Image forming apparatus and image forming method capable of...

Details Image forming apparatus and image forming method capable of... Image forming apparatus and image forming method capable of...

2008-11-10

2011-10-25

Gray, David (Department: 2852)

Electrophotography

Control of electrophotography process

Control of transfer

C399S121000, C399S197000, C399S302000

Reexamination Certificate

active

08045875

ABSTRACT:
An image forming apparatus includes an image carrier for carrying a toner image and a transfer device. In the transfer device, a voltage applier applies a predetermined voltage to a transfer electric field generator. A potential measurement device measures a surface potential of the transfer electric field generator when a predetermined time period elapses after the voltage applier applies the predetermined voltage to the transfer electric field generator. A controller determines a transfer bias to be applied by at least one transfer member to the transfer electric field generator based on the measured surface potential of the transfer electric field generator. The at least one transfer member applies the transfer bias to the transfer electric field generator to generate a transfer electric field. The toner image is transferred from the image carrier onto a toner image receiver by the transfer electric field generated by the transfer electric field generator.

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