Fixing unit for electrostatic copiers

Details Fixing unit for electrostatic copiers Fixing unit for electrostatic copiers

1975-10-14

1977-03-01

Hix, L. T.

Photocopying

Including fiber optics

219216, 219469, 432 59, G03G 1500

Patent

active

040099539

ABSTRACT:
A fixing unit for fixing the developing powder on a copy sheet produced in a copy machine which comprises a first roller having its outer surface covered by a layer adapted to resist adhesion of the powder thereto, a second roller cooperating with the first and defining with said first roller a nip through which the copy sheet is passed by rotation of the rollers, with the face bearing the powder in contact with the surface of the first roller, and a third roller rotated in contact with the first roller carrying in its interior a plurality of selectively actuable heating units for selectively heating portions of the surface of the first roller, in accordance with the length of a copy sheet.

REFERENCES:
patent: 2588966 (1952-03-01), Dale
patent: 3811821 (1974-05-01), Ariyama et al.
patent: 3874843 (1975-04-01), Fujimoto

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