Patent ID: 8679717

Claim:
A binder resin for a toner comprising a vinyl resin (A), a non-crystalline polyester resin (SN), a saturated crystalline polyester resin (SC), and a metal component (M) containing at least one metal selected from the group consisting of Zn, Ca, Mg, Al and Ba (with the proviso that the metal component excludes metal oxide), wherein the content of said vinyl resin (A) is equal to or more than 65 mass % and equal to or less than 95 mass %, based on the total content of 100 mass % of said vinyl resin (A), said non-crystalline polyester resin (SN) and said saturated crystalline polyester resin (SC), said vinyl resin (A) is composed of a carboxyl group-containing vinyl resin (C), a glycidyl group-containing vinyl resin (E) and a reaction product of the vinyl resins, the ester group concentration of said saturated crystalline polyester resin (SC) is equal to or more than 10.0 mmol/g and equal to or less than 13.5 mmol/g, said non-crystalline polyester resin (SN) is dispersed in an island form in said vinyl resin (A) and said saturated crystalline polyester resin (SC) is contained in the island phase of said non-crystalline polyester resin (SN), said metal component (M) is contained at least in said saturated crystalline polyester resin (SC), and wherein said metal component (M) is added as a fatty acid metal salt represented by the following general formula, (C n H 2n+1 COO) m -M wherein n is an integer of 11 to 22; m is an integer of 2 or 3; and M is a metal selected from Zn, Ca, Mg, Al and Ba.