Removable rollers in an image fixing device

Photocopying – Contact printing – Light boxes

Patent

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355289, 355206, 219216, G03G 1520

Patent

active

054813476

ABSTRACT:
An image fixing device includes a fixing roller having bearings at each end, a backup roller held in pressure contact with the fixing roller, and a frame receiving the fixing roller and backup roller and having an abnormal temperature rise prevention element. The fixing roller and the backup roller are insertable into the frame in directions perpendicular to the axes of these rollers. The bearing at one end of the fixing roller holds its entire circumference while the other bearing supports only part of the circumference of the fixing roller and the abnormal temperature rise prevention element is set at a predetermined positional relationship to the heating roller as a result of insertion of the heating roller.

REFERENCES:
patent: 4147501 (1979-04-01), Goshima et al.
patent: 4389114 (1983-06-01), Westerman
patent: 4428660 (1984-01-01), Matsumoto
patent: 4640600 (1987-02-01), Hirabayashi et al.
patent: 4785319 (1988-11-01), Fujino et al.
patent: 4899197 (1990-02-01), Davis et al.
"IBM Technical Disclosure Bulletin" vol. 22, No. 10, Mar. 1980, p. 4403.
"IBM Technical Disclosure Bulletin" vol. 23, No. 12, May 1981, pp. 5622-5623.

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