TONER FOR ELECTROSTATIC IMAGE DEVELOPMENT

摘要

PURPOSE:To obtain an image having an excellent visibility and frictional electrification and less tendency for generating a fog by incorporating a zinc complex compd. of an aromatic dicarboxylic acid to the titled toner as a charge controlling agent. CONSTITUTION:The zinc complex compd. is preferably contained 0.5-5pts.wt. per 100pts.wt. of the resin. The zinc complex compd. has the good dispersibility against the resin component and the excellent heat-stability in a melt-kneading and is a colorless and gives a negative charge to the toner. The above describe toner capable of forming a good stable image is obtd. even in the preparation of large numbers of copies for a long period.