| 摘要 |
PURPOSE:To obtain a long-life carrier which is highly resistant to wear and is not spent by providing a silicone resin coating layer contg. glass fibers on the surface of nucleous particles for the carrier. CONSTITUTION:A resin soln. prepd. by dispersing glass fibers of about 0.2-5mu fiber diameter and length pulverized to the size smaller than the film thickness of the coating layer into a silicone resin at 2-30pts.wt. by 100pts.wt. said resin is coated on the surfaces of pearticles consisting of a conventional material such as iron, glass or the like and having 10-1,000mu average grain size as nucleous particles for a carrier, thereby forming the coating layer. The coating layer is formed by using a fluidized bed type coating device, tec. The carrier which is highly resistant to wear, is not spent without sticking of a toner film on the carrier surface in the stage of developing at a high speed and maintains the initial electrifying characteristic for long time is thus obtd. |
