Xerographic developer unit having variable pitch auger

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

2007-12-04

2007-12-04

Chen, Sophia S. (Department: 2852)

Electrophotography

Image formation

Development

C366S323000, C399S258000

Reexamination Certificate

active

11263370

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 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: 4129386 (1978-12-01), Rauwendaal
patent: 5963766 (1999-10-01), Okuno et al.
patent: 6546225 (2003-04-01), Wang
patent: 6671476 (2003-12-01), Saiki
patent: 2004/0057755 (2004-03-01), Yamaguchi et al.

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