| 摘要 |
PURPOSE:To obtain a toner having positive electrostatic charging property without variance in controllability even if environmental conditions, etc change and further without any disadvantage such as a development fog, scattering of a toner, the fatigue of a developer or the like by incorporating a specific amine deriv. as a charge control agent in a toner. CONSTITUTION:A compd. expressed by the formula [Ar1, Ar2 and Ar3 are a (substd.) arom. carbon ring or arom. heterocyclic ring, the substituent is CH3, OCH3, N(CH3)2, OH, CN, etc.] is incorporated in a toner of a two component or one component type developer at 1-10wt% basing on the weight of the binder resin therein. Therefore, the toner which has excellent positive electrostatic charging property and provides an always stable image irrespectively of the fluctuation in environmental conditions and the condition of the copying paper used is obtained. |
