JPS56146778A - Protecting system for head driving circuit in ink jet printing device - Google Patents

Protecting system for head driving circuit in ink jet printing device

Info

Publication number
JPS56146778A
JPS56146778A JP4993780A JP4993780A JPS56146778A JP S56146778 A JPS56146778 A JP S56146778A JP 4993780 A JP4993780 A JP 4993780A JP 4993780 A JP4993780 A JP 4993780A JP S56146778 A JPS56146778 A JP S56146778A
Authority
JP
Japan
Prior art keywords
piezoelectric vibrator
driving
circuit
phase difference
driving circuit
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.)
Granted
Application number
JP4993780A
Other languages
Japanese (ja)
Other versions
JPS6350067B2 (en
Inventor
Isokazu Furukawa
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.)
Ricoh Co Ltd
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
Application filed by Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP4993780A priority Critical patent/JPS56146778A/en
Publication of JPS56146778A publication Critical patent/JPS56146778A/en
Publication of JPS6350067B2 publication Critical patent/JPS6350067B2/ja
Granted 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
    • B41J2/015—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
    • B41J2/0451—Control methods or devices therefor, e.g. driver circuits, control circuits for detecting failure, e.g. clogging, malfunctioning actuator
    • 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
    • B41J2/04581—Control methods or devices therefor, e.g. driver circuits, control circuits controlling heads based on piezoelectric elements

Landscapes

  • Ink Jet (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)

Abstract

PURPOSE:To detect the contamination of a piezoelectric vibrator due to electroconductive ink and effect the protection of the captioned circuit by a method wherein a phase difference between an impressed voltage and an inlet current for the piezoelectric vibrator is detected. CONSTITUTION:A driving signal from a driving signal input terminal 11 is inputted into the piezoelectric vibrator 15 through the control section 12 and the amplifying section 13 of the driving to cause a piezoelectric vibration. In this case, a noninductive resistor 14 is inserted between the output terminal of the amplifying section 13 of the driving and the piezoelectric vibrator 15 while a phase difference between the voltage of both ends of the noninductive resistor 14 and the impressed voltage of the piezoelectric vibrator 15 is detected in an AND circuit 20 through level setting section 17, 19. When the piezoelectric vibrator 15 is contaminated by ink and the phase difference has become zero or a very small value, the amplifying section 13 for driving is damped or intercepted by the output from the AND circuit 20 and an indicating lamp 21 is lighted ON.
JP4993780A 1980-04-16 1980-04-16 Protecting system for head driving circuit in ink jet printing device Granted JPS56146778A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4993780A JPS56146778A (en) 1980-04-16 1980-04-16 Protecting system for head driving circuit in ink jet printing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4993780A JPS56146778A (en) 1980-04-16 1980-04-16 Protecting system for head driving circuit in ink jet printing device

Publications (2)

Publication Number Publication Date
JPS56146778A true JPS56146778A (en) 1981-11-14
JPS6350067B2 JPS6350067B2 (en) 1988-10-06

Family

ID=12844934

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4993780A Granted JPS56146778A (en) 1980-04-16 1980-04-16 Protecting system for head driving circuit in ink jet printing device

Country Status (1)

Country Link
JP (1) JPS56146778A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000355100A (en) * 1999-06-15 2000-12-26 Sony Corp Printer, nozzle inspecting method and printing method
CN104548289A (en) * 2014-12-16 2015-04-29 摩易国际股份有限公司 Atomizer abnormity automatic detection device with replaceable atomizing spray head

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000355100A (en) * 1999-06-15 2000-12-26 Sony Corp Printer, nozzle inspecting method and printing method
CN104548289A (en) * 2014-12-16 2015-04-29 摩易国际股份有限公司 Atomizer abnormity automatic detection device with replaceable atomizing spray head

Also Published As

Publication number Publication date
JPS6350067B2 (en) 1988-10-06

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