| 摘要 |
PURPOSE:To correct the displacement and zigzagging of an endless belt in the direction of the shaft of a body of revolution by providing a photoreceptor belt used for a microfilm printer, etc., with a displacing means for displacing the body of revolution in such a direction that the extended and supported endless belt is loosened. CONSTITUTION:A photoreceptor belt 1 when running in contact with the flange 30 of a roller 3 by being displaced to an end part in a roller shaft direction is further diaplaced and floats. At this time, when the photoreceptor 1 is loosened through the operation of cams 26 and 27, the photoreceptor 1 is placed in a free state and the part floating in contact with the flange 30 is pressed back by the flange 30 to the center part of the roller 30. Even after the belt 1 is loosened while the bent does not zigzag, the belt 1 is extended and supported again at the position. |
