JPS5574572A - Heat fixing device in copying machine - Google Patents

Heat fixing device in copying machine

Info

Publication number
JPS5574572A
JPS5574572A JP14802878A JP14802878A JPS5574572A JP S5574572 A JPS5574572 A JP S5574572A JP 14802878 A JP14802878 A JP 14802878A JP 14802878 A JP14802878 A JP 14802878A JP S5574572 A JPS5574572 A JP S5574572A
Authority
JP
Japan
Prior art keywords
temperature
copying paper
paper
fixing
copying
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
JP14802878A
Other languages
Japanese (ja)
Inventor
Goro Mori
Toshiyuki Ogawa
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP14802878A priority Critical patent/JPS5574572A/en
Publication of JPS5574572A publication Critical patent/JPS5574572A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To prevent fixing failure and always obtain a copy of excellent fixing state, by detecting the temperature related to the temperature of copying paper in the paper feed section, and varying the surface temperature of the fixing roll depending on the result of such detection.
CONSTITUTION: A surface temperature detecting element TH1 detects the surface temperature of fixing roll 13, and a copying paper temperature detecting element TH2 is an element intended to detect the temperature related to the temperature of the copying paper in a paper feed section C (such temperature that has a close correlation with the temperature of the copying paper itself and the temperature of copying paper, and representing the temperature of copying paper), which is provided in the lower face of paper feed elevation table 2 in the paper feed section C. The device is constituted so that when the temperature of copying paper rises, the temperature of the fixing roll lowers, and when the temperature of copying paper drops, the surface temperature of the fixing roll elevates. Thus, preventing fixing failure, always a copy of excellent fixing state may be obtained.
COPYRIGHT: (C)1980,JPO&Japio
JP14802878A 1978-11-30 1978-11-30 Heat fixing device in copying machine Pending JPS5574572A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14802878A JPS5574572A (en) 1978-11-30 1978-11-30 Heat fixing device in copying machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14802878A JPS5574572A (en) 1978-11-30 1978-11-30 Heat fixing device in copying machine

Publications (1)

Publication Number Publication Date
JPS5574572A true JPS5574572A (en) 1980-06-05

Family

ID=15443489

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14802878A Pending JPS5574572A (en) 1978-11-30 1978-11-30 Heat fixing device in copying machine

Country Status (1)

Country Link
JP (1) JPS5574572A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5781278A (en) * 1980-11-10 1982-05-21 Ricoh Co Ltd Method for controlling operation of electrophotographic copier
JPS61145960U (en) * 1985-03-01 1986-09-09
JPS6455956U (en) * 1987-09-30 1989-04-06
US4822977A (en) * 1987-04-20 1989-04-18 Xerox Corporation Paper temperature measurement fuser control
JPH01237585A (en) * 1987-10-26 1989-09-22 Mita Ind Co Ltd Fixing device and temperature control method
JPH0353276A (en) * 1989-07-21 1991-03-07 Nec Niigata Ltd Electrophotographic printing device
JP2011191569A (en) * 2010-03-15 2011-09-29 Ricoh Co Ltd Printing device and image forming apparatus

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5043936A (en) * 1973-08-21 1975-04-21
JPS5057442A (en) * 1973-09-20 1975-05-19

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5043936A (en) * 1973-08-21 1975-04-21
JPS5057442A (en) * 1973-09-20 1975-05-19

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5781278A (en) * 1980-11-10 1982-05-21 Ricoh Co Ltd Method for controlling operation of electrophotographic copier
JPS61145960U (en) * 1985-03-01 1986-09-09
US4822977A (en) * 1987-04-20 1989-04-18 Xerox Corporation Paper temperature measurement fuser control
JPS6455956U (en) * 1987-09-30 1989-04-06
JPH01237585A (en) * 1987-10-26 1989-09-22 Mita Ind Co Ltd Fixing device and temperature control method
JPH0353276A (en) * 1989-07-21 1991-03-07 Nec Niigata Ltd Electrophotographic printing device
JP2011191569A (en) * 2010-03-15 2011-09-29 Ricoh Co Ltd Printing device and image forming apparatus

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