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JPS5753773A - Heat-roller fixing device - Google Patents

Heat-roller fixing device

Info

Publication number
JPS5753773A
JPS5753773A JP12809280A JP12809280A JPS5753773A JP S5753773 A JPS5753773 A JP S5753773A JP 12809280 A JP12809280 A JP 12809280A JP 12809280 A JP12809280 A JP 12809280A JP S5753773 A JPS5753773 A JP S5753773A
Authority
JP
Japan
Prior art keywords
mandrel
roller
heat roller
heater
heat
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
JP12809280A
Other languages
Japanese (ja)
Other versions
JPS6344223B2 (en
Inventor
Toshiyuki Kikuchi
Yasuo Asahina
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 JP12809280A priority Critical patent/JPS5753773A/en
Publication of JPS5753773A publication Critical patent/JPS5753773A/en
Publication of JPS6344223B2 publication Critical patent/JPS6344223B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/20—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat
    • G03G15/2003—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat
    • G03G15/2014—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat using contact heat
    • G03G15/2039—Apparatus 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
    • G03G15/2042—Apparatus 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 specially for the axial heat partition

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Resistance Heating (AREA)
  • Fixing For Electrophotography (AREA)

Abstract

PURPOSE:To achieve fixation with uniform temperature distribution without waste of energy even when a paper with narrow paper passing width is used, by forming the mandrel of a heat roller by using a material with low thermal conductivity and by dividing a heater into two and arranging them in shifting their positions each other. CONSTITUTION:A heat roller device consists of a heat roller 1 and a pressure roller pressed against it. The mandrel 5 of the heat roller 1 is made of a material having <=100kcal/m.h.deg thermal conductivity lambda, such as stainless steel (2mm. thickness) having lambda=14. In the mandrel 5, two heaters 6 and 7 having light-emission length L1/2 which is a half the overall length L1 of the roller are arranged in shifting their positions mutually and arranged so as to make the light emission lengths of the both equal to the roller overall length L1. On the circumferential surface of the mandrel, two temperature detecting elements 8 and 9 are provided corresponding to the heaters 6 and 7. When a recording paper of half size or smaller is used, only the heater 6 is tured on and the heater 7 is not used.
JP12809280A 1980-09-16 1980-09-16 Heat-roller fixing device Granted JPS5753773A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12809280A JPS5753773A (en) 1980-09-16 1980-09-16 Heat-roller fixing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12809280A JPS5753773A (en) 1980-09-16 1980-09-16 Heat-roller fixing device

Publications (2)

Publication Number Publication Date
JPS5753773A true JPS5753773A (en) 1982-03-30
JPS6344223B2 JPS6344223B2 (en) 1988-09-02

Family

ID=14976196

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12809280A Granted JPS5753773A (en) 1980-09-16 1980-09-16 Heat-roller fixing device

Country Status (1)

Country Link
JP (1) JPS5753773A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4585325A (en) * 1983-03-16 1986-04-29 Hoechst Aktiengesellschaft Fixing roller device
US4588281A (en) * 1984-09-04 1986-05-13 Xerox Corporation Fusing apparatus
US4618240A (en) * 1982-03-16 1986-10-21 Canon Kabushiki Kaisha Heating device having a heat insulating roller
US9141048B2 (en) 2013-03-14 2015-09-22 Ricoh Company, Ltd. Fixing device and image forming apparatus
US9645535B2 (en) 2013-06-25 2017-05-09 Ricoh Company, Ltd. Fixing device for fixing a toner image on a sheet-shaped recording medium and image formation apparatus

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4618240A (en) * 1982-03-16 1986-10-21 Canon Kabushiki Kaisha Heating device having a heat insulating roller
US4585325A (en) * 1983-03-16 1986-04-29 Hoechst Aktiengesellschaft Fixing roller device
US4588281A (en) * 1984-09-04 1986-05-13 Xerox Corporation Fusing apparatus
US9141048B2 (en) 2013-03-14 2015-09-22 Ricoh Company, Ltd. Fixing device and image forming apparatus
US9645535B2 (en) 2013-06-25 2017-05-09 Ricoh Company, Ltd. Fixing device for fixing a toner image on a sheet-shaped recording medium and image formation apparatus

Also Published As

Publication number Publication date
JPS6344223B2 (en) 1988-09-02

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