Image transfer unit of image formation apparatus

Details Image transfer unit of image formation apparatus Image transfer unit of image formation apparatus

1992-10-23

1996-01-09

Grimley, A. T.

Photocopying

Contact printing

Light boxes

355210, 355212, G03G 1514

Patent

active

054833302

ABSTRACT:
An image transfer unit of an image formation apparatus is composed of a belt-shaped image bearing member on which a toner image is to be formed, a plurality of supporting and tension-application rollers which supports and provides tension to the belt-shaped image bearing member, an image transfer roller for transferring the toner image from the belt-shaped image bearing member to a transfer sheet, and a backup member having an outer peripheral elastic layer with a predetermined elasticity. The elastic layer of the backup member is urged with a predetermined pressure toward the image transfer roller via the belt-shaped image bearing member, with the belt-shaped image bearing member being held between the elastic layer of the backup member and the image transfer roller.

REFERENCES:
patent: 3866572 (1975-02-01), Gundlach
patent: 4165173 (1979-08-01), Iwai et al.
patent: 4531825 (1985-07-01), Miwa et al.
patent: 4607935 (1986-08-01), Kindt et al.
patent: 4657373 (1987-04-01), Winthaegen et al.
patent: 5191378 (1993-03-01), Itaya et al.
patent: 5318631 (1994-06-01), Tsukamoto

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