Apparatus and method for non-interactive magnetic brush...

Details Apparatus and method for non-interactive magnetic brush... Apparatus and method for non-interactive magnetic brush...

2006-04-18

2006-04-18

Grimley, Arthur T. (Department: 2852)

Electrophotography

Image formation

Development

C399S267000

Reexamination Certificate

active

07031645

ABSTRACT:
In a development system including a developer transport adapted for depositing developer material on an imaging surface having an electrostatic latent image thereon, comprising: a housing defining a chamber storing a supply of developer material comprising carrier and toner; a donor member, mounted partially in the chamber and spaced from the imaging surface, for transporting developer on an outer surface thereof to a region opposed from the imaging surface, the donor member having a magnetic assembly having a plurality of poles, a sleeve, enclosing the magnetic assembly, rotating about the magnetic assembly; a developer bed height of the developer material produce by the rotation of the magnetic assembly on the donor member to a predefined developer bed height within a development nip; and a grid, spaced and interposed between the donor member and the charge retentive surface, the grid having being dispose longitudinal with respect to the charge retentive surface and the donor member, the grid being spaced such that developer bed contacts the grid.

REFERENCES:
patent: 5742884 (1998-04-01), Germain et al.
patent: 6088562 (2000-07-01), Belkhir et al.
patent: 6775504 (2004-08-01), Godlove et al.

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