Developer coating apparatus

Details Developer coating apparatus Developer coating apparatus

1990-07-03

1992-05-26

Wityshyn, Michael G.

Coating apparatus

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

Electrostatic and/or electromagnetic attraction or...

118651, 118653, 118638, G03G 1506

Patent

active

051157594

ABSTRACT:
An apparatus is provided for coating a developer on the surface of a substrate of an image printing medium, the apparatus including a developer carrier holding thereon a layer of the developer in a charged state generated by frictional contact therewith, an electrode roller adapted to transport the substrate to and from a transfer region, and an alternating electric field produced between the developer carrier and the electrode roller, urging the developer on the carrier to take flight toward the substrate to form a coated layer of the developer on the surface thereof. With this developer coating apparatus, the developer which is imparted with vibration in the alternating electric field is efficiently coated on the substrate surface.

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patent: 4492178 (1985-01-01), Voirin et al.
patent: 4538900 (1985-09-01), Lutus et al.
patent: 4646677 (1987-03-01), Lounsbury, Jr. et al.
patent: 4769676 (1988-10-01), Mukai et al.
patent: 4803518 (1989-02-01), Haneda et al.
patent: 4865943 (1989-09-01), Wright

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