Chemically-modified coatings for enhanced performance of ink-jet images
AssigneeHewlett-Packard Development Company, L.P.
InventorsKent D. Vincent, Sivapackia Ganapathiappan, Sean Xiao-An Zhang, Palitha Wickramanayake
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Abstract
Ceramic pigment-based, chemically-modified porous coatings can be used for enhancing image permanence of ink-jet image printing. Specifically, a porous coated media sheet, comprising a media substrate, having a porous coating coated thereon comprising a modified ceramic pigment including a fixer group and a stabilizer group, each covalently attached to the ceramic pigment is disclosed. Additionally, a method and system for preparing permanent ink-jet images is also provided.
Claims16
A method of enhancing image permanence of ink-jet images printed on ink-jet media, comprising:
- (a) modifying a surface of a ceramic pigment with a modifying group including a fixer group and a photo-stabilizer group;
- (b) coating a media substrate with the ceramic pigment to form a coated media substrate;
- and
- (c) ink-jetting an ink-jet ink in the form of an image on the coated media substrate, wherein a composition of the ink-jet ink is interactive with at least one modifying group, thereby providing enhanced image permanence;
- wherein the modifying group is attached to the ceramic pigment surface through a spacer group selected from a silane group, a siloxane group and a combination thereof;
- wherein the fixer group includes 5-amino-1-pentanol hydrochloride;
- and wherein the photo-stabilizer group includes 2,2,6,6-tetramethyl-4-piperidinol photo-stabilizer.
A system for producing permanent ink-jet ink images, comprising:
- (a) a media substrate, having a porous coating coated thereon, said porous coating comprising a modified ceramic pigment, the ceramic pigment being modified with a covalently-attached modifying group including a fixer group and a photo-stabilizer group;
- and
- (b) an ink-jet ink comprising a composition configured for interacting with the modifying group portion of the modified ceramic pigment upon printing the ink-jet ink onto the porous coating;
- wherein the modifying group is attached to the ceramic pigment surface through a spacer group selected from a silane group, a siloxane group and a combination thereof;
- wherein the fixer group includes 5-amino-1-pentanol hydrochloride;
- and wherein the photo-stabilizer group includes 2,2,6,6-tetramethyl-4-piperidinol photo-stabilizer.
Dependencies are inferred from the claim text.