JPS5756282A - Driving method of thermal head - Google Patents

Driving method of thermal head

Info

Publication number
JPS5756282A
JPS5756282A JP55130231A JP13023180A JPS5756282A JP S5756282 A JPS5756282 A JP S5756282A JP 55130231 A JP55130231 A JP 55130231A JP 13023180 A JP13023180 A JP 13023180A JP S5756282 A JPS5756282 A JP S5756282A
Authority
JP
Japan
Prior art keywords
printing
temperature
resistor
transistor
thermal head
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
JP55130231A
Other languages
Japanese (ja)
Inventor
Osamu Asakura
Mineo Nozaki
Masazumi Nagashima
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP55130231A priority Critical patent/JPS5756282A/en
Publication of JPS5756282A publication Critical patent/JPS5756282A/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
    • 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

  • Electronic Switches (AREA)

Abstract

PURPOSE:To obtain a method of driving a thermal head, wherein a one shot multivibrator for feeding a large electrid power to the head when the driving is started is provided in a circuit for driving the thermal head, so that a maximum temperature required for printing is attained within a short period, and there is no over- heating of a heating resistor. CONSTITUTION:The one shot multivibration OS is actuated at the rising of a printing command signal P to turn a transistor T1 on to bypass a resistor R. At the same time, since a transistor T2 is turned on by the printing command signal P, a large electric power is fed to the heating resistor TH to rise to a temperature Th within a short period. Thereafter, the transistor T1 is turned off, the voltage is lowered to a voltage needed to retain the temperature Th by the resistor R, and the temperature Th is kept until the completion of the feeding. According to this method, as a time (d) to reach a printing temperature Tp at a printing position P is short, high speed printing becomes possible, and in addition since the maximum temperature of the heating resistor would not rise more than needed, the fatigue by heat or the like can be prevented.
JP55130231A 1980-09-18 1980-09-18 Driving method of thermal head Pending JPS5756282A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55130231A JPS5756282A (en) 1980-09-18 1980-09-18 Driving method of thermal head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55130231A JPS5756282A (en) 1980-09-18 1980-09-18 Driving method of thermal head

Publications (1)

Publication Number Publication Date
JPS5756282A true JPS5756282A (en) 1982-04-03

Family

ID=15029231

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55130231A Pending JPS5756282A (en) 1980-09-18 1980-09-18 Driving method of thermal head

Country Status (1)

Country Link
JP (1) JPS5756282A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58188676A (en) * 1982-04-30 1983-11-04 Sato :Kk Temperature control system of heat sensitive printing apparatus
JPS6287364A (en) * 1985-10-15 1987-04-21 Tokyo Electric Co Ltd Driving method for thermal printing head
JPS62218150A (en) * 1985-12-13 1987-09-25 インタ−メツク　コ−ポレイシヨン Thermal printing method and device thereof
JPS62227663A (en) * 1986-03-28 1987-10-06 Alps Electric Co Ltd Thermal printer control system
JPH01186340A (en) * 1988-01-20 1989-07-25 Sanyo Electric Co Ltd Method for driving sublimation type thermal transfer printer

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4913335A (en) * 1972-04-06 1974-02-05
JPS5216674U (en) * 1975-07-24 1977-02-05
JPS5290952A (en) * 1976-01-23 1977-07-30 Seiko Epson Corp Process for applying energizing pulse of thermal printer

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4913335A (en) * 1972-04-06 1974-02-05
JPS5216674U (en) * 1975-07-24 1977-02-05
JPS5290952A (en) * 1976-01-23 1977-07-30 Seiko Epson Corp Process for applying energizing pulse of thermal printer

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58188676A (en) * 1982-04-30 1983-11-04 Sato :Kk Temperature control system of heat sensitive printing apparatus
JPS6287364A (en) * 1985-10-15 1987-04-21 Tokyo Electric Co Ltd Driving method for thermal printing head
JPS62218150A (en) * 1985-12-13 1987-09-25 インタ−メツク　コ−ポレイシヨン Thermal printing method and device thereof
JPS62227663A (en) * 1986-03-28 1987-10-06 Alps Electric Co Ltd Thermal printer control system
JPH01186340A (en) * 1988-01-20 1989-07-25 Sanyo Electric Co Ltd Method for driving sublimation type thermal transfer printer

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