Image forming apparatus and control method thereof

Details Image forming apparatus and control method thereof Image forming apparatus and control method thereof

2009-11-23

2011-11-01

Tran, Hoan (Department: 2884)

Electrophotography

Control of electrophotography process

Control of charging

C399S053000

Reexamination Certificate

active

08050581

ABSTRACT:
An image forming apparatus and a control method thereof are disclosed. A charge unit charges a surface of an organic photo conductor (OPC) to a predetermined electric potential. A developing unit develops an electrostatic latent image formed on the surface of the OPC by coating a developer on the same. A power supply unit supplies power to the charge unit and the developing unit. A control unit regulates the power supplied to the charge unit and the developing unit. After a developing process in the developing unit, the control unit regulates the power applied to at least one of the charge unit and the developing unit so as to collect a residual developer on the surface of the OPC to the developing unit. Accordingly, contamination of the charge unit and the transfer unit can be prevented and an image of a good quality can be achieved.

REFERENCES:
patent: 7593669 (2009-09-01), Shigehiro
patent: 7822356 (2010-10-01), Sakagawa et al.
patent: 7860420 (2010-12-01), Mochizuki
patent: 10-2000-0056309 (2000-09-01), None
English language abstract of KR 10-2000-0056309, published Sep. 15, 2000.

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