JPS54161949A - Recorder - Google Patents

Recorder

Info

Publication number
JPS54161949A
JPS54161949A JP7051678A JP7051678A JPS54161949A JP S54161949 A JPS54161949 A JP S54161949A JP 7051678 A JP7051678 A JP 7051678A JP 7051678 A JP7051678 A JP 7051678A JP S54161949 A JPS54161949 A JP S54161949A
Authority
JP
Japan
Prior art keywords
circuit
power
voltage
heating
occurrence
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
JP7051678A
Other languages
Japanese (ja)
Other versions
JPS6215357B2 (en
Inventor
Hideaki Sato
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 JP7051678A priority Critical patent/JPS54161949A/en
Publication of JPS54161949A publication Critical patent/JPS54161949A/en
Publication of JPS6215357B2 publication Critical patent/JPS6215357B2/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
    • B41J2/36—Print density control
    • B41J2/37—Print density control by compensation for variation in current

Landscapes

  • Electronic Switches (AREA)
  • Fax Reproducing Arrangements (AREA)

Abstract

PURPOSE:To prevent the occurrence of uneven recording owing to fluctuations in supply voltage by detecting the electric power being applied to heating elements and controlling the power supply and cut-off from the power source. CONSTITUTION:A switching element 2 is turned ON by the set output from an FF circuit according to write signal and the DC voltage from a power source 1 having rectified a commercial AC power soruce is applied to a heating element 3. This voltage is squared in a square circuit 4 and is made to the DC signal of the level corresponding to the power to be supplied to the element 3 corresponding to the heating temperature of the element 3 by an integrating circuit 5. When the output level of the circuit 5 reaches the specified value, a level detector 6 generates a detection signal, which in turn resets the circuit 7. Thereby, the power supply through the element 2 to the element 3 is cut off and even at the fluctuating of the supply voltage the occurrence of uneven recording is prevented by the constant heating of the element 3.
JP7051678A 1978-06-12 1978-06-12 Recorder Granted JPS54161949A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7051678A JPS54161949A (en) 1978-06-12 1978-06-12 Recorder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7051678A JPS54161949A (en) 1978-06-12 1978-06-12 Recorder

Publications (2)

Publication Number Publication Date
JPS54161949A true JPS54161949A (en) 1979-12-22
JPS6215357B2 JPS6215357B2 (en) 1987-04-07

Family

ID=13433764

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7051678A Granted JPS54161949A (en) 1978-06-12 1978-06-12 Recorder

Country Status (1)

Country Link
JP (1) JPS54161949A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57130345U (en) * 1981-02-03 1982-08-13
JPS61179762A (en) * 1985-02-05 1986-08-12 Matsushita Graphic Commun Syst Inc Recording apparatus
US5253934A (en) * 1990-06-26 1993-10-19 Eastman Kodak Company L.E.D. array printer with extra driver channel
JPH08295046A (en) * 1995-04-26 1996-11-12 Kofu Nippon Denki Kk Battery driven thermal printer

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62137073A (en) * 1985-12-10 1987-06-19 森　敬 Solar ray irradiation remedy apparatus

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57130345U (en) * 1981-02-03 1982-08-13
JPS61179762A (en) * 1985-02-05 1986-08-12 Matsushita Graphic Commun Syst Inc Recording apparatus
US5253934A (en) * 1990-06-26 1993-10-19 Eastman Kodak Company L.E.D. array printer with extra driver channel
JPH08295046A (en) * 1995-04-26 1996-11-12 Kofu Nippon Denki Kk Battery driven thermal printer

Also Published As

Publication number Publication date
JPS6215357B2 (en) 1987-04-07

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