US Patent 11966196 Toner and method for producing toner

A toner comprising a toner particle that comprises a toner base particle and an outermost layer present on the toner base particle surface, the toner base particle containing a binder resin wherein a plurality of concave portions are formed on the toner particle surface, and when T (nm) is an average thickness of the outermost layer in analysis of a cross section of the toner particle as observed with TEM, and a (nm) is a long diameter, b (nm) is a short diameter and d (nm) is a depth of each of the concave portions, respectively, when the concave portions on the toner particle are measured by using SPM from an outermost surface of the outermost layer toward the toner particle center, when “n” represents a number of the concave portions that satisfy specific relationships per 1 μm