| 摘要 |
PURPOSE:To load an original around a rotating drum easily and accurately, by providing a locking part at one end of a sheet film fixed to the rotating drum at the other end, and positioning the original through the locking part. CONSTITUTION:A light-transmissive sheet film 3 is set a little bit shorter than the peripheral surface length of a rotating drum 1, and one end part of the film 3 is fixed to the rotating drum 1. At the other end side of the sheet film 3, a hook piece 7 is provided through plural tension springs 6, and a pin 8 provided on the rotating drum engages a groove 7a formed at the center part of the hook piece 7 to fix the sheet and drum. An original form is fitted in the locking part of the sheet film 3, and then positioned and held, thus loading the original form around the rotating drum 1 at an accurate position. |
