Image forming apparatus with control of transfer charge

Details Image forming apparatus with control of transfer charge Image forming apparatus with control of transfer charge

2007-06-19

2007-06-19

Gray, David M. (Department: 2852)

Electrophotography

Control of electrophotography process

Control of transfer

C399S227000, C399S313000, C399S314000

Reexamination Certificate

active

11393902

ABSTRACT:
An electrostatic latent image transferring apparatus applies a transferring bias to a transfer member in a transferring portion, wherein a transferring bias value is determined on the basis of a first detection result detected when the surface of the image bearing member which has passed a portion opposed to the developer carrying member when the developing bias is not applied passes the transferring portion, and a second detection result detected when the surface of the image bearing member which has passed the portion opposed to the developer carrying member when the transferring bias is applied passes the transferring portion.

REFERENCES:
patent: 5291256 (1994-03-01), Kitajima et al.
patent: 5903798 (1999-05-01), Yokogawa et al.
patent: 6223004 (2001-04-01), Kodama
patent: 8-194389 (1996-07-01), None
Chinese Official Action/Search Report dated Nov. 17, 2006 in Chinese Application No. 2004100465946.

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