Patent ID: 8709693

Claim:
A polyester resin for a toner which is a polycondensate of a dicarboxylic acid component and an alcohol component including rosin diol that is represented by the following formula (1), and has a weight average molecular weight (Mw) of from 40000 to 150000, and a molecular weight distribution (Mw/Mn) of from 12 to 25, wherein R 1 and R 2 each independently represents hydrogen or a methyl group; L 1 represents a linking group selected from the group consisting of L 2 and L 3 each independently represents a divalent linking group selected from the group consisting of a carbonyl group, a carboxyl group, an ether group, a sulfonyl group, a chain-like alkylene group which may have a substituent, a cyclic alkylene group which may have a substituent, an arylene group which may have a substituent, and combinations thereof; and A 1 and A 2 represent a rosin ester group.