| 摘要 |
PURPOSE:To prevent deterioration of an image due to unevenness in rotation by applying a roughening process to the surface of at least one of three rotary bodies, in a rotation transmission drive mechanism used for a copier, a telefax, and a printer. CONSTITUTION:A pulley 3 formed of a magnetic material being a first rotation body is mounted on the one end of a rotary shaft 2 of a light sensitive substance drum 1. A motor 4 being a secondary rotation body is located in a position spaced away by a proper distance, a motor shaft 5 is formed of a magnetic material, and a magnet idler 6 being a third rotation body is located between the pulley 3 and the motor shaft 5 in a magnet it force attracting state on outer peripheral surfaces 3a and 5a of the two members. The magnet idler 6 is formed of a permanent magnet 7 and a yoke 8, and synthetic rubber 9 is thinly wound around the outer peripheral surface 6a. In this case, a roughening process A is applied respectively to the outer peripheral surface 3a of the pulley 3 and the outer peripheral surface 5a of the motor shaft 5. |
