Ink compositions containing quaternary-substituted lightfastness agents
AssigneeXerox Corporation
InventorsThomas W. Smith, Kathleen M. McGrane
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Abstract
Disclosed is an ink composition comprising (a) water, (b) an anionic dye, (c) a polyquaternary amine compound, and (d) a quaternary ammonium substituted UV absorbing compound. Another embodiment of the present invention is directed to an ink composition comprising (a) water, (b) a complex of (i) an anionic dye and (ii) a polyquaternary amine compound, and (c) a quaternary ammonium substituted UV absorbing compound.
Claims26
An ink composition comprising (a) water, (b) an anionic dye, (c) a polyquaternary amine compound, and (d) a quaternary ammonium substituted UV absorbing compound.
An ink composition comprising (a) water, (b) a complex of (i) an anionic dye and (ii) a polyquaternary amine compound, and (c) a quaternary ammonium substituted UV absorbing compound.
A process which comprises incorporating into an ink jet printing apparatus an ink composition comprising (a) water, (b) an anionic dye, (c) a polyquaternary amine compound, and (d) a quaternary ammonium substituted UV absorbing compound, and causing droplets of the inks to be ejected in an imagewise pattern onto a recording substrate.
A process which comprises incorporating into an ink jet printing apparatus an ink composition comprising (a) water, (b) a complex of (i) an anionic dye and (ii) a polyquaternary amine compound, and (c) a quaternary ammonium substituted UV absorbing compound, and causing droplets of the inks to be ejected in an imagewise pattern onto a recording substrate.
Dependencies are inferred from the claim text.