Color image forming apparatus and discharging device before...

Details Color image forming apparatus and discharging device before... Color image forming apparatus and discharging device before...

2007-04-24

2007-04-24

Gray, David M. (Department: 2852)

Electrophotography

Image formation

Treatment of developed image prior to transfer

C399S297000, C399S310000, C399S315000

Reexamination Certificate

active

11285589

ABSTRACT:
A color image forming apparatus is described, which makes highly durable image transferring possible. The color image forming apparatus includes: primary transferring devices to transfer unicolor toner images respectively formed on image bearing members onto an intermediate transfer member; a secondary transferring device to transfer the multi-color toner image onto a transfer material; a discharging device before secondary transfer, disposed at a position between a primary transferring device and the secondary transferring device; an electric discharge electrode disposed at a position opposing to the intermediate transfer member; an opposing electrode disposed at a position opposing to the electric discharge electrode while putting the intermediate transfer member between them; and a separating device to make the opposing electrode movable between an operating position at which the opposing electrode contacts the intermediate transfer member and a separating position being apart from the intermediate transfer member.

REFERENCES:
patent: 5150161 (1992-09-01), Bujese
patent: 5565975 (1996-10-01), Kumon et al.
patent: 5905931 (1999-05-01), Shigeta et al.
patent: 10221964 (1998-08-01), None
patent: 10-274892 (1998-10-01), None
patent: 10274892 (1998-10-01), None
patent: 11-052763 (1999-02-01), None
patent: 11-143255 (1999-05-01), None

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