Recording materials with new hydrophilic protective coatings...

Details Recording materials with new hydrophilic protective coatings... Recording materials with new hydrophilic protective coatings...

C - Chemistry, Metallurgy

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42/1

C10M 107/24 (2006.01) B41M 5/24 (2006.01) B41N 3/03 (2006.01) C25F 3/02 (2006.01)

Patent

CA 1232135

RECORDING MATERIALS WITH NEW HYDROPHILIC PROTECTIVE COATINGS FOR USE IN ELECTROEROSION PRINTING 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, cross- linked 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.

477501

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