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.
A separation pawl for copying machine is composed of a resin composition containing a crystalline polyimide resin A having a repeating unit expressed by formula I and 0.1-3.0 dl/g logarithmic viscosity (ηinh) and a crystalline polyimide resin B having a repeating unit expressed by formula II and 0.1-3.0 dl/g logarithmic viscosity (ηinh) in the ratio A/B by weight of 10/90 to 90/10. And the separation pawl is composed of a fiber reinforced resin composition containing 5-100 pts.wt. fibrous reinforcing material per 100 pts.wt. the crystalline polyimide resin. And at the time of injection molding, the composition is crystallized in the metallic mold. As a result, 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.
YANAGIHARA KAYAKO
YOSHIMURA MASAJI
