Patent ID: 8586273

Claim:
A binder resin for a toner comprising a carboxyl group-containing vinyl resin (C), a glycidyl group-containing vinyl resin (E), a reaction product of the vinyl resins and a saturated crystalline polyester (S), wherein said saturated crystalline polyester (S) has a melting point of equal to or more than 75 degrees centigrade and equal to or less than 120 degrees centigrade, a metal component (M) selected from Zn, Ca, Mg, Al and Ba (however, excluding metal oxide) is dispersed in said saturated crystalline polyester (S), and the loss modulus (G″) of said binder resin for a toner at 120 degrees centigrade is equal to or more than 0.3×10 4 Pa and equal to or less than 2.7×10 4 Pa at a measurement frequency of 6.28 rad/sec, and the minimum value of the storage modulus (G′) at equal to or more than 50 degrees centigrade and equal to or less than 200 degrees centigrade is equal to or more than 1.0×10 2 Pa and equal to or less than 1.5×10 4 Pa.