JPS5757679A - Device for driving thermal head - Google Patents

Device for driving thermal head

Info

Publication number
JPS5757679A
JPS5757679A JP13170880A JP13170880A JPS5757679A JP S5757679 A JPS5757679 A JP S5757679A JP 13170880 A JP13170880 A JP 13170880A JP 13170880 A JP13170880 A JP 13170880A JP S5757679 A JPS5757679 A JP S5757679A
Authority
JP
Japan
Prior art keywords
output
change
outputs
latch circuit
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.)
Granted
Application number
JP13170880A
Other languages
Japanese (ja)
Other versions
JPS6128516B2 (en
Inventor
Minoru Ogata
Masahiro Sakamoto
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 JP13170880A priority Critical patent/JPS5757679A/en
Publication of JPS5757679A publication Critical patent/JPS5757679A/en
Publication of JPS6128516B2 publication Critical patent/JPS6128516B2/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
    • 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 control power supplied to thermal heads irrespective of characteristics of detecting elements or a change thereof, by a device wherein a change in temperature of a head base is output as a change of electric resistance in a digital signal and this output signal is converted to drive the head with the corresponding time width. CONSTITUTION:A thermistor 1 attached to a base of a thermal head is connected to an operational amplifier 2. When output of the amplifier 2 assumes H and a start pulse from a terminal 16 assumes L, an AND gate 8 is opened by output from inverter and a latch circuit 7 is driven to latch output of a counter 5. An ROM9 includes a conversion table for generating proper outputs D0-D7 by referring outputs from the latch circuit 7 as addresses. Outputs 1Q-8Q of a latch circuit 10 are connected to switch elements 11a-11h of a switch circuit 11, respectively. Operation of each of those switch elements can vary a resistance value which determines a time constant of a monostable multivibrator 12.
JP13170880A 1980-09-24 1980-09-24 Device for driving thermal head Granted JPS5757679A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13170880A JPS5757679A (en) 1980-09-24 1980-09-24 Device for driving thermal head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13170880A JPS5757679A (en) 1980-09-24 1980-09-24 Device for driving thermal head

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP9318787A Division JPH0632944B2 (en) 1987-04-17 1987-04-17 Thermal recording head protection method and recording apparatus

Publications (2)

Publication Number Publication Date
JPS5757679A true JPS5757679A (en) 1982-04-06
JPS6128516B2 JPS6128516B2 (en) 1986-06-30

Family

ID=15064335

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13170880A Granted JPS5757679A (en) 1980-09-24 1980-09-24 Device for driving thermal head

Country Status (1)

Country Link
JP (1) JPS5757679A (en)

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5827464A (en) * 1981-08-11 1983-02-18 Nippon Telegr & Teleph Corp <Ntt> Controller for heat sensing recording
JPS58219072A (en) * 1982-06-16 1983-12-20 Hitachi Ltd Heat-sensitive recording system
JPS597068A (en) * 1982-07-06 1984-01-14 Toshiba Corp Thermal recorder
DE3327904A1 (en) * 1982-08-05 1984-02-09 Canon K.K., Tokyo THERMAL RECORDING DEVICE
JPS59120476A (en) * 1982-12-27 1984-07-12 インタ−ナショナル　ビジネス　マシ−ンズ　コ−ポレ−ション Thermal printing head
JPS59142170A (en) * 1983-02-01 1984-08-15 Shinko Electric Co Ltd Density-controlling method for thermal head
JPS59187452U (en) * 1983-05-30 1984-12-12 株式会社富士通ゼネラル printing device
JPS609271A (en) * 1983-06-28 1985-01-18 Ricoh Co Ltd Half tone recording system of thermal recording device
JPS60225772A (en) * 1984-04-25 1985-11-11 Tohoku Oki Denki Kk Power source circuit for driving thermal printing head
JPS61117487A (en) * 1984-11-13 1986-06-04 三菱電機株式会社 Controller for driving mechanism of control rod
JPS61120578A (en) * 1984-11-16 1986-06-07 Canon Inc Recorder
JPS61121658A (en) * 1984-11-19 1986-06-09 Canon Inc Recording device
JPS61173963A (en) * 1985-01-29 1986-08-05 Matsushita Electric Ind Co Ltd Thermal printer
JPS62255165A (en) * 1986-04-28 1987-11-06 Konika Corp Thermal recorder capable of operating recording pulses
US4719473A (en) * 1985-02-08 1988-01-12 Canon Kabushiki Kaisha Recording apparatus
US4860034A (en) * 1985-04-15 1989-08-22 Canon Kabushiki Kaisha Ink jet recording apparatus with ambient temperature detecting means for providing a signal to drive control means responsive to a recording-density data signal
JPH01295862A (en) * 1988-05-24 1989-11-29 Alps Electric Co Ltd Method for controlling current supply of thermal head
JPH0229352A (en) * 1988-07-19 1990-01-31 Konica Corp Printer
US4926248A (en) * 1985-03-30 1990-05-15 Hitachi, Ltd. Scanning recording type printing method and apparatus for increasing image quality by controlling tone dot locations within image pixels
JPH0397573A (en) * 1989-09-11 1991-04-23 Mitsubishi Electric Corp Thermal head driver
US5172142A (en) * 1985-04-15 1992-12-15 Canon Kabushiki Kaisha Ink jet recording apparatus with driving means providing a driving signal having upper and lower limits in response to an input signal
US5191356A (en) * 1986-07-18 1993-03-02 Canon Kabushiki Kaisha Tower conserving recording apparatus
US5905511A (en) * 1985-04-15 1999-05-18 Canon Kabushiki Kaisha Ink jet recording apparatus for accurately recording regardless of ambient temperature

