CHARGE CONTROL AGENT AND TONER FOR ELECTROSTATIC IMAGE DEVELOPMENT AND IMAGE FORMATION PROCESS

摘要

An electric charge controlling agent which comprises agglomerates containing an azo type iron complex salt represented by the following chemical formula [VI]: [VI] wherein B+ is (H+)x(Na+)1-x where x = 0.6 to 0.9 or is(H+)y(Na+)1 -y where y = 0 to 0.2, wherein the above agglomerates have an average particle diameter of 0.5 to 5.0 .mu.m; a toner for developing an electrostatic image comprising the charge controlling agent and a resin for a toner; and a metho d for forming an image of an electrostatic photograph which comprises a step o f developing an electrostatic latent image with a developer containing the ton er.