COLORING FINE PARTICLE AND TONER FOR DEVELOPING ELECTROSTATIC IMAGES USING THE SAME

摘要

Coloring fine particles produced by heating spheroidal coloring fine particles with an average fine particle diameter of 1 - 100 .mu.m obtained by suspension polymerization to a temperature of 30.degree. to 200.degree.C, thereby causing the particles to fuse together in a block without completely destroying the particle interfaces, and then crushing the block to substantially the same average particle diameter of the spheroidal coloring particle before melting, an a toner for developing electrostatic images using the same.