Patent ID: 6423370
Filing Date: 2002-07-23
Classification: G03G,Y10T

Abstract:
A method of preparing a transparency comprised of a substrate with two coating layers on the front side and two coating layers on the reverse side of the substrate; wherein said two front side coatings are comprised of a first layer in contact with the substrate, and a second toner receiving coating situated on top of the first coating and wherein the said two coatings in contact with the reverse side of the substrate are comprised of a third coating in contact with the substrate, and a fourth toner receiving coating layer on top of the third coating said method comprising (a) dissolving a coating solution of the first layer in a mixture of two solvents where at least one solvent is a solvent for the coating layer and at least one other solvent is a gelling agent for the coating layer, (b) dissolving a second toner receiving composition in water, (c) coating the two solutions, (d) drying, and (e) coating the third and fourth layers, and drying; and wherein said two coatings on the front side are comprised of a blend of hydroxypropyl hydroxyethyl cellulose, 2,5-dimethoxy-4-morpholinoaniline dihydrochloride and 3-(ethoxy carbonyl)-2-propyl) triphenyl phosphonium bromide.