Patent ID: 8062821

Claim:
A toner comprising: a binder resin comprising: (I) a unit of a polyester resin I having an amino group at an end; (II) another unit of a polyester resin II having an anion functional group; and a coloring agent; wherein the polyester resin I is prepared by reacting a carboxylic residual group of a polyester with an amine compound, wherein the amine compound is at least one selected from the group consisting of aminoethanol, N-methyl-2-aminoethanol, N,N-dimethyl-2-aminoethanol, N-ethyl-2-aminoethanol, N,N-diethyl-2-aminoethanol, N-methyl-N-ethyl-2-aminoethanol, 3-amino-1-propanol, 3-methylamino-1-propanol, 3-dimethylamino-1-propanol, 1-dimethylamino-2-propanol 3-diethylamino-1-propanol, 1-diethylamino-2-propanol, and 3-dimethylamino-2,2-dimethyl-1 propanol, and wherein the toner is manufactured by (a) dissolving or dispersing the polyester resin I, the polyester resin II and the coloring agent in an organic solvent to obtain an oil phase, (b) dispersing the oil phase in an aqueous medium, (c) removing the organic solvent, and then (d) drying.