Developing roller for a developing unit with transport, develop

Details Developing roller for a developing unit with transport, develop Developing roller for a developing unit with transport, develop

1990-08-21

1991-10-01

Grimley, A. T.

Coating apparatus

With means to apply electrical and/or radiant energy to work...

With electromagnetic and/or electrostatic removal of...

355251, 355253, G03G 1509

Patent

active

050523368

ABSTRACT:
A developing roller for a developing unit of an image forming apparatus has at least a magnet with a transport pole, a magnet with a develop pole, and a magnet with a collect pole. These magnets are accommodated in a rotary sleeve and affixed to a support member. The magnet with the develop pole is dimensioned longer than the other magnets as measured in the axial direction of the roller. The developing roller surely collects a developer of a magnet brush remaining on the roller after development, and thereby frees the interior of the apparatus from contamination ascribable to the developer.

REFERENCES:
patent: 3626898 (1971-12-01), Gawron
patent: 3977361 (1976-08-01), Nagashima et al.
patent: 4679527 (1987-07-01), Chang
patent: 4806971 (1989-02-01), Masham

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