Electrostatic image developing toner

摘要

An electrostatic image developing toner including: a binder resin; a colorant; and a wax, wherein the intensity ratio of an absorbance at 2,850 cm−1 derived from the wax to an absorbance at 828 cm−1 derived from the binder resin, represented by “absorbance derived from the wax/absorbance derived from the binder resin”, is in the range of 0.1 to 0.5, where the absorbances are measured by FTIR-ATR, and the intensity ratio serves as a value for determining the amount of the wax present within 0.3 μm in depth from surfaces of particles of the toner after the toner has been heated to 140° C. and then cooled, and wherein the toner has a storage elastic modulus of 5,000 Pa or greater at 140° C.

主权项

1. An electrostatic image developing toner comprising:
a binder resin; a colorant; a wax, and a wax dispersant in an amount of 10 parts by mass to 300 parts by mass per 100 parts by mass of the wax; wherein an intensity ratio of an absorbance of the wax at 2,850 cm−1 to an absorbance of the binder resin at 828 cm−1 is in a range of 0.1 to 0.5, where the absorbances are measured by FTIR-ATR, and the intensity ratio indicates an amount of the wax present within 0.3 μm in depth from surfaces of particles of the toner after the toner has been heated to 140° C. and then cooled, and wherein the toner has a storage elastic modulus of 5,000 Pa or greater at 140° C.