JPS555883A - Method of driving exothermic element - Google Patents

Method of driving exothermic element

Info

Publication number
JPS555883A
JPS555883A JP8000778A JP8000778A JPS555883A JP S555883 A JPS555883 A JP S555883A JP 8000778 A JP8000778 A JP 8000778A JP 8000778 A JP8000778 A JP 8000778A JP S555883 A JPS555883 A JP S555883A
Authority
JP
Japan
Prior art keywords
fluctuation
supply voltage
voltage
response
exothermic element
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
JP8000778A
Other languages
Japanese (ja)
Inventor
Shigeharu Muroi
Toru Tsunakawa
Toshio Tezuka
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.)
Nippon Signal Co Ltd
Original Assignee
Nippon Signal 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 Nippon Signal Co Ltd filed Critical Nippon Signal Co Ltd
Priority to JP8000778A priority Critical patent/JPS555883A/en
Publication of JPS555883A publication Critical patent/JPS555883A/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
    • B41J2/315—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material
    • B41J2/32—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material using thermal heads
    • B41J2/35—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material using thermal heads providing current or voltage to the thermal head
    • B41J2/355—Control circuits for heating-element selection
    • B41J2/36—Print density control
    • B41J2/37—Print density control by compensation for variation in current

Landscapes

  • Electronic Switches (AREA)

Abstract

PURPOSE:To protect a heat sensitive printer from coloring ununiformity with a simple and cheap device without using a stabilization circuit by detecting the fluctuation of supply voltage and controlling applying time in response to its detected signal. CONSTITUTION:In a heat sensitive printer using a DC power source heating head the fluctuation of supply voltage is detected and the applying time to an exothermic element is controlled in response to its detected signal. In reference to detection of voltage fluctuation it is preferrable to detect the difference between the supply voltage and the reference voltage using an operational amplifier and a non-linear element.
JP8000778A 1978-06-30 1978-06-30 Method of driving exothermic element Pending JPS555883A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8000778A JPS555883A (en) 1978-06-30 1978-06-30 Method of driving exothermic element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8000778A JPS555883A (en) 1978-06-30 1978-06-30 Method of driving exothermic element

Publications (1)

Publication Number Publication Date
JPS555883A true JPS555883A (en) 1980-01-17

Family

ID=13706263

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8000778A Pending JPS555883A (en) 1978-06-30 1978-06-30 Method of driving exothermic element

Country Status (1)

Country Link
JP (1) JPS555883A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5732107A (en) * 1980-08-05 1982-02-20 Mitsubishi Electric Corp Power amplifying circuit
JPS585280A (en) * 1981-07-03 1983-01-12 Canon Inc Thermal head printer
JPS5812763A (en) * 1981-07-17 1983-01-24 Canon Inc Recorder
JPS59211305A (en) * 1983-05-16 1984-11-30 Nec Corp Bias circuit
JPS6079823U (en) * 1983-11-08 1985-06-03 三洋電機株式会社 differential amplifier circuit
JPH0295645U (en) * 1989-01-10 1990-07-30

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5732107A (en) * 1980-08-05 1982-02-20 Mitsubishi Electric Corp Power amplifying circuit
JPS585280A (en) * 1981-07-03 1983-01-12 Canon Inc Thermal head printer
JPH0118872B2 (en) * 1981-07-03 1989-04-07 Canon Kk
JPS5812763A (en) * 1981-07-17 1983-01-24 Canon Inc Recorder
JPH0118871B2 (en) * 1981-07-17 1989-04-07 Canon Kk
JPS59211305A (en) * 1983-05-16 1984-11-30 Nec Corp Bias circuit
JPH0349207B2 (en) * 1983-05-16 1991-07-26 Nippon Electric Co
JPS6079823U (en) * 1983-11-08 1985-06-03 三洋電機株式会社 differential amplifier circuit
JPH0295645U (en) * 1989-01-10 1990-07-30

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