| 摘要 |
PURPOSE:To provide the electrophotographic toner compsn. which obviates the adhesion of the toner to a photosensitive body even in the case of formation of the smaller grain size toner while using an org. photosensitive body and can form stable images. CONSTITUTION:This electrophotographic toner compsn. consists of toner particles consisting of at least a binder resin and coloring agents and having <=9mum average grain size and additives is formed by using the fine powder of a metal oxide subjected to a surface treatment with at least one kind of the hydrophobing agents selected from a group of formulas (1), (2) and (3) as the above-mentioned additive. R1Si(X)3 (1) R1R2Si(X)2 (2) R1R2R3Si(X)1 (3) (In the formulas, R1 denotes a substd. or unsubstd. alkyl group of >=113 in terms of mol.wt.; R2 and R3 respectively denote hydrogen, alkyl group and allyl group; X denotes a chlor group, alkoxy group and acetoxy group.) |
