Toner
Provided is a toner that expresses all of low-temperature fixability, transferability, and scratch resistance at high levels. The toner is a toner including a toner particle containing a binder resin, a wax, and an inorganic fine particle, wherein when an outflow start temperature measured with the toner is represented by T1 (° C.), the inorganic fine particle always has a thermal expansion coefficient of −0.1×10 −6 (/K) or less in a temperature range of from 30° C. or more to T1° C. or less, the thermal expansion coefficient being determined by X-ray diffraction and wherein a content of the wax is 3.0 mass % or more and 20.0 mass % or less with respect to a mass of the toner particle.
1 . A toner, comprising:
a toner particle containing a binder resin, a wax and an inorganic fine particle;
the inorganic fine particle having a number-average particle diameter of 1.3 to 2.0 μm;
a content of the wax being 3.0 to 20.0 mass % with respect to a mass of the toner particle;
the inorganic fine particle comprising a zirconium phosphate tungstate particle or a zirconium phosphate particle; and
a content of the inorganic fine particle in the toner particle being 3.3 to 8.0 vol % with respect to the toner particle, wherein
when an outflow start temperature measured with the toner is represented by T1(° C.), the inorganic fine particle always has a thermal expansion coefficient of −0.1×10 −6 (/K) or less in a temperature range of 30° C. to T1° C., the thermal expansion coefficient being determined by X-ray diffraction, and
2.0≥Ws/Wi≥1.0 when Ws is an area proportion of the wax in a region from a surface of the toner particle to a depth of 500 nm in observation of a section of the toner particle with a transmission electron microscope, and Wi is an area proportion of the wax in a region inside the depth of 500 nm.
2 . The toner according to claim 1 , wherein the inorganic fine particle is zirconium phosphate having negative thermal expansivity.