| 摘要 |
PURPOSE:To carry a paper reliably with high accuracy by providing threaded portions where metal face and rubber face are formed alternatively in thread at the opposite ends of paper feed roller. CONSTITUTION:Threaded portions 28 where metal face 31 and rubber face 33 are formed alternatively in thread are provided at the opposite ends of paper feed roller 6. Consequently, the paper shifted laterally is brough to the inside through the threaded portion 28 and corrected automatically resulting in reliable carrying of paper with high accuracy. |
