TONER BINDER AND TONER

摘要

Provided is a toner binder having excellent charging characteristics and blocking resistance, and an increased range of fixing temperatures when used as a toner. The present invention is a toner binder containing a polyester resin (P) comprising one or more types of polyester resin obtained by polycondensation of a carboxylic acid component (x) and an alcohol component (y), wherein at least one type (P1) of (P) contains 50 to 95 mol% of a C2-4 aliphatic diol (y1) in the alcohol component (y), and (P) satisfies expressions (1) and (2). (1): 11.5 = SP value [(cal/cm3)1/2] of (P) = 13.0 (2): 5.2 = HLB value (by Oda method) of (P) = 7.1