JPS5327038A - Protecting circuit for thermal head - Google Patents

Protecting circuit for thermal head

Info

Publication number
JPS5327038A
JPS5327038A JP10184476A JP10184476A JPS5327038A JP S5327038 A JPS5327038 A JP S5327038A JP 10184476 A JP10184476 A JP 10184476A JP 10184476 A JP10184476 A JP 10184476A JP S5327038 A JPS5327038 A JP S5327038A
Authority
JP
Japan
Prior art keywords
thermal head
protecting circuit
thermal element
energization
energizes
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
JP10184476A
Other languages
Japanese (ja)
Inventor
Takashi Ogawa
Kazunori Kimura
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 JP10184476A priority Critical patent/JPS5327038A/en
Publication of JPS5327038A publication Critical patent/JPS5327038A/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

Abstract

PURPOSE:To prevent the damage of a thermal element by changing the electric current which energizes a thermal element when the energization time fluctuates from a predetermined value, and by operating a protecting function when it is an extended time of energization.
JP10184476A 1976-08-25 1976-08-25 Protecting circuit for thermal head Pending JPS5327038A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10184476A JPS5327038A (en) 1976-08-25 1976-08-25 Protecting circuit for thermal head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10184476A JPS5327038A (en) 1976-08-25 1976-08-25 Protecting circuit for thermal head

Publications (1)

Publication Number Publication Date
JPS5327038A true JPS5327038A (en) 1978-03-13

Family

ID=14311353

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10184476A Pending JPS5327038A (en) 1976-08-25 1976-08-25 Protecting circuit for thermal head

Country Status (1)

Country Link
JP (1) JPS5327038A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5571579A (en) * 1978-11-24 1980-05-29 Oki Electric Ind Co Ltd Heat-sensitive recorder
JPS57140998A (en) * 1981-02-26 1982-08-31 Mitsubishi Heavy Ind Ltd Groove processing device
JPS59104956A (en) * 1982-12-09 1984-06-18 Tokyo Electric Co Ltd Failure detecting apparatus in wire drive circuit of dot printer

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5571579A (en) * 1978-11-24 1980-05-29 Oki Electric Ind Co Ltd Heat-sensitive recorder
JPS5720150B2 (en) * 1978-11-24 1982-04-27
JPS57140998A (en) * 1981-02-26 1982-08-31 Mitsubishi Heavy Ind Ltd Groove processing device
JPS59104956A (en) * 1982-12-09 1984-06-18 Tokyo Electric Co Ltd Failure detecting apparatus in wire drive circuit of dot printer

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