| abstract |
Toner having a crystalline resin as a binder resin can be fixed at a constant temperature and at a constant speed regardless of the type of paper. In a toner containing at least a crystalline resin as a binder resin, a ratio of a molecular weight of 100,000 or more in a tetrahydrofuran (THF) soluble part of the toner measured by gel permeation chromatography (GPC) is 5% or more. And the weight average molecular weight (Mw) is 20,000 or more and 60,000 or less, and in the diffraction spectrum obtained by the toner X-ray diffractometer, the integrated intensity of the spectrum derived from the crystal structure is (C), non- A toner having a ratio (C) / ((C) + (A)) of 0.13 or more when an integrated intensity of a spectrum derived from a crystal structure is (A). This toner has a ratio (C) where the integrated intensity of the spectrum derived from the crystal structure is (C) and the integrated intensity of the spectrum derived from the amorphous structure is (A) in the diffraction spectrum obtained by the X-ray diffractometer. C) / ((C) + (A)) is preferably 0.13 or more. [Selection figure] None |