Patent ID: 7677720

Claim:
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.