| 摘要 |
PURPOSE:To prevent the sticking of a toner and to minimize the deterioration in characteristic by forming a coating layer consisting of a specific compd. and a resin on the surface of an inorg. carrier core material thereby having a resin coating layer. CONSTITUTION:A coating layer 2 to be formed on the outside surface of a carrier core material 1 consists of a laminate of a layer 2A of a compd. expressed by the general formula I and a resin layer 2B, by which particularly excellent moisture resistance and durability are obtd. R1 in the formula is an alkyl group or alkenyl group, R2, R3 are alkyl group, alkenyl group, etc. The preferred coating amt. of the compd. and the coating resin is in a range of 0.01-5wt% with the compd. basing on the entire weight of the carrier, and in a range of 0.1-10wt% with the coating resin. The glass transition temp. of the coating resin is preferably at least 60 deg.C. |
