Patent ID: 8029960

Claim:
A toner, comprising: (A) a parent particulate material, comprising: (a1) a colorant, and (a2) a binder resin; and (B1) from 0.03 to 2% by number of a first external additive, comprising particles having an average primary particle diameter not less than 80 and less than 150 nm; (B2) from 50 to 95% by number of a second external additive, comprising particles having an average primary particle diameter not less than 5 nm and less than 15 nm; and (B3) from 5 to 40% by number of a third external additive, comprising particles having an average primary particle diameter not less than 15 and less than 40 nm, wherein the particles of the first external additive (B1) comprise from 10 to 30% by number of particles (b 1.1) having a particle diameter not less than 200 nm, based on a total number of particles in the first additive (B1), wherein number percentages for (B1), (B2), and (B3) are based on a total number of particles present in all of (B1), (B2), and (B3), wherein the particles of the first external additive (B1) have a weight reduction rate not greater than 3.00% when heated from 30 to 250° C., and wherein the toner is suitable for developing an electrostatic latent image.