Patent ID: 9005862
Filing Date: 2015-04-14
Classification: G03G

Abstract:
1. A toner, comprising: a crystalline polyester resin (A); an amorphous resin (B); and a composite resin (C) having a condensation polymerization resin unit and an addition polymerization resin unit; wherein a molecular weight distribution of the toner based on THF-soluble contents thereof has a main peak within a molecular weight range from 1,000 to 10,000 and a half bandwidth of the main peak is 15,000 or less, the molecular weight distribution being determined by gel permeation chromatography, wherein the toner includes chloroform-insoluble contents, and wherein a ratio C/R of the toner is within a range from 0.03 to 0.55, wherein C and R represent heights of spectrum peaks specific to the crystalline polyester resin (A) and the amorphous resin (B), respectively, determined by a Fourier transform infrared spectroscopic attenuation total reflection method after the toner is stored in a thermostatic chamber at 45° C. for 12 hours.