JPS5682277A - Driving method of heat sensitive recording head for color print - Google Patents

Driving method of heat sensitive recording head for color print

Info

Publication number
JPS5682277A
JPS5682277A JP15962279A JP15962279A JPS5682277A JP S5682277 A JPS5682277 A JP S5682277A JP 15962279 A JP15962279 A JP 15962279A JP 15962279 A JP15962279 A JP 15962279A JP S5682277 A JPS5682277 A JP S5682277A
Authority
JP
Japan
Prior art keywords
color
heat generating
driving
signal
generating 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.)
Granted
Application number
JP15962279A
Other languages
Japanese (ja)
Other versions
JPH0116069B2 (en
Inventor
Kiyoshi Sone
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP15962279A priority Critical patent/JPS5682277A/en
Publication of JPS5682277A publication Critical patent/JPS5682277A/en
Publication of JPH0116069B2 publication Critical patent/JPH0116069B2/ja
Granted 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

Landscapes

  • Electronic Switches (AREA)
  • Facsimile Heads (AREA)
  • Fax Reproducing Arrangements (AREA)
  • Color Image Communication Systems (AREA)

Abstract

PURPOSE:To prevent the increase of the number of bits of color signals transferred to a driving circuit by making the clock frequency of a receiving side twice that of a transmitting side and driving color heat generating elements when a dot printing picture signal and a color discriminating signal both become valid. CONSTITUTION:Plural monochrome heat generating elements 25 and a common heat generating element 26 provided stretching over them are provided, and by driving one of the transistor drives Q1-Q12, a corresponding heat generating element 25 is caused to generate heat, and by giving a driving signal A to a transistor driver Qa, the common heat generating element 26 for color is caused to generate heat. By composing one picture element of a line buffer 20 of two bits, a color discriminat ing bit C and a monochrome bit B, the operating clock frequency of a receiving side is made twice that of a transmitting side. When stopped accumulating picture information in a shift register 21, picture elements B1-B6 are driven in timing a-f, C1-C6 are detected, and the color heat generating element 26 is driven by the signal A through an OR gate 22.
JP15962279A 1979-12-08 1979-12-08 Driving method of heat sensitive recording head for color print Granted JPS5682277A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15962279A JPS5682277A (en) 1979-12-08 1979-12-08 Driving method of heat sensitive recording head for color print

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15962279A JPS5682277A (en) 1979-12-08 1979-12-08 Driving method of heat sensitive recording head for color print

Publications (2)

Publication Number Publication Date
JPS5682277A true JPS5682277A (en) 1981-07-04
JPH0116069B2 JPH0116069B2 (en) 1989-03-22

Family

ID=15697734

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15962279A Granted JPS5682277A (en) 1979-12-08 1979-12-08 Driving method of heat sensitive recording head for color print

Country Status (1)

Country Link
JP (1) JPS5682277A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002137427A (en) * 2000-10-31 2002-05-14 Sato Corp Thermal printer

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51146242A (en) * 1975-06-11 1976-12-15 Hitachi Ltd Multi-color heat sensitive recording device
JPS5387121A (en) * 1977-01-11 1978-08-01 Nippon Telegr & Teleph Corp <Ntt> Method and apparatus for coding of color pattern
JPS5421743A (en) * 1977-07-20 1979-02-19 Hitachi Ltd Image recording device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51146242A (en) * 1975-06-11 1976-12-15 Hitachi Ltd Multi-color heat sensitive recording device
JPS5387121A (en) * 1977-01-11 1978-08-01 Nippon Telegr & Teleph Corp <Ntt> Method and apparatus for coding of color pattern
JPS5421743A (en) * 1977-07-20 1979-02-19 Hitachi Ltd Image recording device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002137427A (en) * 2000-10-31 2002-05-14 Sato Corp Thermal printer

Also Published As

Publication number Publication date
JPH0116069B2 (en) 1989-03-22

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