Image forming apparatus and method in which a circumferential sp

Details Image forming apparatus and method in which a circumferential sp Image forming apparatus and method in which a circumferential sp

1997-01-29

1998-05-26

Beatty, Robert

Electrophotography

Control of electrophotography process

Control of transfer

399302, G03G 1516

Patent

active

057582262

ABSTRACT:
An image forming apparatus including a charger to charge an intermediate transfer member uniformly after a toner image is transferred from the intermediate transfer member to a transfer sheet or before a toner image is transferred onto the intermediate transfer member from an image carrier, and a controller which, when the intermediate transfer member is being charged with the charger, reduces a circumferential speed of the intermediate transfer member to a speed which is slower than when transferring the toner image from the image carrier to the intermediate transfer member. Nonuniformity of charge on the surface of the intermediate transfer member is eliminated and thereby the occurrence of unsatisfactory transfer of the toner image from the image carrier to the intermediate transfer member is avoided and, consequently, the occurrence of an untransferred streak across an image transferred on a transfer sheet is avoided.

REFERENCES:
patent: 4183658 (1980-01-01), Winthaegen
patent: 5041878 (1991-08-01), Takai et al.
patent: 5189478 (1993-02-01), Hara et al.
patent: 5250999 (1993-10-01), Kimura et al.
patent: 5373354 (1994-12-01), Tadokoro et al.
patent: 5587783 (1996-12-01), Nakamura et al.
patent: 5640645 (1997-06-01), Namekata et al.

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