Development system producing reduced airborne toner contaminatio

Details Development system producing reduced airborne toner contaminatio Development system producing reduced airborne toner contaminatio

1997-07-21

1999-01-26

Braun, Fred L

Electrophotography

Internal machine environment

Particle or contaminant control

399266, 399291, G03G 1508, G03G 2100

Patent

active

058647341

ABSTRACT:
An apparatus for powder cloud development of an electrostatic image in which a donor roll advances toner to a development zone adjacent the image, and in which precipitating electric fields are provided at the entrance and exit of the development zone to redeposit undeveloped toner onto the surface of the doner member, whereby unwanted airborne emissions of toner are substantially reduced.

REFERENCES:
patent: 5289240 (1994-02-01), Wayman
patent: 5311258 (1994-05-01), Brewington et al.
patent: 5360940 (1994-11-01), Hays
patent: 5517287 (1996-05-01), Rodriguez et al.
patent: 5613178 (1997-03-01), Amico

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