Electrostatic printing medium

Details Electrostatic printing medium Electrostatic printing medium

1979-11-30

1981-10-06

Smith, Ronald H.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

428286, 428462, 428511, 430 62, 430 68, 430 69, B32B 700

Patent

active

042936101

ABSTRACT:
An improved aqueous process for making a conductive medium for electrostatic printing and the conductive medium therefrom, the process comprising applying to one side of a high density basestock a partially insolubilizable aqueous conductive latex precoat, preferably ranging in coat weight from 0.5 to 1.0 pounds per 3000 ft.sup.2, the insolubilization of the conductive latex resulting from a partial insolubilization of the major conductive component of the latex; applying to the other side of the basestock a first aqueous low-resistance conductive precoat preferably having a coat weight of about 2 pounds per 3000 ft.sup.2 ; partially insolubilizing the conductive latex precoat; applying to the partially insolubilized latex precoat an aqueous dielectric coating preferably ranging in coat weight from 4.5 to 6.5 pounds per 3000 ft.sup.2 ; and applying to the first low-resistance precoat a second aqueous low-resistance conductive coating preferably ranging in coat weight from 0.5 to 1.5 pounds per 3000 ft.sup.2. The conductive paper comprises on the one side of a high density basestock a partially insolubilized aqueous conductive latex layer, preferably ranging in weight from 0.5 to 1.0 pounds per 3000 ft.sup.2, the insolubilization of the conductive latex resulting from a partial insolubilization of the major conductive component of the latex and on top thereof a dielectric layer preferably ranging in weight from 4.5 to 6.5 pounds per 3000 ft.sup.2 and comprises on the other side of the basestock at least two aqueous conductive layers, preferably having a total weight of from about 2.5 to 3.5 pounds per 3000 ft.sup.2.

REFERENCES:
patent: 3672988 (1972-06-01), Tamai et al.
patent: 3708289 (1973-01-01), Timmerman et al.
patent: 3784401 (1974-01-01), Wheelock
patent: 3880793 (1975-04-01), Nakayama
patent: 3898185 (1975-08-01), Philp et al.
patent: 3900319 (1975-08-01), Miller
patent: 4081584 (1978-03-01), Akiyama et al.
patent: 4120720 (1978-11-01), Gross
patent: 4148639 (1979-04-01), Sinkovitz et al.
Cymel 300-301, Technical Bulletin, American Cyanamid Co., Industrial Chem. and Plastics Div., Wayne, N.J.

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