| abstract |
A toner excellent in low temperature fixability and blocking resistance, and a toner binder are provided. The present invention is a toner binder containing a crystalline resin (A) having a maximum peak temperature of heat of fusion (Ta) of 40 to 100° C., a ratio between the softening point and Ta (softening point/Ta) ranging from 0.8 to 1.55, and a melting start temperature (X) within a temperature range of (Ta±30)° C., and satisfying the following requirements; and a toner containing the toner binder and a coloring agent:n [Requirement 1] G′(Ta+20)=50 to 1×10 6 [Pa] [Requirement 2] |log G″(X+20)−log G″(X)|>2.0 [G′: storage elastic modulus [Pa], G″: loss elastic modulus [Pa]]. |