Method and apparatus for image forming capable of performing...

Details Method and apparatus for image forming capable of performing... Method and apparatus for image forming capable of performing...

2007-06-05

2007-06-05

Gray, David M. (Department: 2852)

Electrophotography

Image formation

Development

C399S120000, C399S256000

Reexamination Certificate

active

11153538

ABSTRACT:
An image forming method and apparatus includes a development device in which two rotary shafts enclosed in respective separate chambers for spirally circulating the developer between the two chambers to supply the developer to a development roller. The development device is provided with an extended circulation enclosure having a fill opening communicating with the two chambers.

REFERENCES:
patent: 5655193 (1997-08-01), Fujishiro et al.
patent: 5794108 (1998-08-01), Yoshizawa et al.
patent: 5970290 (1999-10-01), Yoshiki et al.
patent: 6421516 (2002-07-01), Kinoshita et al.
patent: 6987940 (2006-01-01), Tamura
patent: 2001-215780 (2001-08-01), None
U.S. Appl. No. 11/353,119, filed Feb. 14, 2006, Imamura.

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