JPS57167273A - Printing head - Google Patents

Printing head

Info

Publication number
JPS57167273A
JPS57167273A JP5358981A JP5358981A JPS57167273A JP S57167273 A JPS57167273 A JP S57167273A JP 5358981 A JP5358981 A JP 5358981A JP 5358981 A JP5358981 A JP 5358981A JP S57167273 A JPS57167273 A JP S57167273A
Authority
JP
Japan
Prior art keywords
capacity
chamber
pressure generating
generating chamber
nozzle hole
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
JP5358981A
Other languages
Japanese (ja)
Inventor
Hiromichi Fukuchi
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
Nippon Electric Co 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP5358981A priority Critical patent/JPS57167273A/en
Publication of JPS57167273A publication Critical patent/JPS57167273A/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
    • B41J2/14201—Structure of print heads with piezoelectric elements
    • B41J2/14233—Structure of print heads with piezoelectric elements of film type, deformed by bending and disposed on a diaphragm

Landscapes

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

Abstract

PURPOSE:To provide an on-demand type printing head which has been improved not to generate satellite spots even if ink jetting speed increases by providing a capacity chamber having a small capacity between a jet nozzle hole and a pressure generating chamber. CONSTITUTION:Both ends of a pressure generating chamber 12 which generates pressure for making ink droplets are narrowed down by small diaphragms A1, A2 and a capacity chamber 13 of which capacity is very small comparing with the pressure generating chamber 13 is provided between the diaphragm A1 and a jet nozzle 11. When electric signals are applied to a piezoelectric vibrator 16, a flexible plate 15 deflects and generates shock waves in the pressure generating chamber 12. Shock waves are conveyed to the capacity chamber 13 through the diaphragm A1 where high frequency components are removed, therefore an ink flow of less disturbance is spouted from the jet nozzle hole 11. Moreover, even if air enters through the nozzle hole 11, it is prevented from entering the pressure generating chamber 12 as such air is caused to stay in the capacity chamber 13.
JP5358981A 1981-04-09 1981-04-09 Printing head Pending JPS57167273A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5358981A JPS57167273A (en) 1981-04-09 1981-04-09 Printing head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5358981A JPS57167273A (en) 1981-04-09 1981-04-09 Printing head

Publications (1)

Publication Number Publication Date
JPS57167273A true JPS57167273A (en) 1982-10-15

Family

ID=12947045

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5358981A Pending JPS57167273A (en) 1981-04-09 1981-04-09 Printing head

Country Status (1)

Country Link
JP (1) JPS57167273A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5751317A (en) * 1996-04-15 1998-05-12 Xerox Corporation Thermal ink-jet printhead with an optimized fluid flow channel in each ejector
US5969738A (en) * 1995-12-28 1999-10-19 Fuji Xerox Co., Ltd. Ink jet printer and ink jet recording unit
WO2008033371A1 (en) * 2006-09-14 2008-03-20 Hewlett-Packard Development Company, L.P. Fluid ejection device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5969738A (en) * 1995-12-28 1999-10-19 Fuji Xerox Co., Ltd. Ink jet printer and ink jet recording unit
US5751317A (en) * 1996-04-15 1998-05-12 Xerox Corporation Thermal ink-jet printhead with an optimized fluid flow channel in each ejector
WO2008033371A1 (en) * 2006-09-14 2008-03-20 Hewlett-Packard Development Company, L.P. Fluid ejection device
US7914125B2 (en) 2006-09-14 2011-03-29 Hewlett-Packard Development Company, L.P. Fluid ejection device with deflective flexible membrane

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