Image forming apparatus

Details Image forming apparatus Image forming apparatus

2008-09-19

2011-11-29

Gray, David (Department: 2852)

Electrophotography

Control of electrophotography process

Control of transfer

C399S302000, C399S303000

Reexamination Certificate

active

08068755

ABSTRACT:
An image forming apparatus is provided in which image forming sections are provided along an intermediate transfer member and in which a test voltage is applied to a transfer member to control a transfer voltage. In the image forming apparatus, the test voltage is applied to a region of the intermediate transfer member in an upstream image forming section. The test voltage is controlled so as to be applied at a time except when that region of the intermediate transfer member passes through a downstream image forming section. Accordingly, when the intermediate transfer member is charged by applying the test voltage to the transfer member in the upstream image forming section, the transfer voltage can be appropriately controlled in the downstream image forming section.

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