JPS56164883A - Heat sensitive printing device - Google Patents

Heat sensitive printing device

Info

Publication number
JPS56164883A
JPS56164883A JP6923880A JP6923880A JPS56164883A JP S56164883 A JPS56164883 A JP S56164883A JP 6923880 A JP6923880 A JP 6923880A JP 6923880 A JP6923880 A JP 6923880A JP S56164883 A JPS56164883 A JP S56164883A
Authority
JP
Japan
Prior art keywords
heat sensitive
time
electricity
conducting
color
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
JP6923880A
Other languages
Japanese (ja)
Inventor
Nobuhiro Nakamura
Hiromi Yamashita
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP6923880A priority Critical patent/JPS56164883A/en
Publication of JPS56164883A publication Critical patent/JPS56164883A/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

Landscapes

  • Electronic Switches (AREA)

Abstract

PURPOSE:To effect the heat sensitive printing with a predetermined color or density efficiently by a method wherein a time for conducting an electricity is controlled in accordance with the color or the density in one time band for conducting the electricity. CONSTITUTION:When a control signal is impressed from a logic section 3 into a thyristor switch section 2, thyristor elements 2a-2n are turned on in a relatively short period of time. In case the heat sensitive printing is effected in three stages of tone, for example, first, second and third heating element groups are turned on respectively by impressing an electric source to the heating element groups which are printing with first, second and third densities while they are turned off by opening an opening and closing switch 43. Accordingly, the heat sensitive paper being contacted with the heating section 1 changes the color thereof into a dense color in proportion to the length of the conducting time of electricity, therefore, the conducting time of the electricity to each heating element is controlled in accordance with the density of a picture element to obtan the image of the heat sensitive printing having three stages of tone.
JP6923880A 1980-05-23 1980-05-23 Heat sensitive printing device Pending JPS56164883A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6923880A JPS56164883A (en) 1980-05-23 1980-05-23 Heat sensitive printing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6923880A JPS56164883A (en) 1980-05-23 1980-05-23 Heat sensitive printing device

Publications (1)

Publication Number Publication Date
JPS56164883A true JPS56164883A (en) 1981-12-18

Family

ID=13396964

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6923880A Pending JPS56164883A (en) 1980-05-23 1980-05-23 Heat sensitive printing device

Country Status (1)

Country Link
JP (1) JPS56164883A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61175055A (en) * 1985-01-31 1986-08-06 Tokyo Electric Co Ltd Thermal printer
JPH0427565A (en) * 1990-05-23 1992-01-30 Matsushita Electric Ind Co Ltd Printer apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61175055A (en) * 1985-01-31 1986-08-06 Tokyo Electric Co Ltd Thermal printer
JPH0427565A (en) * 1990-05-23 1992-01-30 Matsushita Electric Ind Co Ltd Printer apparatus

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