JPS5770575A - Control device for fixing temperature - Google Patents

Control device for fixing temperature

Info

Publication number
JPS5770575A
JPS5770575A JP14660480A JP14660480A JPS5770575A JP S5770575 A JPS5770575 A JP S5770575A JP 14660480 A JP14660480 A JP 14660480A JP 14660480 A JP14660480 A JP 14660480A JP S5770575 A JPS5770575 A JP S5770575A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
temp
roller
surface
change rates
sensor
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
JP14660480A
Inventor
Masao Hosaka
Toshiyuki Kikuchi
Shozo Miyawaki
Nachio Seko
Takeshi Ugai
Takashi Yano
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

Links

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ELECTROGRAPHY; HOLOGRAPHY
    • G03GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00Apparatus for electrographic processes using a charge pattern
    • G03G15/20Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat
    • G03G15/2003Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat
    • G03G15/2014Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat using contact heat
    • G03G15/2039Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat using contact heat with means for controlling the fixing temperature

Abstract

PURPOSE:To eliminate overshooting and unfixing by providing a means of measuring the temp. of prescribed parts and calculating temp. change rates from the measured temps., and a means of controlling supply electric power to heaters in accordance with said temps. and temp. change rates. CONSTITUTION:A temp. sensor 6 and a pressure sensor 7 are used for the fixing temp. control device. The thermistor 6 detects the surface temp. of a fixing roller 1 by contacting with its surface, and the sensor 7 is installed between the respective shafts of the roller 1 and a backup rolle 2 and is so arranged as to detect the pressure of the roller 1 and copying paper 3. A microcomputer 16 operates temp. change rates and compares the same immediately with the reference value in a memory 17. Hence, it is possible to control the surface temp. of the roller 1 with the idedal curve including the heat capacity of the system, and phenomena such as overshooting and unfixing are eliminated.
JP14660480A 1980-10-20 1980-10-20 Control device for fixing temperature Pending JPS5770575A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14660480A JPS5770575A (en) 1980-10-20 1980-10-20 Control device for fixing temperature

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14660480A JPS5770575A (en) 1980-10-20 1980-10-20 Control device for fixing temperature

Publications (1)

Publication Number Publication Date
JPS5770575A true true JPS5770575A (en) 1982-05-01

Family

ID=15411478

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14660480A Pending JPS5770575A (en) 1980-10-20 1980-10-20 Control device for fixing temperature

Country Status (1)

Country Link
JP (1) JPS5770575A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4551007A (en) * 1984-05-11 1985-11-05 Xerox Corporation Controller for a fusing device of an electrophotographic printing machine
FR2701575A1 (en) * 1993-02-16 1994-08-19 Canon Kk A fixing apparatus at variable temperature.
EP0632345A2 (en) * 1993-05-27 1995-01-04 Canon Kabushiki Kaisha An image forming apparatus
EP0871088A1 (en) * 1997-04-11 1998-10-14 Xerox Corporation System for managing fuser modules in a digital printing apparatus

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4551007A (en) * 1984-05-11 1985-11-05 Xerox Corporation Controller for a fusing device of an electrophotographic printing machine
EP0162619A1 (en) * 1984-05-11 1985-11-27 Xerox Corporation A controller for a fusing device
FR2701575A1 (en) * 1993-02-16 1994-08-19 Canon Kk A fixing apparatus at variable temperature.
EP0612003A1 (en) * 1993-02-16 1994-08-24 Canon Kabushiki Kaisha Fixing apparatus with variable fixing temperature
US5534987A (en) * 1993-02-16 1996-07-09 Canon Kabushiki Kaisha Fixing apparatus with variable fixing temperature
EP0632345A2 (en) * 1993-05-27 1995-01-04 Canon Kabushiki Kaisha An image forming apparatus
EP0632345A3 (en) * 1993-05-27 1998-04-01 Canon Kabushiki Kaisha An image forming apparatus
EP0871088A1 (en) * 1997-04-11 1998-10-14 Xerox Corporation System for managing fuser modules in a digital printing apparatus

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