Toner, developer, and image forming apparatus

摘要

A toner, wherein the toner has glass transition temperature [Tg1st (toner)] of 20° C. to 50° C., where the glass transition temperature [Tg1st (toner)] is measured in a first heating in differential scanning calorimetry (DSC) of the toner, wherein tetrahydrofuran (THF) insoluble matter of the toner has glass transition temperature [Tg2nd (THF insoluble matter)] of −40° C. to 30° C., where the glass transition temperature [Tg2nd (THF insoluble matter)] is measured in a second heating in differential scanning calorimetry (DSC) of the tetrahydrofuran (THF) insoluble matter, wherein the THF insoluble matter has a storage modulus at 100° C. [G′(100) (THF insoluble matter)] of 1.0×105 Pa to 1.0×107 Pa, and wherein a ratio of a storage modulus of the THF insoluble matter at 40° C. [G′(40) (THF insoluble matter)] to the storage modulus of the THF insoluble matter at 100° C. [G′(100) (THF insoluble matter)] is 3.5×10 or less.

主权项

1. A toner, comprising:
a binder resin; and tetrahydrofuran insoluble matter, wherein the toner has a glass transition temperature Tg1st of 20° C. to 50° C., where the glass transition temperature Tg1st is measured in a first heating in differential scanning calorimetry of the toner, wherein the tetrahydrofuran insoluble matter of the toner has a glass transition temperature Tg2nd of −40° C. to 30° C., where the glass transition temperature Tg2nd is measured in a second heating in differential scanning calorimetry of the tetrahydrofuran insoluble matter, wherein the tetrahydrofuran insoluble matter has a storage modulus at 100° C. of 1.0×105 Pa to 1.0×107 Pa, and wherein a ratio of a storage modulus of the tetrahydrofuran insoluble matter at 40° C. to the storage modulus of the tetrahydrofuran insoluble matter at 100° C. is 3.5×10 or less.