Fixing apparatus for electrophotography

Details Fixing apparatus for electrophotography Fixing apparatus for electrophotography

1976-06-21

1980-02-12

Braun, Fred L.

Photocopying

Including fiber optics

219216, 432 60, G03G 1500, F27B 928, H05B 100

Patent

active

041881095

ABSTRACT:
Two fixing rollers are mounted on shafts and rotated to pressingly feed a copy sheet therebetween to fix a toner image to the copy sheet. Spring force is applied to the ends of the shafts to urge the rollers together. The axes of the shafts define an acute angle therebetween to offset a tendency for the pressing force to decrease toward the center of the rollers due to deflection of the shafts and rollers. Feed rollers feed the copy sheet into the bite of the fixing rollers at a speed which is faster than the speed that the fixing rollers feed the copy sheet therebetween. The copy sheet is therefore fed through the fixing rollers in a slackened condition which prevents wrinkling of the copy sheet due to the angle between the shafts.

REFERENCES:
patent: 3240148 (1966-03-01), Varga
patent: 3794417 (1974-02-01), Machmer
patent: 3918804 (1975-11-01), Bar-on
patent: 3937919 (1976-02-01), Clerx et al.
patent: 3941469 (1976-03-01), Okamoto
patent: 3965331 (1976-06-01), Moser et al.
patent: 4008955 (1977-02-01), Bar-on
patent: 4017065 (1977-04-01), Poehlein

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