JPS5821279A - Roll heater for fixing of toner in copying machine - Google Patents

Roll heater for fixing of toner in copying machine

Info

Publication number
JPS5821279A
JPS5821279A JP12029781A JP12029781A JPS5821279A JP S5821279 A JPS5821279 A JP S5821279A JP 12029781 A JP12029781 A JP 12029781A JP 12029781 A JP12029781 A JP 12029781A JP S5821279 A JPS5821279 A JP S5821279A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
part
temp
electrodes
contact
inside
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
JP12029781A
Inventor
Kazuo Deguchi
Yoshiyuki Ishii
Tadashi Katsuta
Shinsuke Nakamoto
Original Assignee
Matsushita Electric Ind 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
    • G03G15/2053Structural details of heat elements, e.g. structure of roller or belt, eddy current, induction heating
    • G03G15/2057Structural details of heat elements, e.g. structure of roller or belt, eddy current, induction heating relating to the chemical composition of the heat element and layers thereof

Abstract

PURPOSE:To improve thermal responsiveness and to simplify a temp. control unit by bringing a heater part having a positive coefft. of resistance temp. into contact with the inside part of a metallic roller via an insulation layer. CONSTITUTION:A heater part 2 consisting of heating elements having a positive coefft. of resistance temp. is formed to a cylindrical shape provided with electrode layes on both inside and outside surfaces. The part 2 is incorporated in the bore of a metallic roller 1 in tight contact therewith via an insulation layer 3, and both the part 1 and the part 2 are made rotatable. Sliding electrodes 4a, 4b mounted to both inside and outside electrode layers of the part 2 are so formed as to slide on the stationary electrodes 8a, 8b fixed to the center of the part 1, and the leads are drawn to the outside through the sliding electrodes and the stationary electrodes. Since the part 2 is in tight contact thermally with the part 1, thermal responsiveness is improved, and since the part 2 is of self-temp. control type, the need for any temp. control unit is eliminated.
JP12029781A 1981-07-30 1981-07-30 Roll heater for fixing of toner in copying machine Pending JPS5821279A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12029781A JPS5821279A (en) 1981-07-30 1981-07-30 Roll heater for fixing of toner in copying machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12029781A JPS5821279A (en) 1981-07-30 1981-07-30 Roll heater for fixing of toner in copying machine

Publications (1)

Publication Number Publication Date
JPS5821279A true true JPS5821279A (en) 1983-02-08

Family

ID=14782742

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12029781A Pending JPS5821279A (en) 1981-07-30 1981-07-30 Roll heater for fixing of toner in copying machine

Country Status (1)

Country Link
JP (1) JPS5821279A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6373771U (en) * 1986-10-30 1988-05-17
WO1994016539A1 (en) * 1993-01-12 1994-07-21 American Roller Company Ceramic heater roller and methods of making same
US5616263A (en) * 1992-11-09 1997-04-01 American Roller Company Ceramic heater roller

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6373771U (en) * 1986-10-30 1988-05-17
US5616263A (en) * 1992-11-09 1997-04-01 American Roller Company Ceramic heater roller
WO1994016539A1 (en) * 1993-01-12 1994-07-21 American Roller Company Ceramic heater roller and methods of making same

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