Image forming apparatus

Details Image forming apparatus Image forming apparatus

2009-03-11

2011-10-11

Porta, David (Department: 2884)

Electrophotography

Having particular structure

Modular or displaceable

C399S159000, C399S176000

Reexamination Certificate

active

08036571

ABSTRACT:
An image forming apparatus includes a plurality of image forming units arranged in parallel, each image forming unit having an image carrying member and a charging roller disposed face to face with the image carrying member for electrically charging the image carrying member, and a shifting mechanism for selectively shifting at least one charging roller between a first position where the charging roller is brought into contact with the corresponding image carrying member to electrically charge the image carrying member in contact manner and a second position where the charging roller is moved away from the corresponding image carrying member to electrically charge the image carrying member in non-contact manner.

REFERENCES:
patent: 5572293 (1996-11-01), Kikuchi et al.
patent: 6385427 (2002-05-01), Nakane
patent: 2004/0013448 (2004-01-01), Lee
patent: 2006/0233573 (2006-10-01), Kichijima et al.
patent: 3587094 (2004-02-01), None
patent: 2005-346028 (2005-12-01), None

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