Xerographic developer unit having variable pitch auger

Details Xerographic developer unit having variable pitch auger Xerographic developer unit having variable pitch auger

2007-12-25

2007-12-25

Brase, Sandra L. (Department: 2852)

Electrophotography

Image formation

Development

C399S254000

Reexamination Certificate

active

11263369

ABSTRACT:
A developer system, including: a developer housing having a sump containing developer material including toner particles; a developer member rotatably mounted in the housing for transferring toner particles to a latent image on the photoreceptive member in a development zone; a pickup auger, positioned in an auger channel, for transporting and delivering developer material to the developer member, along a path adjacent to the developer member, the pickup auger having a first end portion and a second end portion, and the pickup auger includes a plurality of blades extending along the length of thereof, the plurality of blades being mounted on a core having a core size, the core size being adapted and arranged in the auger channel to maintain a constant developer material distance from the developer member along the length the auger channel.

REFERENCES:
patent: 5204721 (1993-04-01), Sharpe
patent: 5583622 (1996-12-01), Nishimura
patent: 5923933 (1999-07-01), Anzai et al.
patent: 6324369 (2001-11-01), Yamaguchi et al.
patent: 6415125 (2002-07-01), Yamamoto et al.
patent: 6421516 (2002-07-01), Kinoshita et al.
patent: 6546225 (2003-04-01), Wang
patent: 6763214 (2004-07-01), Sugihara
patent: 6973281 (2005-12-01), Hirobe et al.

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