Patent ID: 8529046

Claim:
An ink composition comprising: a pigment that is coated with a water-insoluble resin; particles of a water-insoluble polymer having a glass transition temperature of 100° C. or higher; a solid moistening agent; a water-soluble organic solvent; particles of a wax having a melting point of from 40° C. to lower than 100° C.; water; and a dispersion stabilizer that comprises a compound represented by the following Formula (1): (R 3 ) a -G-(D) d Formula (1) wherein, in Formula (1), R 3 represents an alkyl group having from 10 to 60 carbon atoms, an alkenyl group having from 10 to 60 carbon atoms, an aralkyl group having from 10 to 60 carbon atoms, or an aryl group having from 10 to 60 carbon atoms; G represents a linking group having a valency of from 2 to 7; D represents (B) n -E, wherein B represents —CH 2 CH 2 O—, —CH 2 CH 2 CH 2 O—, —CH(CH 3 )CH 2 O—, or —CH 2 CH(OH)CH 2 O—, n reresents an integer of from 1 to 50 and E represents hydrogen, or an alkyl group having from 1 to 8 carbon atoms, an aryl group having from 1 to 8 carbon atoms, an alkylcarbonyl group having from 1 to 8 carbon atoms, or an arylcarbonyl group having from 1 to 8 carbon atoms; a and d each independently represent an integer of from 1 to 6; and plural R a s, Ds, and Es may be the same as or different from each other, respectively.