Patent ID: 6033817
Filing Date: 2000-03-07
Classification: G03G

Abstract:
A toner for developing an electrostatic image comprising toner particles containing at least a binder resin and a colorant, and an inorganic fine powder, wherein;said toner has at least one endothermic peak in the temperature region of 120.degree. C. or below in differential thermal analysis; andsaid toner has, in its particles having particle diameters of 3 .mu.m or larger, not less than 93% by number of particles having a circularity a of at least 0.90 and less than 30% by number of particles having a circularity a of at least 0.98, the circularity being found from the following expression (1):Circularity a=Lo/L (1)wherein Lo represents a circumferential length of a circle having the same projected area as a particle image, and L represents a circumferential length of a projected image of a particle.