JP2008158252A5 - - Google Patents

Claims (3)

In toner particles containing at least a binder resin, wax, and a colorant, and toner containing inorganic fine powder,
The binder resin is a styrenic resin, and the methanol concentration when the transmittance is 80% when the wettability of the toner with respect to the mixed solvent of methanol and water is measured at a temperature of 25 ° C. by the transmittance of light having a wavelength of 780 nm. was a D ₂₅ vol%, 40 ° C. If the temperature measured toner wettability to a mixed solvent of methanol and water in the transmittance of light of 780nm wavelength in, D ₄₀ volume methanol concentration at transmittance of 80% %, 0.01 ≦ D ₂₅ −D ₄₀ ≦ 3.00, and 1.00 ≦ D ₂₅ ≦ 60.00. The height of the at charts molecular weight distribution measured by the toner in the toner tetrahydrofuran THF-soluble matter of the gel permeation chromatography (GPC), the molecular weight of the main peak height (M1) H (M1), molecular weight 4000 2. The toner according to claim 1, wherein H (4000): H (M1) = (0.100 to 0.950): 1.000 is satisfied when H is 4000 (4000).   In the molecular weight distribution measured by GPC of the THF-soluble matter in the toner, the integrated value (S1) in the region of molecular weight 300-2500, the integrated value (S2) of molecular weight 2500-15000, and molecular weight 15000-molecular weight 1 million. The ratio with the integrated value (S3) is S1: S2: S3 = (0.01-0.95): 1.00: (1.00-8.00). Or the toner according to 2.