Image forming apporating having cleaning roller rotatable at dif

Details Image forming apporating having cleaning roller rotatable at dif Image forming apporating having cleaning roller rotatable at dif

1992-09-24

1993-06-15

Braun, Fred L.

Photocopying

Contact printing

Light boxes

355299, G03G 2100

Patent

active

052203913

ABSTRACT:
A cleaning device for removing substances remaining on a rotatable image holding member in an image forming apparatus, which includes:
a cleaning roller rotatably supported in a state contacting the image holding member so as to remove the substances remaining on a surface of the image holding member, and a drive change-over device arranged to change-over driving so as to rotate the cleaning roller following rotation of the image holding member during a period in which image formation is effected by the image holding member, and to impart a speed difference to the cleaning roller with respect to the image holding member during other periods in which the image formation is not effected.

REFERENCES:
patent: 3438706 (1969-04-01), Tanaka et al.
patent: 3927937 (1975-12-01), de Keyzer
patent: 3950092 (1976-04-01), Zoltner
patent: 4131359 (1978-12-01), Honda
patent: 4449241 (1984-05-01), Nakayama
patent: 4613229 (1986-09-01), Miyake et al.
patent: 4972233 (1990-11-01), Yamazaki et al.
patent: 4975748 (1990-12-01), Koinuma et al.

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