device to promote long lichtempflindlicher materialbänder

摘要

PURPOSE:To prevent the snaking of sheet material to be carried, by providing a member having a projection chip for guiding both sides of sheet and performs pendulum motion on the axis on the shaft of carrying roller of sheet material. CONSTITUTION:Long length photographic film, for example, is driven by means of large rollers 6-8 and small rollers 9-14 then guided by free rollers 16-19 and winding preventer 32 into processing tank. Pendulum snaking preventers 21-29 having snaking preventer chip are provided rotatably on the shafts 3, 15 for coupling small and large rollers. Said chip projects to both sides of film to prevent the snaking of film. When a reader is passing said chip is rotated and retreated.