Metering assembly for development apparatus

Details Metering assembly for development apparatus Metering assembly for development apparatus

1989-08-29

1990-09-11

Grimley, A. T.

Photocopying

Contact printing

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355253, G03G 1509

Patent

active

049566741

ABSTRACT:
Apparatus for applying developer material to a latent electrostatic image wherein flow of developer material is controlled accurately and without clogging. A rotary feed mechanism delivers developer material from a sump to a magnetic brush, and includes a drive mechanism axially aligned with and drivingly engaged with the feed mechanism. A metering device between the sump and the magnetic brush rotates about an axis substantially co-axial with the rotary feed mechanism between (1) an open position communicating the magnetic brush and the sump and (2) a closed position substantially isolating the magnetic brush from the sump. A drive solenoid is spaced from the metering device, and the drive mechanism is positioned axially between the solenoid and the metering device. The metering device is drivingly connected to the solenoid while at the same time avoiding interference with said drive mechanism since the connecting means extends radially outwardly around the drive mechanism.

REFERENCES:
patent: 4671207 (1987-06-01), Hilbert
patent: 4699495 (1987-10-01), Hilbert
patent: 4748471 (1988-05-01), Adkins

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