| 摘要 |
PURPOSE:To carry a paper reliably with high accuracy by constructing a face contactable with paper through alternative arrangement of rubber face and metal face of core. CONSTITUTION:The core metal 27 of referential feed roller 6 is threaded in reverse directions then a rubber 28 is adhered to the thread groove thus to form the surface of said roller 6. Consequently, the outerdiameter of said roller 6 is maintained constant by said core metal 27 to produce sufficient frictional force through the rubber face 28 resulting in highly accurate and reliable paper feeding. |
