Patent ID: 7973118

Claim:
Ink receiving particles comprising polymer particles, the polymer particles comprising a resin including an acidic group, a polyoxyethylene chain and a polyoxypropylene chain, the acidic group at least partially having a salt structure, wherein the resin contained in the polymer particles is a copolymer including the following structural unit (A) and structural unit (B): wherein, in the structural unit (A) and the structural unit (B), R 1 and R 2 each independently represent a hydrogen atom or a methyl group; n represents an integer of from 1 to 18: m represents an integer of from 1 to 30; l represents an integer of from 1 to 18; X 30 +represents an alkali metal ion, an alkaline earth metal ion, or a quaternary ammonium ion; and Y represents an alkyl group having 1 to 30 carbon atoms or an aryl group having 6 to 18 carbon atoms.