Image forming apparatus comprising a developer roller

Details Image forming apparatus comprising a developer roller Image forming apparatus comprising a developer roller

2006-04-07

2008-12-16

Gleitz, Ryan (Department: 2852)

Electrophotography

Image formation

Development

C399S167000

Reexamination Certificate

active

07466943

ABSTRACT:
A control part33rotates a developer roller21aat a second rotation speed, which is slower than a normal rotation speed during an image formation period (first rotation speed), during a non-image formation period while a heater14is in use. This prevents deformation of the developer roller21acaused by radiant heat from a photoconductive drum41,effectively prevents the appearance of image fogging, concentration unevenness, and the like, and also suppresses toner deterioration in a development unit21.

REFERENCES:
patent: 4320954 (1982-03-01), Ikeda et al.
patent: 63008773 (1988-01-01), None
patent: 11-174820 (1999-07-01), None
patent: 2002-040887 (2002-02-01), None
patent: 2005010562 (2005-01-01), None

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