JPS5621877A - Thermal head - Google Patents

Thermal head

Info

Publication number
JPS5621877A
JPS5621877A JP9607979A JP9607979A JPS5621877A JP S5621877 A JPS5621877 A JP S5621877A JP 9607979 A JP9607979 A JP 9607979A JP 9607979 A JP9607979 A JP 9607979A JP S5621877 A JPS5621877 A JP S5621877A
Authority
JP
Japan
Prior art keywords
heat generating
thyristor
conduction
generating elements
heat
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
JP9607979A
Other languages
Japanese (ja)
Other versions
JPS5936877B2 (en
Inventor
Yuji Oba
Takashi Saito
Hiroshi Ochi
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 Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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 Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP54096079A priority Critical patent/JPS5936877B2/en
Publication of JPS5621877A publication Critical patent/JPS5621877A/en
Publication of JPS5936877B2 publication Critical patent/JPS5936877B2/en
Expired 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
    • B41J2/375—Protection arrangements against overheating

Landscapes

  • Electronic Switches (AREA)

Abstract

PURPOSE:To lessen current necessary to drive numerous heat generating elements simultaneously through switch-operated serial connection to power source of more than one out of heat generating elements. CONSTITUTION:Gate turn off thyristor 10 for power switch on and off is put into 'ON' condition. Gate signal is given to the thyristor 5 for picture signal input distributed in parallel to heat generating element 1 to generate heat so that only selected thyristor 5 is not kept in conduction. Then, thyristor 6 for record timing adjustment is kept in conduction to heat generating element 1 in parallel with selected thyristor 5. Thyristor 10 is kept out of conduction to stop heat generation of heat generating element and keep all the thyristors 5 out of conduction. It is possible to heat all the necessary heat generating elements simultaneously. Even in the case of increased heat generating elements, current to be supplied by power source 8 can be saved to the level required by about 2 heat generating elements.
JP54096079A 1979-07-30 1979-07-30 heat head Expired JPS5936877B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54096079A JPS5936877B2 (en) 1979-07-30 1979-07-30 heat head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54096079A JPS5936877B2 (en) 1979-07-30 1979-07-30 heat head

Publications (2)

Publication Number Publication Date
JPS5621877A true JPS5621877A (en) 1981-02-28
JPS5936877B2 JPS5936877B2 (en) 1984-09-06

Family

ID=14155382

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54096079A Expired JPS5936877B2 (en) 1979-07-30 1979-07-30 heat head

Country Status (1)

Country Link
JP (1) JPS5936877B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58151266A (en) * 1982-03-04 1983-09-08 Tokyo Electric Co Ltd Thermal head

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60227871A (en) * 1984-12-03 1985-11-13 株式会社　四国製作所 Vertical grain sortor

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51141641A (en) * 1975-06-02 1976-12-06 Oki Electric Ind Co Ltd Heat printing apparatus

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51141641A (en) * 1975-06-02 1976-12-06 Oki Electric Ind Co Ltd Heat printing apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58151266A (en) * 1982-03-04 1983-09-08 Tokyo Electric Co Ltd Thermal head

Also Published As

Publication number Publication date
JPS5936877B2 (en) 1984-09-06

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