Structure and method for creating surface texture of compliant coatings on piezo ink jet imaging drums
First Claim
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1. A method of producing an imaging surface for an imaging system useful for inkjet printing, comprising:
- providing a metallic substrate, the imaging surface comprising the metallic substrate;
coating said metallic substrate with an elastomer layer having a chemically-reactive filler or base mixed therewith;
etching said coating with an effective concentration of an acid reactive with the filler or base exposed at the surface of the coating, thereby providing reaction products including water-soluble salt at the surface of the coating; and
forming pits in the coating surface by washing the surface with an aqueous liquid to remove said reaction products, thereby producing a elastomer coated aluminum drum having a textured surface with an average roughness, Ra, of from about 0.2 to about 1.5 microns, a texture density of about 104 to about 107 pits per cm2, each such pit having an opening of from about 0.5 to about 5 microns, and a depth of from about 0.5 to about 10 microns.
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Abstract
This is structure and method for providing a textured surfaced that can be used in a plurality of systems including ink jet printing. In ink jet printing, the textured surface of this invention controls ink drawback and significantly improves image quality. The textured surface has an average roughness, Ra, of about 0.2 to 1.5 microns, a texture density of about 104-107 pits per cm2, a texture size of about 0.5-5 microns, and a texture depth of about 0.5-10 microns.
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Citations
8 Claims
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1. A method of producing an imaging surface for an imaging system useful for inkjet printing, comprising:
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providing a metallic substrate, the imaging surface comprising the metallic substrate; coating said metallic substrate with an elastomer layer having a chemically-reactive filler or base mixed therewith; etching said coating with an effective concentration of an acid reactive with the filler or base exposed at the surface of the coating, thereby providing reaction products including water-soluble salt at the surface of the coating; and forming pits in the coating surface by washing the surface with an aqueous liquid to remove said reaction products, thereby producing a elastomer coated aluminum drum having a textured surface with an average roughness, Ra, of from about 0.2 to about 1.5 microns, a texture density of about 104 to about 107 pits per cm2, each such pit having an opening of from about 0.5 to about 5 microns, and a depth of from about 0.5 to about 10 microns. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A fusing surface structure of an elastomeric coating on an imaging surface comprising a metallic substrate that is configured to receive an application of a thin film of a release fluid, said surface being a pitted surface comprising the following characteristics:
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an average roughness, Ra, of from about 0.2 to about 1.5 microns; a texture density of from about 104 to about 107 pits per cm2; each said pit having an opening of a size from about 0.5 to about 5 microns, and a depth of from about 0.5 to about 10 microns.
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Specification