| 摘要 |
PURPOSE:To simplify the structure and fix a sheet onto the surface of a drum with a simple operation, by operating a link and a cam mechanism by the opening and closing operation of a cover and the rotating motion of the drum to attach and detach the sheet. CONSTITUTION:When a cover 11 is rotated clockwise and is opened, a rod 28 is moved upward, and a trailing edge fixing member 6 is pressed upward. Next, when a drum 3 is rotated counterclockwise, a gap is formed between a leading edge fixing member 5 and the drum 3. Under this state, the cover 11 is closed after the leading edge of a sheet is inserted between the fixing member 5 and the surface of the drum 3. The sheet leading edge fixing member 5 fixes the leading edge of the sheet with the force of a tension spring 20. When the drum 3 is rotated clockwise, the sheet trailing edge fixing member 6 is drawn toward a drum shaft 2 with the force of a tension spring 25 to fix the trailing edge of the sheet. |