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6156654B2 (en) * 1981-08-11 1986-12-03 Nippon Denshin Denwa Kk
JPS5827464A (en) * 1981-08-11 1983-02-18 Nippon Telegr & Teleph Corp <Ntt> Controller for heat sensing recording
JPS58219072A (en) * 1982-06-16 1983-12-20 Hitachi Ltd Heat-sensitive recording system
JPH0412064B2 (en) * 1982-06-16 1992-03-03 Hitachi Ltd
JPS597068A (en) * 1982-07-06 1984-01-14 Toshiba Corp Thermal recorder
JPH0366156B2 (en) * 1982-07-06 1991-10-16 Tokyo Shibaura Electric Co
DE3327904A1 (en) * 1982-08-05 1984-02-09 Canon K.K., Tokyo THERMAL RECORDING DEVICE
JPS59120476A (en) * 1982-12-27 1984-07-12 インタ−ナショナル　ビジネス　マシ−ンズ　コ−ポレ−ション Thermal printing head
JPS59142170A (en) * 1983-02-01 1984-08-15 Shinko Electric Co Ltd Density-controlling method for thermal head
JPS59187452U (en) * 1983-05-30 1984-12-12 株式会社富士通ゼネラル printing device
JPH0351162Y2 (en) * 1983-05-30 1991-10-31
JPS609271A (en) * 1983-06-28 1985-01-18 Ricoh Co Ltd Half tone recording system of thermal recording device
JPH0439827B2 (en) * 1983-06-28 1992-06-30
JPS60225772A (en) * 1984-04-25 1985-11-11 Tohoku Oki Denki Kk Power source circuit for driving thermal printing head
JPS61117487A (en) * 1984-11-13 1986-06-04 三菱電機株式会社 Controller for driving mechanism of control rod
JPH0635191B2 (en) * 1984-11-16 1994-05-11 キヤノン株式会社 Recording device
JPS61120578A (en) * 1984-11-16 1986-06-07 Canon Inc Recorder
JPS61121658A (en) * 1984-11-19 1986-06-09 Canon Inc Recording device
JPH0635192B2 (en) * 1984-11-19 1994-05-11 キヤノン株式会社 Recording device
JPS61173963A (en) * 1985-01-29 1986-08-05 Matsushita Electric Ind Co Ltd Thermal printer
US4719473A (en) * 1985-02-08 1988-01-12 Canon Kabushiki Kaisha Recording apparatus
USRE38235E1 (en) 1985-03-30 2003-08-26 Hitachi, Ltd. Scanning recording type printing method and apparatus for increasing image quality by controlling tone dot locations within image pixels
US4926248A (en) * 1985-03-30 1990-05-15 Hitachi, Ltd. Scanning recording type printing method and apparatus for increasing image quality by controlling tone dot locations within image pixels
US4860034A (en) * 1985-04-15 1989-08-22 Canon Kabushiki Kaisha Ink jet recording apparatus with ambient temperature detecting means for providing a signal to drive control means responsive to a recording-density data signal
US5172142A (en) * 1985-04-15 1992-12-15 Canon Kabushiki Kaisha Ink jet recording apparatus with driving means providing a driving signal having upper and lower limits in response to an input signal
US5905511A (en) * 1985-04-15 1999-05-18 Canon Kabushiki Kaisha Ink jet recording apparatus for accurately recording regardless of ambient temperature
JPS62255165A (en) * 1986-04-28 1987-11-06 Konika Corp Thermal recorder capable of operating recording pulses
US5191356A (en) * 1986-07-18 1993-03-02 Canon Kabushiki Kaisha Tower conserving recording apparatus
JPH01295862A (en) * 1988-05-24 1989-11-29 Alps Electric Co Ltd Method for controlling current supply of thermal head
JPH0229352A (en) * 1988-07-19 1990-01-31 Konica Corp Printer
JPH0397573A (en) * 1989-09-11 1991-04-23 Mitsubishi Electric Corp Thermal head driver

Also Published As

Publication number Publication date
JPS6128516B2 (en) 1986-06-30

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