JPS56146763A - Mechanism for removing blocking of head for ink jet printer - Google Patents

Mechanism for removing blocking of head for ink jet printer

Info

Publication number
JPS56146763A
JPS56146763A JP4993580A JP4993580A JPS56146763A JP S56146763 A JPS56146763 A JP S56146763A JP 4993580 A JP4993580 A JP 4993580A JP 4993580 A JP4993580 A JP 4993580A JP S56146763 A JPS56146763 A JP S56146763A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
head
ink
temperature
section
oscillation
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
JP4993580A
Inventor
Isokazu Furukawa
Original Assignee
Ricoh 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

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, e.g. INK-JET PRINTERS, THERMAL PRINTERS, 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
    • B41J2/165—Preventing or detecting of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
    • B41J2/16579—Detection means therefor, e.g. for nozzle clogging

Abstract

PURPOSE:To prevent further temperature rise at the printing head and pressurize ink to remove dust or the like thereat and restore the head to the initial state automatically by a method wherein a temperature detecting element is provided on the ink jet head to shut off the oscillation of the head upon temperature rise due to the blocking of the head. CONSTITUTION:Ink in an ink reservoir 12 is fed by pressure to the printing head 1 and is injected by oscillating a piezo oscillator 2 with an oscillating section 16. The droplet of ink is charged electrically by a charging electrode 5 and is deflected by deflecting electrodes 7a, 7b to print on printing paper 10. On the other hand, a heat sensitive element 3 detects the temperature of the oscillator 2 and the signal thereof is compared with a standard voltage at a comparating section 14. If it is higher than a standard value, the signal is sent into a command controlling section 19 to output respective control signals for a relay 18 and a motor 21. By these signals, the oscillation is shut off to reduce the temperature of the oscillator 2 and the oscillation is started again when the temperature is arrived within a safety temperature range. On the other hand, the number of revolutions of the motor 21 is increased through a motor control section 20 and the pressure of the ink is increased to remove dust or the like which is blocking the head 1.
JP4993580A 1980-04-16 1980-04-16 Mechanism for removing blocking of head for ink jet printer Pending JPS56146763A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4993580A JPS56146763A (en) 1980-04-16 1980-04-16 Mechanism for removing blocking of head for ink jet printer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4993580A JPS56146763A (en) 1980-04-16 1980-04-16 Mechanism for removing blocking of head for ink jet printer

Publications (1)

Publication Number Publication Date
JPS56146763A true true JPS56146763A (en) 1981-11-14

Family

ID=12844871

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4993580A Pending JPS56146763A (en) 1980-04-16 1980-04-16 Mechanism for removing blocking of head for ink jet printer

Country Status (1)

Country Link
JP (1) JPS56146763A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60101054A (en) * 1983-11-08 1985-06-05 Canon Inc Liquid jet recorder
JPS61206658A (en) * 1985-03-12 1986-09-12 Canon Inc Ink jet recording apparatus
EP0442705A2 (en) * 1990-02-13 1991-08-21 Canon Kabushiki Kaisha Liquid ejection recording apparatus and control method
CN104842668A (en) * 2015-06-11 2015-08-19 上海威侃电子材料有限公司 Control method for printing system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60101054A (en) * 1983-11-08 1985-06-05 Canon Inc Liquid jet recorder
JPH0519468B2 (en) * 1983-11-08 1993-03-16 Canon Kk
JPS61206658A (en) * 1985-03-12 1986-09-12 Canon Inc Ink jet recording apparatus
EP0442705A2 (en) * 1990-02-13 1991-08-21 Canon Kabushiki Kaisha Liquid ejection recording apparatus and control method
US5502469A (en) * 1990-02-13 1996-03-26 Canon Kabushiki Kaisha Ink jet recording apparatus with detection of rate of temperature
CN104842668A (en) * 2015-06-11 2015-08-19 上海威侃电子材料有限公司 Control method for printing system

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