| 摘要 |
<p>PURPOSE:To improve sliding characteristics of a flat pelt drive roller such as reduction in frictional resistance, stabilization of frictional coefficient, etc., according to variation in temperature, humidity, etc., in an electrophotographic device. CONSTITUTION:Multiple short fibers F, F,... are mixed into the surface portion of a roller 13 for driving a flat belt 11, oriented roughly in axial direction of the roller 13, and a part of it is exposed from the surface of the roller. The flat belt 11 is driven by a grip force of the exposed short fibers F, F,... to reduce a coefficient of friction and stabilize the frictional characteristics according to variation in temperature and humidity. The short fibers F, F... may be oriented so that they have a specified inclination relative to axial and circumferential directions. By providing a belt guide members 18, 18 on the roller and/or flat belt, specially accurate belt driving is enabled.</p> |
