SEPARATION PAWL FOR COPYING MACHINE COMPOSED OF POLYIMIDE RESIN CRYSTALLIZING IN METALLIC MOLD

PROBLEM TO BE SOLVED: To improve surface smoothness and sliding property, to eliminate the need of after-anneal and to reduce production cost by using a resin composition containing a specific thermoplastic crystalline polyimide resin crystallizing in a metallic mold. SOLUTION: A separation pawl for copying machine is composed of the crystalline polyimide resin having a repeating unit expressed by the formula and 0.1-3.0 dl/g logarithmic viscosity (ηinh). And the separation pawl is composed of a fiber reinforced resin composition containing 5-100 pts.wt. fibrous reinforcing material per 100 pts.wt. crystalline polyimide resin. And at the time of injection molding, the composition is crystallized in the metallic mold. By attaining the crystallization in the metallic mold, the heat resistance of the crystalline polyimide resin of its own is exhibited and a molding small in the dimensional change caused by a technique such as after-crystallization is obtained. That is, the tip shape, which is a key point of the separation pawl, is accurately molded and the separation actin for copying machine is surely improved.