JPS5640572A - Printing density control circuit for thermal printer - Google Patents

Printing density control circuit for thermal printer

Info

Publication number
JPS5640572A
JPS5640572A JP11695279A JP11695279A JPS5640572A JP S5640572 A JPS5640572 A JP S5640572A JP 11695279 A JP11695279 A JP 11695279A JP 11695279 A JP11695279 A JP 11695279A JP S5640572 A JPS5640572 A JP S5640572A
Authority
JP
Japan
Prior art keywords
printing density
power source
comparator
circuit
source voltage
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
JP11695279A
Other languages
English (en)
Inventor
Takashi Seino
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.)
Seiko Instruments Inc
Original Assignee
Seiko Instruments Inc
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 Seiko Instruments Inc filed Critical Seiko Instruments Inc
Priority to JP11695279A priority Critical patent/JPS5640572A/ja
Publication of JPS5640572A publication Critical patent/JPS5640572A/ja
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)
JP11695279A 1979-09-12 1979-09-12 Printing density control circuit for thermal printer Pending JPS5640572A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11695279A JPS5640572A (en) 1979-09-12 1979-09-12 Printing density control circuit for thermal printer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11695279A JPS5640572A (en) 1979-09-12 1979-09-12 Printing density control circuit for thermal printer

Publications (1)

Publication Number Publication Date
JPS5640572A true JPS5640572A (en) 1981-04-16

Family

ID=14699790

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11695279A Pending JPS5640572A (en) 1979-09-12 1979-09-12 Printing density control circuit for thermal printer

Country Status (1)

Country Link
JP (1) JPS5640572A (ja)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5829445U (ja) * 1981-08-18 1983-02-25 富士通株式会社 印字タイミング調整回路
JPS58155238U (ja) * 1982-04-09 1983-10-17 株式会社東芝 サ−マルプリンタの制御装置
US4442342A (en) * 1981-05-01 1984-04-10 Sharp Kabushiki Kaisha Thermal printer with print density control
JPS59187452U (ja) * 1983-05-30 1984-12-12 株式会社富士通ゼネラル 印字装置

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4442342A (en) * 1981-05-01 1984-04-10 Sharp Kabushiki Kaisha Thermal printer with print density control
JPS5829445U (ja) * 1981-08-18 1983-02-25 富士通株式会社 印字タイミング調整回路
JPH0425342Y2 (ja) * 1981-08-18 1992-06-17
JPS58155238U (ja) * 1982-04-09 1983-10-17 株式会社東芝 サ−マルプリンタの制御装置
JPS59187452U (ja) * 1983-05-30 1984-12-12 株式会社富士通ゼネラル 印字装置
JPH0351162Y2 (ja) * 1983-05-30 1991-10-31

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