Process for applying protective overcoat on printed media
AssigneeEastman Kodak Company
InventorsLee W. Tutt, Scott E. Tunney
Life of this patent
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Abstract
A process of forming an overcoat on a printed image to provide improved stability comprising: a) applying an image layer on a substrate using a liquid ink to form an imaged element; b) either charging the imaged element to a given polarity or applying a voltage across the surface of the element which is attracted to a conductive surface behind the element; c) applying colorless, charged particles to the element which causes them to be electrostatically attracted to the surface of the image layer; and d) heat-fusing the particles to obtain a protective overcoat over the entire surface of the image layer.
Claims5
A process of forming an overcoat on a printed image to provide improved stability comprising the steps of:
- a) forming a liquid ink image on a substrate using an ink jet, offset or gravure process to form an imaged element;
- b) either charging said imaged element to a given polarity or applying a voltage across the surface of said element which is attracted to a conductive surface behind said element;
- c) applying colorless, charged particles to said element which causes the particles to be electrostatically attracted to the surface of said imaged element;
- and
- d) heat-fusing said particles to obtain a protective overcoat over the entire surface of said imaged element.
Dependencies are inferred from the claim text.