Image forming apparatus with control section to control...

Details Image forming apparatus with control section to control... Image forming apparatus with control section to control...

2011-01-11

2011-01-11

Chen, Sophia S (Department: 2852)

Electrophotography

Control of electrophotography process

Control of developing

C399S048000

Reexamination Certificate

active

07869727

ABSTRACT:
High quality images are provided by controlling development conditions based on the proportion of the toner layer potential difference, which a difference between the toner layer potential and electrostatic latent image potential, to the development contrast potential difference, which is a difference between the development bias potential and electrostatic latent image potential. The control section for controlling a development power supply controls the voltage supplied by the development power supply, based on the toner layer potential difference and development contrast potential difference in the development section. This arrangement ensures formation of high-quality images free from concentration of toner.

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Japanese Office Action for Japanese Patent Application No. 2008-034482 mailed Jan. 12, 2010 with English translation.

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