A cleaning device for removing dust particles and other impurities from the surface of data carriers such as photographic film. Two counter-rotating brushes sweep across the film surface to remove the impurities while air flows on either side of the film sweep away the impurities. The air flows are created...http://www.google.es/patents/US5255408?utm_source=gb-gplus-sharePatente US5255408 - Photographic film cleaner
