Image forming apparatus including pressing unit to maintain...

Details Image forming apparatus including pressing unit to maintain... Image forming apparatus including pressing unit to maintain...

2008-09-16

2011-11-08

Gray, David (Department: 2852)

Electrophotography

Image formation

Development

C399S117000, C399S119000, C399S258000, C399S281000, C399S286000

Reexamination Certificate

active

08055167

ABSTRACT:
An image forming apparatus is disclosed. The image forming apparatus includes a photosensitive body, a magnetic roller disposed at a predetermined distance from the photosensitive body, and a donor roller disposed between the photosensitive body and the magnetic roller. The donor roller has a diameter larger than the closest distance between the photosensitive body and the magnetic roller. The image forming apparatus includes gap rings and pressing device to maintain desired gaps between the magnetic roller and the donor roller and between the donor roller and the photosensitive body.

REFERENCES:
patent: 5739900 (1998-04-01), Isobe
patent: 2005-107222 (2005-04-01), None
English language abstract of JP 2005-107222, published Apr. 21, 2005.
Machine English language translation of JP 2005-107222, published Apr. 21, 2005.

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