公开(公告)号：US5561483A

公开(公告)日：1996-10-01

申请号：US470146

申请日：1995-06-06

申请人： Neil A. Johnson ,  Cy Miller

发明人： Neil A. Johnson ,  Cy Miller

IPC分类号： B08B7/00 ,  G03B1/42 ,  G03D15/00 ,  G03B1/00 ,  A47L1/06

CPC分类号： G03B1/42 ,  B08B7/0028 ,  G03D15/00

摘要： In a rolling loop motion picture apparatus, such as a projector or camera, the movie film is pressed against a film supporting surface disposed within a light path. In order to be cleaned, the film supporting surface is moved out of the light path to an inoperative position opposite a sheet of material formed of an inert polyurethane material to which particulate contaminants adhere. The sheet is moved into contact with the film supporting surface, whereby the particulate contaminants adhere to the sheet. Then the sheet is retracted from the film supporting surface, along with the particulate contaminants. The film is guided between fixed and movable guide surfaces. The movable guide surface is spring-biased downwardly against the top edge of the film and is constrained against horizontal movement.

摘要翻译： 在诸如投影仪或相机的滚动循环电影设备中，电影胶片被压靠在设置在光路内的胶片支撑表面。 为了清洁，薄膜支撑表面从光路移出到与由颗粒污染物粘附的惰性聚氨酯材料形成的材料片相对的不工作位置。 片材移动与膜支撑表面接触，由此颗粒污染物粘附到片材上。 然后片材与颗粒污染物一起从膜支撑表面缩回。 胶片在固定和可移动的导向表面之间引导。 可移动的导向表面被弹性偏压抵靠胶片的顶部边缘并被限制在水平运动上。