| 摘要 |
<p>PURPOSE:To improve a sliding characteristic by forming the stationary cylinder of molded articles of a resin added with a conductive material, exposing this conductive material onto the sliding surface of the stationary cylinder with a magnetic tape and specifying the surface shape of the sliding surface to Ra>0.4. CONSTITUTION:Polycarbonate(PC) is adopted as the base material of the resin to be used and the conductive material added with carbon fibers(CF) is used as the conductive material. The amt. of projection of the CF on the sliding surface of the cylinder and the surface shape of the sliding surface are adjusted by the amt. of the CF to be added and the molding conditions of the cylinder. The relation between the size of the surface shape adjusted by the exposure of the CF and the coefft. of friction is such that the coefft. of friction is confined approximately within 0.2 to 0.3 in an Ra>0.4 range. This coefft. of friction is equal to the coefft. of friction in the case of an aluminum material or below and is confined within a practicable use range. As a result, the increase in the coefft. of friction is obviated by exposing the conductive material added within the resin to the sliding surface until the surface shape of the sliding surface attains Ra>0.4.</p> |
