Low bead impulse donor loading

Details Low bead impulse donor loading Low bead impulse donor loading

1992-09-28

1994-08-09

Fuller, Benjamin R.

Photocopying

Contact printing

Light boxes

118653, 355253, G03G 1506

Patent

active

053371240

ABSTRACT:
A toner delivery method and apparatus for delivering highly charged toner containing a minimum of wrong sign toner to a donor roll structure. The donor roll structure, in turn, delivers the toner to an image receiver or a DEP printhead structure. A magnetic brush is utilized for loading toner particles on the donor roll structure. A magnetic cleaning brush is provided for redistributing unused toner on the donor roll structure. The donor roll and magnetic brushes are positioned to form a cavity which is filled with developer material which prevents the formation of carrier bead chains.

REFERENCES:
patent: 4385829 (1983-05-01), Nakahata et al.
patent: 4480911 (1984-11-01), Itaya et al.
patent: 4814796 (1989-03-01), Schmidlin
patent: 4982690 (1991-01-01), Funayama
patent: 5172170 (1992-12-01), Hays et al.

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