| 摘要 |
<p>PURPOSE:To obtain a charge donating agent which can give stable and high charges with little change in electrification property for a long time when the agent is used for a positive-charge toner by using 2-alkylbenzimidazole compd. as an effective component. CONSTITUTION:The charge donating agent contains a benzimidazole compd. having an alkyl group at the second position or its metal complex as the effective component. Further, a compd. expressed by formula I is used as the 2- alkylbenzimidazole compd. In formula I, R1 is an alkyl group. A metal complex of 2-alkylbenzimidazole compd. is obtd. by effecting the reaction of 2- alkylbenzimidazole compd. and metal chloride in water or in an org. solvent at room temp. or while heating, or by melting these materials, and then adding alkali such as sodium hydroxide, etc., to this soln.</p> |
