JPS55101476A - Thermal printing method - Google Patents

Thermal printing method

Info

Publication number
JPS55101476A
JPS55101476A JP1057579A JP1057579A JPS55101476A JP S55101476 A JPS55101476 A JP S55101476A JP 1057579 A JP1057579 A JP 1057579A JP 1057579 A JP1057579 A JP 1057579A JP S55101476 A JPS55101476 A JP S55101476A
Authority
JP
Japan
Prior art keywords
gate
output
period
arrives
sec
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
JP1057579A
Other languages
Japanese (ja)
Inventor
Hisao Nagao
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.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo 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 Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP1057579A priority Critical patent/JPS55101476A/en
Publication of JPS55101476A publication Critical patent/JPS55101476A/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
    • 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

  • Heat Sensitive Colour Forming Recording (AREA)

Abstract

PURPOSE:To improve durability of a heating head by a method wherein driving time for a heating head in copy printing is made longer than in an ordinary printing and the head is kept in a constant temperature. CONSTITUTION:An input signal of COPY is sent to an AND gate 4. When a printing command signal ST arrives, a pit signal ''1'' is written to T1 step of a shift register 1 in synchronization with a clock pulse CP, the 1st flip-flop 2 is set and the output Q1 disappears when the pit signal reaches T4 step. At the same time, the 2nd flip-flop 3 is set and the output Q2 disappears 6mm sec after the pit signal reaches T12 step. A gate 4 is closed every time the CP arrives and the output Q3 of the gate 4 is equal to that which gives a pause period to the output Q1 at every given period. Accordingly there appears a head driving signal HT composed of a continuous period of 6mm sec after the HT arrives from the OR gate 5 and an intermittent period of 6mm sec continued after this continuous period, a constant voltage is supplied to the heating head for a corresponding while and a constant temperature is maintained.
JP1057579A 1979-01-31 1979-01-31 Thermal printing method Pending JPS55101476A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1057579A JPS55101476A (en) 1979-01-31 1979-01-31 Thermal printing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1057579A JPS55101476A (en) 1979-01-31 1979-01-31 Thermal printing method

Publications (1)

Publication Number Publication Date
JPS55101476A true JPS55101476A (en) 1980-08-02

Family

ID=11754026

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1057579A Pending JPS55101476A (en) 1979-01-31 1979-01-31 Thermal printing method

Country Status (1)

Country Link
JP (1) JPS55101476A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4355319A (en) * 1980-02-14 1982-10-19 Matsushita Graphic Communication Systems, Inc. System for thermally recording data by partially overlapping successive data segment periods

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4355319A (en) * 1980-02-14 1982-10-19 Matsushita Graphic Communication Systems, Inc. System for thermally recording data by partially overlapping successive data segment periods

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