Dichromatic electrophotography using two developer compositions

Details Dichromatic electrophotography using two developer compositions Dichromatic electrophotography using two developer compositions

1982-06-29

1984-02-07

Welsh, John D.

Radiation imagery chemistry: process, composition, or product th

Electric or magnetic imagery, e.g., xerography,...

To produce color reproduction

430100, 430108, 430109, 430120, G03G 1301, G03G 1308, G03G 1322

Patent

active

044304021

ABSTRACT:
A two-component type dry developer for use in dichromatic electrophotography comprising two kinds of developers, said developers each consisting of a toner and a carrier therefor and adapted for the production of a dichromatic image by developing a both positively and negatively electrified electrostatic latent image successively with toners different in polarity and color from each other, wherein one carrier has a triboelectrification property of being electrified positively by friction with either of two toners while the other carrier has a triboelectrification property of being electrified negatively by friction with either of two toners.

REFERENCES:
patent: 3060020 (1962-10-01), Greig
patent: 3901698 (1975-08-01), Fukushima et al.
patent: 3926824 (1975-12-01), Lipani
patent: 4250239 (1981-02-01), Sakai

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