Image forming apparatus

Details Image forming apparatus Image forming apparatus

2009-07-22

2011-10-18

Kim, Kiho (Department: 2884)

Electrophotography

Control of electrophotography process

Control of transfer

Reexamination Certificate

active

08041244

ABSTRACT:
An image forming apparatus includes first and second image forming units respectively including first and second photosensitive members and first and second toner image forming devices for forming a toner image on the first and second photosensitive members respectively, and first and second transfer members configured to transfer the toner image formed on the first and second photosensitive members onto the belt member. The second image forming unit is arranged on a downstream side of the first image forming unit and is adjacent to the first image forming unit. An image forming apparatus further includes first and second photodischarging devices for discharging potential of the first and second photosensitive members respectively by irradiating thereon with light, wherein the first photodischarging device is turned off when the current is detected by applying the voltage to the second transfer member.

REFERENCES:
patent: 4640606 (1987-02-01), Inamoto
patent: 6029022 (2000-02-01), Takase
patent: 6253041 (2001-06-01), Tomizawa et al.
patent: 2006/0083531 (2006-04-01), Shida
patent: 2007/0196118 (2007-08-01), Aoki et al.
patent: 2008/0170867 (2008-07-01), Ahn et al.
patent: 60-147780 (1985-08-01), None
patent: 2001-125338 (2001-05-01), None

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