| abstract |
(57) [PROBLEMS] To obtain a color toner binder resin having good heat-resistant storage stability, low fixing lower limit temperature and lower color mixing lower limit temperature, and wide temperature range between hot offset occurrence temperatures when made into a toner. SOLUTION: Obtained from 64 parts of PO adduct of bisphenol A (hydroxyl value 320), 544 parts of EO of bisphenol A (hydroxyl value 343), 123 parts of terephthalic acid and 296 parts of dodecenylsuccinic anhydride, and Tg At 48 ° C, number average molecular weight of 9000, weight average molecular weight of 2 2000 linear polyester. |