JPS57156280A - Thermal printer - Google Patents

Thermal printer

Info

Publication number
JPS57156280A
JPS57156280A JP56041277A JP4127781A JPS57156280A JP S57156280 A JPS57156280 A JP S57156280A JP 56041277 A JP56041277 A JP 56041277A JP 4127781 A JP4127781 A JP 4127781A JP S57156280 A JPS57156280 A JP S57156280A
Authority
JP
Japan
Prior art keywords
density
cpu5
head
print
supplies
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
JP56041277A
Other languages
Japanese (ja)
Inventor
Junji Kono
Masayoshi Fukui
Masanori Kitaguchi
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.)
Shinko Electric Co Ltd
Original Assignee
Shinko 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 Shinko Electric Co Ltd filed Critical Shinko Electric Co Ltd
Priority to JP56041277A priority Critical patent/JPS57156280A/en
Publication of JPS57156280A publication Critical patent/JPS57156280A/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
    • B41J2/365—Print density control by compensation for variation in temperature

Landscapes

  • Fax Reproducing Arrangements (AREA)
  • Electronic Switches (AREA)

Abstract

PURPOSE:To improve a thermal printer so that it is capable of printing characters of the same density even if printing conditions such as ambient, environmental and thermal conditions vary, and lengthen the life of its thermal print head by providing a density adjusting means which changes over the density of printed characters. CONSTITUTION:When a density adjusting switch 1 is set to the position of an optimum print density, an earth voltage is supplied to an input interface 4 through terminals 1a, 1b or 1c corresponding to the position. In response to a read signal Rc from a CPU5, the input interface 4 generates density setting data B1 corresponding to the set position of the switch 1 and supplies them to the CPU5. Based on print density data B3 from the CPU5 to be controlled in accordance with a program of a memory 6 and a write signal WC1, a head drive circuit 7 generates a head drive signal HD and supplies it to a head main body 8, and on the other hand, a head control circuit 9, based on serial print data B4 from the CPU5 and a write signal WC2, generates parallel print data and supplies them to the main body 8 which performs printing by causing desired elements to generate heat.
JP56041277A 1981-03-20 1981-03-20 Thermal printer Pending JPS57156280A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56041277A JPS57156280A (en) 1981-03-20 1981-03-20 Thermal printer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56041277A JPS57156280A (en) 1981-03-20 1981-03-20 Thermal printer

Publications (1)

Publication Number Publication Date
JPS57156280A true JPS57156280A (en) 1982-09-27

Family

ID=12603942

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56041277A Pending JPS57156280A (en) 1981-03-20 1981-03-20 Thermal printer

Country Status (1)

Country Link
JP (1) JPS57156280A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6283637U (en) * 1985-11-18 1987-05-28
KR100489182B1 (en) * 1997-07-05 2005-09-02 삼성전자주식회사 How to adjust factor of inkjet printer

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6283637U (en) * 1985-11-18 1987-05-28
JPH056131Y2 (en) * 1985-11-18 1993-02-17
KR100489182B1 (en) * 1997-07-05 2005-09-02 삼성전자주식회사 How to adjust factor of inkjet printer

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