Image forming apparatus featuring an image bearing member...

Details Image forming apparatus featuring an image bearing member... Image forming apparatus featuring an image bearing member...

2007-03-20

2007-03-20

Grainger, Quana (Department: 2852)

Electrophotography

Image formation

Combined or plural functions by single component

Reexamination Certificate

active

10268723

ABSTRACT:
The invention provides an image forming apparatus provided with an image bearing body, and developer charge providing device for providing a charge thereby charging residual developer, remaining on the image bearing body after image transfer, to a normal polarity. The developer charge providing device charges an area of the image bearing body, and such area is further charged by the charging device. When the voltage applied to the developer charge providing device for charging such area is, varied, the voltage applied to the charging means for charging such area is also varied. Thus the image forming apparatus can execute uniform charging in stable manner over a prolonged period.

REFERENCES:
patent: 5765076 (1998-06-01), Ogata et al.
patent: 5832336 (1998-11-01), Kawasaki et al.
patent: 6215967 (2001-04-01), Takeda et al.
patent: 6415127 (2002-07-01), Yamamoto et al.
patent: 6421512 (2002-07-01), Watanabe et al.
patent: 2005/0249515 (2005-11-01), Furukawa et al.

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