Developing device having variable bias voltages applied...

Details Developing device having variable bias voltages applied... Developing device having variable bias voltages applied...

2006-02-14

2006-02-14

Royer, William J. (Department: 2852)

Electrophotography

Control of electrophotography process

Control of developing

C399S281000, C399S283000, C399S285000

Reexamination Certificate

active

06999691

ABSTRACT:
A developing device used with an electrophotographic image forming apparatus and developing method thereof includes a power supplying unit which applies a first electric field to a toner transfer body and a supplying member so that the toner is supplied to the toner transfer body when a development operation is performed, and applies a second electric field to the toner transfer body and the supplying member so that the toner is removed from the toner transfer body when the development operation is not performed, by varying a developing bias and a supplying bias.

REFERENCES:
patent: 6067427 (2000-05-01), Shin
patent: 6327451 (2001-12-01), Mizuno
patent: 6353720 (2002-03-01), Sakai et al.
patent: 6684047 (2004-01-01), Kin et al.
patent: 2001-142285 (2001-05-01), None
Notice to submit Response and Office Action of Korean Intellectual Property Office.

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