Electrophoretic developers

Details Electrophoretic developers Electrophoretic developers

1977-07-20

1979-07-17

Goolkasian, John T.

Compositions

Electrolytes for electrical devices

96 1LY, 260 23S, 260 23ST, G03G 912

Patent

active

041614534

ABSTRACT:
A liquid developer composition suitable for use in developing electrostatic charge patterns, which composition contains in an electrically insulating non-polar carrier liquid a dispersed particulate coloring substance, at least one charge control substances, a copolymer (I) precoating the coloring substance particles in a weight ratio of copolymer (I) to coloring substance between 1:1 and 9:1 and a copolymer (II) in the carrier liquid in a weight ratio of copolymer (II) to coloring substance between 0.5:1 and 5:1,

REFERENCES:
patent: 2940946 (1960-06-01), Shokal et al.
patent: 3623986 (1971-11-01), Machida et al.
patent: 3668127 (1972-06-01), Machida et al.
patent: 3909433 (1975-09-01), Gilliams et al.

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