Image forming apparatus including grooved cam and link...

Details Image forming apparatus including grooved cam and link... Image forming apparatus including grooved cam and link...

2007-02-20

2009-10-06

Gray, David M (Department: 2852)

Electrophotography

Image formation

Transfer

C399S299000, C399S313000

Reexamination Certificate

active

07599651

ABSTRACT:
An image forming apparatus has: an intermediate transfer member to which a toner image developed on a photosensitive material is transferred while the intermediate transfer member rotates plural times; a transfer roller that is provided to be able to move into contact with and apart from the intermediate transfer member and transfers the toner image on the intermediate transfer member to a paper sheet while conveying the paper sheet pressed to the intermediate transfer member; a grooved cam having different grooves formed respectively in front and back surfaces of the grooved cam. A link mechanism for color image printing and a link mechanism for monochrome printing are reciprocated independently from each other, with ends of the link mechanism engaged respectively in the grooves of the grooved cam, thereby to control contact and separation of the transfer roller and the intermediate transfer member.

REFERENCES:
patent: 6041206 (2000-03-01), Park
patent: 2003/0223785 (2003-12-01), Kanekura et al.
patent: 2004-117499 (2004-04-01), None
patent: 2005-091725 (2005-04-01), None

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