Hydrophilic protective coatings for electroerosion printing

Details Hydrophilic protective coatings for electroerosion printing Hydrophilic protective coatings for electroerosion printing

1984-04-05

1986-10-14

Evans, Arthur G.

Recorders

Record receivers and/or driving means therefor

Laminated, impregnated, or coated bases

346163, 101462, G01D 1506

Patent

active

046175792

ABSTRACT:
Electroerosion recording materials for "direct negative" and "offset master" are provided with a surface protective coating of solid conductive lubricant dispersed in a hydrophilic, crosslinked polymeric matrix. The protective films are especially useful where direct offset masters are produced without removal of non-eroded lubricant film.
The recording medium of this invention provides use as a defect-free "direct negative" and/or "direct offset master", without requiring the removal of the overlayer prior to use on the printing press. The protective coatings are applied from aqueous dispersions of polymer-particulate compositions and thus avoiding the use of organic solvents.

REFERENCES:
patent: 3831179 (1974-08-01), Brill et al.
patent: 4134341 (1979-01-01), Weigele et al.
IBM Tech. Disc. Bulletin vol. 25, No. 7A Dec. 1982, pp. 3194-3195, Graphite-Resin Lamination on Thermal Ribbon by Findlay et al.

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