Patent ID: 9383670
Filing Date: 2016-07-05
CPC Classification: G03G

Claim Text:
1. A toner comprising: a plurality of toner particles each having the shell layer contains a urea resin, the toner particles have an average circularity of no less than 0.962 and no greater than 0.978, and in a cross section of the toner particle analyzed by EELS, for at least 50% of a circumferential length of the core, the shell layer has one or more portions each satisfying conditions that a longest length among the one or more portions of the shell layer each satisfying the conditions is at least 100 nm, and a greatest thickness among the one or more portions of the shell layer each satisfying the conditions is no less than 5 nm and no greater than 15 nm, where INs indicates an intensity of an N-K shell absorption-edge originating from nitrogen atoms in the shell layer, and INc indicates an intensity of an N-K shell absorption-edge originating from nitrogen atoms in the core.