Polyester resin for toner, electrostatic-image-developing toner, electrostatic image developer, toner cartridge, process cartridge, image forming apparatus, and image forming method

A polyester resin for a toner, comprising:

• a polycondensate of a polyvalent carboxylic acid component and a polyhydric alcoholic component,
• wherein the polyhydric alcoholic component contains a rosin diol represented by the following Formula (1) and one or more of an aromatic alcohol having a structure represented by Formulas (I), (II) and (III) except for the rosin diol,
• a total content of the rosin diol and the aromatic alcohol is 80% by mole to 100% by mole based on a total polyhydric alcoholic component, and
• a content of the rosin diol is 10% by mole to 80% by mole based on the total polyhydric alcoholic component:
• wherein, each of R1 and R2 independently represents a hydrogen atom or a methyl group,
• L1 represents a divalent linking group having the following Formula (I),
• each of L2 and L3 independently represents a divalent linking group selected from the group consisting of carbonyl groups, carboxyl groups, ether groups, sulfonyl groups, substituted or unsubstituted chained alkylene groups, substituted or unsubstituted cyclic alkylene groups, substituted or unsubstituted arylene groups, and combinations thereof;
• and
• A1 and A2 represent a rosin ester group: