Patent attributes
Provided is a toner, including toner particle having surface layer, in which: the surface layer includes organosilicon polymer which has a partial structure represented by formula (1); in 29Si-NMR measurement of tetrahydrofuran-insoluble matter of toner particle, a ratio of a peak area for the partial structure represented by formula (1) to a total peak area for the organosilicon polymer is 5.0% or more; in X-ray photoelectron spectroscopic analysis of a surface of toner particle, a ratio of a density of a silicon atom dSi in the surface of toner particle is 1.0 to 28.6 atom %; and in a roughness curve of toner particle measured by using a scanning probe microscope: an arithmetic average roughness Ra is 10 to 300 nm; σRa/Ra is 0.60 or less; an average length RSm of a roughness curve element is 20 to 500 nm; and σRSm/RSm is 0.60 or less.
