfahren für einen tintenstrahldruckkopf mit bewegender düse und externem betätiger
JP3490402B2 (ja) 電気−熱変換方式のインクジェットプリントヘッド
EP0855275A3 (en) Ink-jet recording head
JP2006175822A5 (da)
DE60336258D1 (de) Selbstkühlender thermotintenstrahldruckkopf
ATE381990T1 (de) Tintenstrahldruckkopf mit sich bewegender düse und einlassbeschränkung
DE60335822D1 (de) Thermotintenstrahldruckkopfmit kavitationsspalt
JPS6250150A (ja) インクジエツト記録装置
TW200600348A (en) Inkjet printhead
JPS61110559A (ja) インクジエツト記録装置
TWI277524B (en) Print chip with an ink passage structure
JP2001287376A5 (da)
KR100293729B1 (ko) 2점발열형잉크제트프린트헤드
JPS57156267A (en) Ink jet recording device