Toner for developing electrostatic images

摘要

A toner for developing an electrostatic latent image, which includes ground toner particles having physical properties meeting with at least one of the following conditions (a) and (b): (a) the toner particles have an average surface roughness of at least 0.89, the average suface roughness being an average of SF1 of respective toner particles, where SF1 is defined as follows:SF1=Le/Lp wherein Le and Lp represent the length of the minimum envelope line and the peripheral length of each toner particle, respectively; (b) the toner particles have an average shape index SF3 of at least 0.63, the average shape index being a product of the average of SF1 and an average of SF2, where SF1 is as defined above and SF2 is defined as follows:SF2=4S/(P2x pi ) wherein S and P represent the area and the maximum diameter of each toner particle, respectively.