Patent ID: 8936931
Filing Date: 2015-01-20
Classification: D21H,G01N

Abstract:
1. A method of removing oil from and controlling surface wettability of a xerographic print comprising: providing a substrate comprising a toner image area on a surface of the substrate and an oil-containing layer at least partially covering the surface; providing an enzyme-surfactant solution comprising at least one hydrocarbon-degrading enzyme and at least one surfactant; and applying the enzyme-surfactant solution to the surface of the substrate comprising the oil-containing layer to form a treated substrate surface with a water contact angle ranging from about 20° to about 80°, wherein the substrate is treated by the applied enzyme-surfactant solution for a time length ranging from about 10 ms to about 10 s, wherein the treated substrate surface comprises a treated toner image area, and wherein the toner image area comprises toner before and after the enzyme-surfactant solution is applied to the surface of the substrate, and wherein the at least one surfactant is selected from the group consisting of alkylphenol ethoxylates, alkaline metal salts of alkane sulfonic acid, alkanolamines, and mixtures thereof.