JPS5619777A - Gradation recording device - Google Patents

Gradation recording device

Info

Publication number
JPS5619777A
JPS5619777A JP9471879A JP9471879A JPS5619777A JP S5619777 A JPS5619777 A JP S5619777A JP 9471879 A JP9471879 A JP 9471879A JP 9471879 A JP9471879 A JP 9471879A JP S5619777 A JPS5619777 A JP S5619777A
Authority
JP
Japan
Prior art keywords
picture elements
heating resistors
gradation
dot
recording device
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
JP9471879A
Other languages
Japanese (ja)
Inventor
Kenji Fujino
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.)
Yokogawa Electric Corp
Original Assignee
Yokogawa Hokushin Electric Corp
Yokogawa Electric Works 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 Yokogawa Hokushin Electric Corp, Yokogawa Electric Works Ltd filed Critical Yokogawa Hokushin Electric Corp
Priority to JP9471879A priority Critical patent/JPS5619777A/en
Publication of JPS5619777A publication Critical patent/JPS5619777A/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

Abstract

PURPOSE:To obtain the gradation recording having the sufficient variation in its tone with high productibity by a method wherein 1 dot of a thermal head is divided into a plurality of picture elements and the number of picture elements to be heated is controlled in a thermal sensitive recording device. CONSTITUTION:1 Dot of a thermal head is divided into 16 picture elements, for example, and heating resistors R1-R16 for respective picture elements 1-16 are heated independently. When a pattern memory MP receives a gradation indicating signal CM that determines which heating resistors among R1-R16 should be driven, a selection signal SC is transmitted from the pattern memory MP to a latch circuit LAT. In this state, when a printing gate pulse PW is applied, gates G1-G16 are opened corresponding to the selection signal SC so that a current passes through the heating resistors connected to the opened gates, thus effecting the recording with desired gradation levels.
JP9471879A 1979-07-25 1979-07-25 Gradation recording device Pending JPS5619777A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9471879A JPS5619777A (en) 1979-07-25 1979-07-25 Gradation recording device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9471879A JPS5619777A (en) 1979-07-25 1979-07-25 Gradation recording device

Publications (1)

Publication Number Publication Date
JPS5619777A true JPS5619777A (en) 1981-02-24

Family

ID=14117904

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9471879A Pending JPS5619777A (en) 1979-07-25 1979-07-25 Gradation recording device

Country Status (1)

Country Link
JP (1) JPS5619777A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5972268A (en) * 1982-10-18 1984-04-24 Canon Inc Transmitting method
JPS60233959A (en) * 1984-05-07 1985-11-20 Hitachi Ltd Multiplex transmission method in loop transmission system
JPH01165459A (en) * 1987-12-22 1989-06-29 Eastman Kodatsuku Japan Kk Head drive device of thermal transfer printer

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5173650A (en) * 1974-12-24 1976-06-25 Matsushita Electric Ind Co Ltd
JPS5187921A (en) * 1975-01-20 1976-07-31 Ibm

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5173650A (en) * 1974-12-24 1976-06-25 Matsushita Electric Ind Co Ltd
JPS5187921A (en) * 1975-01-20 1976-07-31 Ibm

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5972268A (en) * 1982-10-18 1984-04-24 Canon Inc Transmitting method
JPS60233959A (en) * 1984-05-07 1985-11-20 Hitachi Ltd Multiplex transmission method in loop transmission system
JPH01165459A (en) * 1987-12-22 1989-06-29 Eastman Kodatsuku Japan Kk Head drive device of thermal transfer printer

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