TONER, METHOD FOR MANUFACTURING SAME, AND IMAGING APPARATUS USING SAME

摘要

A toner has a narrow toner particle size distribution and particles of deformed spherical shape. There is also a simple manufacturing method for the toner and an imaging apparatus using the same. The toner particles are characterized in having an average diameter of d (d is in a range of 4-15 .mu.m), and that the volumetric fraction of the particles having a diameter in a range of d ~ 0.2d is equal to or exceeds 90% of the total volume of the particles. Further, when the specific surface area of the toner per 1 cm3 determined by the BET method is expressed by A (m2/g) and the specific gravity of the particles is expressed by D (g/cm3), the A of the particles is in a range expressed by the equation, 7/(D~d) ~ A ~ 10/(D~d). The toner provides improved resolution of the image.