JPS5589879A - Temperature control system of fixing device - Google Patents

Temperature control system of fixing device

Info

Publication number
JPS5589879A
JPS5589879A JP16577878A JP16577878A JPS5589879A JP S5589879 A JPS5589879 A JP S5589879A JP 16577878 A JP16577878 A JP 16577878A JP 16577878 A JP16577878 A JP 16577878A JP S5589879 A JPS5589879 A JP S5589879A
Authority
JP
Japan
Prior art keywords
heater
temperature
comparator
controlling
output
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
JP16577878A
Other languages
Japanese (ja)
Other versions
JPS6365942B2 (en
Inventor
Koji Yamabe
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.)
Panasonic System Solutions Japan Co Ltd
Original Assignee
Matsushita Graphic Communication Systems 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 Matsushita Graphic Communication Systems Inc filed Critical Matsushita Graphic Communication Systems Inc
Priority to JP16577878A priority Critical patent/JPS5589879A/en
Publication of JPS5589879A publication Critical patent/JPS5589879A/en
Publication of JPS6365942B2 publication Critical patent/JPS6365942B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Fixing For Electrophotography (AREA)
  • Control Of Temperature (AREA)

Abstract

PURPOSE: To keep the heater temperature at the fixing temperature even when the conveying speed of recording paper is not uniform, by deciding the temperature change speed of the heater, and controlling the electric power to be supplied to the heater depending on the result of this decision.
CONSTITUTION: A temperature detecting element is fitted in a heater 1, and the output thereof is inputted into the (+) input terminal of a comparator 6. Resistors 8aW8f make a voltage level corresponding to the reference temperature by the ratio to the resistance against a resistor 7, and voltage levels corresponding to these referance temperatures sequentially appear at the (-) terminal of the comparator 6 in time divisionally. The comparator 6 compares the two inputs in time divisionally, and the output thereof becomes high level when the temperature of the heater 1 is high, and low level when low. FF9a to 9f operate according to the signals of results of comparison obtained from the comparator 6, and counters 10W12 count the clock pulses when the outputs from FF9aW9f are high level, and the number of counting is compared with the content stored in decision circuits 22W24, thereby controlling a lighting ratio control circuit 3.
COPYRIGHT: (C)1980,JPO&Japio
JP16577878A 1978-12-27 1978-12-27 Temperature control system of fixing device Granted JPS5589879A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16577878A JPS5589879A (en) 1978-12-27 1978-12-27 Temperature control system of fixing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16577878A JPS5589879A (en) 1978-12-27 1978-12-27 Temperature control system of fixing device

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP59261179A Division JPS60229123A (en) 1984-12-11 1984-12-11 Temperature controller

Publications (2)

Publication Number Publication Date
JPS5589879A true JPS5589879A (en) 1980-07-07
JPS6365942B2 JPS6365942B2 (en) 1988-12-19

Family

ID=15818837

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16577878A Granted JPS5589879A (en) 1978-12-27 1978-12-27 Temperature control system of fixing device

Country Status (1)

Country Link
JP (1) JPS5589879A (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5732467A (en) * 1980-07-10 1982-02-22 Ibm Method of controlling melting temperature for electrophotographic copying machine
JPS5835571A (en) * 1981-08-24 1983-03-02 インタ−ナシヨナル・ビジネス・マシ−ンズ・コ−ポレ−シヨン Control of heat fusing apparatus
JPS58103071U (en) * 1981-12-28 1983-07-13 京セラミタ株式会社 Copy machine heat fixing device
JPS5975319A (en) * 1982-10-25 1984-04-28 Matsushita Electric Ind Co Ltd Temperature control device
JPS6055372A (en) * 1983-09-06 1985-03-30 Fuji Xerox Co Ltd Fixing device of copying machine
US4551007A (en) * 1984-05-11 1985-11-05 Xerox Corporation Controller for a fusing device of an electrophotographic printing machine
JPS60169664U (en) * 1984-07-30 1985-11-11 京セラミタ株式会社 Copy machine heat fixing device
JPS63172187A (en) * 1987-01-09 1988-07-15 Canon Inc Fusing device
JPS63178863U (en) * 1987-05-09 1988-11-18
JPH01319082A (en) * 1988-06-20 1989-12-25 Sharp Corp Temperature controller for fixing device
JPH02163787A (en) * 1988-12-17 1990-06-25 Canon Inc Image thermal fixing device
JPH05127757A (en) * 1991-10-31 1993-05-25 Canon Inc Heating device
US5966562A (en) * 1997-09-19 1999-10-12 Sharp Kabushiki Kaisha Fixing device having temperature control means

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0218253U (en) * 1988-07-20 1990-02-06

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51121334A (en) * 1975-04-01 1976-10-23 Xerox Corp Method of and circuit for fixing control for duplicator
JPS5215242U (en) * 1975-07-22 1977-02-03
JPS53110791A (en) * 1977-03-08 1978-09-27 Matsushita Electric Works Ltd Temperature controlling method
JPS53117189A (en) * 1977-03-23 1978-10-13 Sony Corp Load controller
JPS5492746A (en) * 1977-12-30 1979-07-23 Konishiroku Photo Ind Co Ltd Fixing device of electrophotographic copier

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51121334A (en) * 1975-04-01 1976-10-23 Xerox Corp Method of and circuit for fixing control for duplicator
JPS5215242U (en) * 1975-07-22 1977-02-03
JPS53110791A (en) * 1977-03-08 1978-09-27 Matsushita Electric Works Ltd Temperature controlling method
JPS53117189A (en) * 1977-03-23 1978-10-13 Sony Corp Load controller
JPS5492746A (en) * 1977-12-30 1979-07-23 Konishiroku Photo Ind Co Ltd Fixing device of electrophotographic copier

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5732467A (en) * 1980-07-10 1982-02-22 Ibm Method of controlling melting temperature for electrophotographic copying machine
JPS5835571A (en) * 1981-08-24 1983-03-02 インタ−ナシヨナル・ビジネス・マシ−ンズ・コ−ポレ−シヨン Control of heat fusing apparatus
JPS58103071U (en) * 1981-12-28 1983-07-13 京セラミタ株式会社 Copy machine heat fixing device
JPS5975319A (en) * 1982-10-25 1984-04-28 Matsushita Electric Ind Co Ltd Temperature control device
JPS6055372A (en) * 1983-09-06 1985-03-30 Fuji Xerox Co Ltd Fixing device of copying machine
US4551007A (en) * 1984-05-11 1985-11-05 Xerox Corporation Controller for a fusing device of an electrophotographic printing machine
JPS60169664U (en) * 1984-07-30 1985-11-11 京セラミタ株式会社 Copy machine heat fixing device
JPS63172187A (en) * 1987-01-09 1988-07-15 Canon Inc Fusing device
JPS63178863U (en) * 1987-05-09 1988-11-18
JPH01319082A (en) * 1988-06-20 1989-12-25 Sharp Corp Temperature controller for fixing device
JPH02163787A (en) * 1988-12-17 1990-06-25 Canon Inc Image thermal fixing device
JPH05127757A (en) * 1991-10-31 1993-05-25 Canon Inc Heating device
US5966562A (en) * 1997-09-19 1999-10-12 Sharp Kabushiki Kaisha Fixing device having temperature control means

Also Published As

Publication number Publication date
JPS6365942B2 (en) 1988-12-19

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