Electrophotographic device with a bead pickoff arrangement

Details Electrophotographic device with a bead pickoff arrangement Electrophotographic device with a bead pickoff arrangement

1988-04-29

1989-09-19

Braun, Fred L.

Photocopying

Contact printing

Light boxes

118652, 355296, G03G 2100

Patent

active

048686077

ABSTRACT:
A carrier bead pickoff device for removal of carrier beads adhering to a charge retentive surface in an electrophotographic device having at least one developer housing movable into and out of developing position includes a magnet supported on the movable developer housing of the type which is movable into and out of developing position with respect to the photoreceptor. When the developer housing is moved into developing position, the magnet is correspondingly brought into a position closely adjacent to a non-magnetic carrier bead catch supported closely adjacent to the charge retentive surface. Beads are collected at the bead catch and released upon removal of the magnet from proximity to the bead catch. The non-magnetic bead catch may be supported for movement into a bead catching position when the developer housing is brought into developing position, and to a bead releasing position when the developer is removed from developing position and the magnet is removed from its position adjacent the bead catch. When the bead catch is in bead catching position, the magnet is supported so that removed beads are collected at the bead catch by the magnetic force. When the magnet is removed from that position, there is no longer a magnetic force attracting beads to the bead catch, and the movement of the bead catch to a bead release position allows collected beads to fall to a storage location.

REFERENCES:
patent: 3834804 (1974-09-01), Bhagat et al.
patent: 3894513 (1975-07-01), Stanley et al.
patent: 4190351 (1980-02-01), Macaluso et al.
patent: 4210397 (1980-07-01), Macaluso et al.
patent: 4349270 (1982-09-01), Wada et al.
patent: 4552451 (1985-11-01), Yamazaki et al.

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