| 摘要 |
PURPOSE:To obtain a coating carrier having good adhesive properties to an iron powder core material and improved mechanical strength, by coating a resin coating material in which an epoxyhydroxy hydrocarbon resin and a silicone resin are incorporated to a core material. CONSTITUTION:An epoxy hydrocarbon resin, a silicone resin and if necessary, other resin or an additive are dissolved in a solvent such as toluene, xylene and methyl ethyl ketone to prepare a resin coating film. A core material such as iron powder having 30-200mu particle diameter is dipped in this resin coating material or the core material is fluidized to obtain a carrier for electrophotography by a method such as spraying the resin coating material thereon. The ratio of mixture of the epoxyhydroxy hydrocarbon resin in the resin coating material is 1-50wt% preferably. The iron powder is preferable as the core material and the coating quantity of the resin coating material is preferably 0.05- 2wt% to the core material. |
