Cleaner-less image forming apparatus

Details Cleaner-less image forming apparatus Cleaner-less image forming apparatus

2006-12-04

2010-12-28

Gray, David M (Department: 2852)

Electrophotography

Control of electrophotography process

Control of cleaning

Reexamination Certificate

active

07860420

ABSTRACT:
An image forming apparatus includes an image bearing member; charging means for applying electric charge to toner; a developing device; an intermediary transfer member; a primary transfer member for transferring the toner image from the image bearing member onto the intermediary transfer member; a secondary transfer member for transferring the toner image from the intermediary transfer member onto a recording material; and toner collecting means for collecting the toner remaining on the intermediary transfer member. The apparatus is operable in a collecting mode in which a voltage is applied to the primary transfer member during one full rotation of the image bearing member in a period of non-toner-image-formation such that absolute value of a current through the primary transfer member is larger than an absolute value of a current through the primary transfer member at the time of primary transfer of the toner image.

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