Patent ID: 6881527

Claim:
A toner which comprises at least a polyester resin as a binder resin component, and a colorant, wherein; said toner contains: (a) in the binder resin component, from 20.0% by weight to 65.0% by weight of a tetrahydrofuran-insoluble matter A1 in 6-hour extraction and from 35.0% by weight to 80.0% by weight of a tetrahydrofuran-soluble matter A2 in 6-hour extraction; (b) in the binder resin component, from 10.0% by weight to 30.0% by weight of a tetrahydrofuran-insoluble matter B1 in 16-hour extraction and from 70.0% by weight to 90.0% by weight of a tetrahydrofuran-soluble matter B2 in 16-hour extraction; and (c) in the binder resin component, from 0.5% by weight to 3.0% by weight of an orthodichlorobenzene-insoluble matter C1 in 6-hour extraction at 185° C. and from 97.0% by weight to 99.5% by weight of an orthodichlorobenzene-soluble matter C2 in 6-hour extraction at 185° C.; (d) the proportion of C1 to B1, C1/B1, being from 0.06 to 0.15, and the A1, B1 and C1 satisfying the following expression (1): A1>B1>C1. Expression (1)