Patent ID: 8614044

Claim:
A toner comprising toner particles, each of the toner particles comprises a toner base particle containing a binder resin, a colorant and a release agent, and an inorganic fine powder; wherein the toner has an average circularity of 0.960 or more; a number-average molecular weight Mn(25° C.) of a tetrahydrofuran-soluble matter of the toner is in the range of from 500 to 3000, wherein the tetrahydrofuran-soluble matter is extracted by immersing the toner in 25° C. of tetrahydrofuran, and Mn(25° C.) is measured by size extrusion chromatography with multi-angle laser light scattering photometry (SEC-MALLS); and a value of Mn(135° C.)/Mn(25° C.) is in the range of from 25 to 50, wherein Mn(135° C.) is a number-average molecular weight of an o-dichlorobenzene-soluble matter of the toner, the o-dichlorobenzene-soluble matter is extracted when immersing the toner in Mn(135° C.) of o-dichlorobenzene, and Mn(135° C.) is measured by size extrusion chromatography with multi-angle laser light scattering photometry (SEC-MALLS).