Patent ID: 6074761
Filing Date: 2000-06-13
Classification: B41M,Y10T

Abstract:
A printing medium comprising a substrate having at least one surface and a coating on the surface wherein the coating comprises:(a) binder comprising:(1) organic polymer which is substantially free of ammonium groups,(2) first cationic addition polymer consisting essentially of quaternary ammonium-containing mer units and ammonium-free mer units, and(3) second cationic addition polymer consisting essentially of secondary, tertiary, or both secondary and tertiary ammonium-containing mer units and ammonium-free mer units,wherein the binder constitutes from 20 to 90 percent by weight of the coating; and(b) finely divided substantially water-insoluble filler particles which have a maximum dimension of less than 500 nanometers, are distributed throughout the binder, and constitute from 10 to 80 percent by weight of the coating.