JPS6487356A - Ink jet recording head - Google Patents

Ink jet recording head

Info

Publication number
JPS6487356A
JPS6487356A JP24629987A JP24629987A JPS6487356A JP S6487356 A JPS6487356 A JP S6487356A JP 24629987 A JP24629987 A JP 24629987A JP 24629987 A JP24629987 A JP 24629987A JP S6487356 A JPS6487356 A JP S6487356A
Authority
JP
Japan
Prior art keywords
ink
heat
generating part
beta
cross
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.)
Pending
Application number
JP24629987A
Other languages
Japanese (ja)
Inventor
Jiro Moriyama
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.)
Canon Inc
Original Assignee
Canon Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Canon Inc filed Critical Canon Inc
Priority to JP24629987A priority Critical patent/JPS6487356A/en
Publication of JPS6487356A publication Critical patent/JPS6487356A/en
Pending legal-status Critical Current

Links

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
    • B41J2/135—Nozzles
    • B41J2/14—Structure thereof only for on-demand ink jet heads
    • B41J2/14016—Structure of bubble jet print heads
    • B41J2/14032—Structure of the pressure chamber
    • B41J2/1404—Geometrical characteristics

Landscapes

  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Particle Formation And Scattering Control In Inkjet Printers (AREA)

Abstract

PURPOSE:To reduce power consumption of a device, improve printing quality and shorten time required for printing by making the same size of a cross-section area which crosses directly an ink flow direction of a liquid passage near a heat-generating part as that of an orifice side. CONSTITUTION:The cross-section area of a liquid passage which crosses directly an ink flow direction near a heat-generating part 5 is formed to match that of an orifice 1 side. When this taper angle is alpha deg.=30 deg., an angle formed by two lines which cross directly the wall surface from the center C of the heat- generating part 5 is beta deg.=150 deg.. When heat generation starts, bubbles are directed from the center C of the heat-generating part to all the directions under uniform pressure. The ratio of bubble energy which moves the ink back and forth is Ef:Eb=360-beta:beta=7:5. Therefore, the ratio R of contribution to ink discharge is R=Ef/(Ef+Eb)approx.=0.85. Consequently, the energy efficiency is improved by about 17% compared to a conventional device. Further, since the lengths of the ink flow passages on the effective orifice side and the ink supply side are equal, it is made possible to shorten the time required for ink supply to the flow passage 2 after ink discharge.
JP24629987A 1987-09-30 1987-09-30 Ink jet recording head Pending JPS6487356A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24629987A JPS6487356A (en) 1987-09-30 1987-09-30 Ink jet recording head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24629987A JPS6487356A (en) 1987-09-30 1987-09-30 Ink jet recording head

Publications (1)

Publication Number Publication Date
JPS6487356A true JPS6487356A (en) 1989-03-31

Family

ID=17146491

Family Applications (1)

Application Number Title Priority Date Filing Date
JP24629987A Pending JPS6487356A (en) 1987-09-30 1987-09-30 Ink jet recording head

Country Status (1)

Country Link
JP (1) JPS6487356A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0461939A2 (en) * 1990-06-15 1991-12-18 Canon Kabushiki Kaisha Ink jet recording apparatus using heat generating element
US5159354A (en) * 1990-01-17 1992-10-27 Canon Kabushiki Kaisha Liquid jet recording head having tapered liquid passages
EP0822080A2 (en) * 1996-07-31 1998-02-04 Canon Kabushiki Kaisha Bubble jet head and dubble jet apparatus employing the same
US5988798A (en) * 1991-01-17 1999-11-23 Canon Kabushiki Kaisha Fluid ejection head with multi-dimensional fluid path

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5159354A (en) * 1990-01-17 1992-10-27 Canon Kabushiki Kaisha Liquid jet recording head having tapered liquid passages
US6224197B1 (en) 1990-01-17 2001-05-01 Canon Kabushiki Kaisha Liquid jet recording head having tapered liquid passages
EP0461939A2 (en) * 1990-06-15 1991-12-18 Canon Kabushiki Kaisha Ink jet recording apparatus using heat generating element
US5726697A (en) * 1990-06-15 1998-03-10 Canon Kabushiki Kaisha Ink jet recording apparatus having an optimally-dimensioned ink jet head structure
US5988798A (en) * 1991-01-17 1999-11-23 Canon Kabushiki Kaisha Fluid ejection head with multi-dimensional fluid path
EP0822080A2 (en) * 1996-07-31 1998-02-04 Canon Kabushiki Kaisha Bubble jet head and dubble jet apparatus employing the same
EP0822080A3 (en) * 1996-07-31 1999-01-07 Canon Kabushiki Kaisha Bubble jet head and dubble jet apparatus employing the same
US6174049B1 (en) 1996-07-31 2001-01-16 Canon Kabushiki Kaisha Bubble jet head and bubble jet apparatus employing the same

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