Toner

摘要

A toner comprises toner particles each comprising a binder resin having a polyester resin as a main component, wax and colorant. It also comprises a resin component insoluble to tetrahydrofuran in an amount of 5-40 mass% based on a mass of the binder resin, and tetrahydrofuran soluble component. A toner comprises toner particles each comprising a binder resin having a polyester resin as a main component, wax and colorant. In case of measuring a wettability of the toner with respect to a mixed solvent of methanol and water in terms of an optical transmittance at an optical wavelength of 780 nm, methanol concentration of the mixed solvent is 45-65 vol.% when the optical transmittance is 80%, and a methanol concentration of the mixed solvent is 45-65 vol.% when the optical transmittance is 10%. A melt index of the toner measured at 125[deg]C and a load of 5 kg is 0.1-10 g/10 minutes. The toner comprises a resin component insoluble to tetrahydrofuran in an amount of 5-40 mass% based on a mass of the binder resin. It also comprises a tetrahydrofuran soluble component, and in case of measuring the tetrahydrofuran soluble component by gel permeation chromatography, a main peak is in a molecular weight region of 3000-20000 and a proportion of a component having a molecular weight of =10000 in the tetrahydrofuran soluble component is >=50 mass% in a chromatogram of the gel permeation chromatography.