Electrographic recording material

Details Electrographic recording material Electrographic recording material

1978-05-26

1979-09-11

Robinson, Ellis P.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

96 15N, 427121, 427180, 428241, 428242, 428262, 428323, 428325, 428331, 428328, 428513, 428514, 428461, 428463, B32B 516, C08L 2506, B32B 2710

Patent

active

041676025

ABSTRACT:
An electrographic recording material comprising a conductive sheet support coated with an electrically insulating layer comprising an intimate blend of a polymeric binder and up to 500 parts of an inert finely divided pigment per 100 parts by weight of polymeric binder. The binder comprises from about 50 to about 90 parts by weight of a styrene interpolymer or a vinyl acetate polymer and a low molecular weight polystyrene or poly(.alpha.-methylstyrene) of relative viscosity determined at 25.degree. C. in ethyl acetate at a concentration of 2 grams per 100 ml of solution in the range of about 1.04 to about 1.15. The electrographic recording material exhibits improved toner adhesion and reduced toner smear.

REFERENCES:
patent: 2377231 (1945-05-01), Hayes
patent: 3307963 (1967-03-01), Webber
patent: 3459593 (1969-08-01), Cole
patent: 3840399 (1974-10-01), Kobayashi
patent: 3946129 (1976-03-01), Jones
patent: 3946140 (1976-03-01), Noe
patent: 3956562 (1976-05-01), Shibata
patent: 3956571 (1976-05-01), Takao
patent: 3991253 (1976-11-01), Markhart

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