Apparatus and methods for loading a donor roll

Details Apparatus and methods for loading a donor roll Apparatus and methods for loading a donor roll

2007-03-15

2010-02-09

Gray, David M (Department: 2852)

Electrophotography

Image formation

Development

Reexamination Certificate

active

07660551

ABSTRACT:
An apparatus for loading one or more donor rolls of a developer unit, comprising a developer housing having a reservoir for a developer material, a rotatable first donor roll that delivers the toner onto a moving photoconductive member, a rotatable first magnetic brush roll that receives the developer material from the reservoir and delivers the toner to the first donor roll, and a rotatable second magnetic brush roll that receives the developer material from the first magnetic brush roll and delivers the toner to the first donor roll. The apparatus may further comprise a rotatable second donor roll that receives the toner from the second magnetic brush roll and delivers the toner onto the photoconductive member, and a rotatable third magnetic brush roll that receives the developer material from the second magnetic brush roll and delivers the toner to the second donor roll.

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patent: 2008/0226353 (2008-09-01), Ramesh et al.
Fei “Frank” Xiao, “Numerical Simulation of Developer Abuse,” May 1998, Chongqing, China.

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