Patent ID: 9639016
Date: 2017-05-02
CPC Classifications: C08G,C08L,G03G

Claim:
1. A toner comprising a polyester resin, the polyester resin including; a polyester resin component A insoluble in tetrahydrofuran; and a polyester resin component B soluble in tetrahydrofuran, wherein the toner has a first glass transition temperature (Tg1st) of from 20° C. to 50° C., measured at a first temperature rising in differential scanning calorimetry (DSC), and satisfies the following formulae (1) and (2): wherein a and b represent weight ratios of the polyester resin component A and the polyester resin component B to a total weight of the polyester resin component A and the polyester resin component B, and satisfy the equation a+b=1; and TgA, TgB and TgAB represent second glass transition temperatures (Tg2nd), measured at a second temperature rising in differential scanning calorimetry, of the polyester resin component A, the polyester resin component B, and a mixture of the polyester resin component A and the polyester resin component B, respectively.