Apparatus and method for non-interactive magnetic brush developm

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

1998-01-07

1999-07-27

Moses, R. L.

Electrophotography

Control of electrophotography process

Control of developing

399 9, 399285, G03G 1508

Patent

active

059305541

ABSTRACT:
A development system including a developer transport adapted for depositing developer material on an imaging surface having an electrostatic latent image thereon, including a housing defining a chamber storing a supply of developer material including toner. A donor member is mounted partially in said chamber and spaced from the imaging surface, for transporting toner on an outer surface thereof to a region opposed from the imaging surface. The toner donor member has a magnetic assembly which includes a plurality of poles and a sleeve, enclosing said magnetic assembly and rotating about said magnetic assembly. A sensor measures a magnetic field of said donor roll at a predefined position on said donor roll. A control system generates an electric field continuously optimize the development of toner regardless of the ever changing height of the developer bed.

REFERENCES:
patent: 4862828 (1989-09-01), Kumasaka et al.
patent: 5034775 (1991-07-01), Folkins

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