Patent ID: 8859639

Claim:
An ink set comprising: at least two ink compositions comprising a capsulated colorant, the capsulated colorant comprising: a colorant; and a polymer resin which is coated onto the colorant and has a cross-linked structure, wherein the polymer resin having a cross-linked structure is prepared by polymerizing a composition comprising a polymerizable unsaturated monomer, a cross-linkable monomer, and a chain transfer agent, wherein the ink set comprises one ink composition comprising a capsulated colorant having a gel content of about 30 to about 60 wt. % and one ink composition comprising a capsulated colorant having a gel content of about 70 to about 99 wt. %, wherein the polymerizable unsaturated monomer is at least one selected from unsaturated carboxylic acid, cyanide vinyl monomer, unsaturated carboxylic alkylester, unsaturated carboxylic hydroxyalkyl ester, unsaturated carboxylic amide and its derivatives, aromatic vinyl monomer, methyl vinyl ketone and vinylidene chloride, and wherein the cross-linkable monomer is at least one selected from (meth)acrylate and a vinyl compound other than (meth)acrylate.