Image forming apparatus with settable peak to peak voltages...

Details Image forming apparatus with settable peak to peak voltages... Image forming apparatus with settable peak to peak voltages...

2005-09-27

2005-09-27

Grainger, Quana M. (Department: 2852)

Electrophotography

Supplemental electrophotographic process

Exposure or charging

Reexamination Certificate

active

06950620

ABSTRACT:
An image forming apparatus including: an image bearing member; an electrifying unit for electrifying the image bearing member at a contact portion in order to form an electrostatic image on the image bearing member, a voltage, in which a direct-current voltage and an alternating-current voltage are superimposed on each other, being applied to the electrifying unit; and a developing unit for developing the electrostatic image on the image bearing member using toner; where after a toner image on the image bearing member is transferred onto a transferring medium, residual toner residing on the image bearing member is carried to the contact portion in accordance with rotation of the image bearing member, and a peak to peak voltage of the alternating-current voltage applied to the electrifying unit in order to discharge the residual toner adhering to the electrifying unit to the image bearing member during a certain period of non-image forming is set so as to be higher than a peak to peak voltage applied during image forming.

REFERENCES:
patent: 5689778 (1997-11-01), Hayakawa et al.
patent: 5701559 (1997-12-01), Ootaka et al.
patent: 5845172 (1998-12-01), Saito et al.
patent: 6421512 (2002-07-01), Watanabe et al.
patent: 2003/0059231 (2003-03-01), Watanabe et al.
patent: 2003/0077088 (2003-04-01), Adachi et al.
patent: 5-241427 (1993-09-01), None
patent: 7-92778 (1995-04-01), None
patent: 2000-242062 (2000-09-01), None
patent: 2000-293015 (2000-10-01), None
patent: 2001-100592 (2001-04-01), None
patent: 2001-272847 (2001-10-01), None
Computer translation of Japanese publication 2001-272847A.

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