Patent ID: 7811735

Claim:
A toner, comprising: a binder resin comprising a urethane-modified polyester resin or a urea-modified polyester resin in an amount of from 10 to 20% by weight; a release agent; and a colorant, wherein the toner has a core-shell structure and a weight average molecular weight of from 8,000 to 15,000; wherein the toner has a displacement-load curve in which a maximum compression strength is from 0.65 to 1.0 mN and a slope of a line through an origin point and a first shoulder is not less than 1.1 mN/μm; and wherein the toner satisfies the following relationships: RA(P)×0.5>RB(P) and RA(W)×0.5>RB(W); wherein RA(P) represents a weight ratio of the colorant included in the core to the core, RA(W) represents a weight ratio of the release agent included in the core to the core, RB(P) represents a weight ratio of the colorant included in the shell to the shell, and RB(W) represents a weight ratio of the release agent included in the shell to the shell.