Compositions and methods for improving adhesion of an image to a treated substrate
AssigneeSolenis Technologies, L.P.
InventorDaniel F. Varnell
Life of this patent
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Abstract
Compositions and methods that generally relates to treating a substrate and for improving adhesion of an image to a treated substrate and more particularly relates to systems and methods utilizing a combination of a poly tertiary amide, colloidal silica, and optionally a polymeric binder, for treating a substrate and for improving adhesion of an electrographic image to a treated substrate.
Claims17
A water-based coating composition for treating a liquid electrophotographic printing substrate wherein the water-based coating composition comprises:
- an adhesion promoting polymer;
- a colloidal silica in an amount of from about from about 0.1% to about 1% by dry weight of the substrate;
- and a polymeric binder selected from a polyvinyl alcohol, a starch, a gelatin, a casein, a protein, a carboxy-methyl cellulose, a hydroxyethyl cellulose;
- wherein the adhesion promoting polymer comprises one or more repeating units that includes a tertiary amide group, wherein the tertiary amide repeat units are from about 70 mole % to about 100 mole % of the adhesion promoting polymer;
- and wherein the ratio of the adhesion promoting polymer to the colloidal silica is from about 1:1 to about 1:0.2.
A method for treating a paper substrate for improved liquid electrographic image adhesion comprising:
- a. providing a paper substrate;
- b. applying a water-based composition to the paper substrate at a size press to form a treated substrate, the composition comprising:
- an adhesion promoting polymer containing one or more repeating units that includes a tertiary amide group, and the tertiary amide repeat units are from about 70 mole % to about 100 mole % of the adhesion promoting polymer;
- a colloidal silica in an amount of from about 0.1% to about 1% by dry weight of the substrate;
- and a polymeric binder selected from a polyvinyl alcohol, a starch, a gelatin, a casein, a protein, a carboxy-methyl cellulose, a hydroxyethyl cellulose, an acrylonitrile-butadiene latex, and combinations thereof;
- and wherein the ratio of the adhesion promoting polymer to the colloidal silica is from about 1:1 to about 1:0.2;
- c. drying the treated substrate;
- and
- d. applying a liquid toner to the treated substrate to form the image on the treated substrate.
A method for improving adhesion of an electrographic image to a treated substrate comprising:
- providing a substrate;
- applying a composition to the substrate comprising an adhesion promoting polymer containing one or more repeating units that includes a tertiary amide group, and wherein the tertiary amide repeat units are from about 70 mole % to about 100 mole % of the adhesion promoting polymer;
- and a colloidal silica in an amount of from about 0.1% to about 1% by dry weight of the substrate;
- and wherein the ratio of adhesion promoting polymer to the colloidal silica of from about 1:1 to about 1:0.2 thereby forming the treated substrate;
- applying a liquid toner to the treated substrate to form the electrographic image on the treated substrate.
Dependencies are inferred from the claim text.