A Wringer-Sling Squeegee for Motion-Picture Film Processing Machines

As the speed of processing machines is increased, the problem of carry-over of solution from stage to stage becomes more severe. Air blow-backs or squeegees can be used to reduce the carry-over but they have several disadvantages: continuing cost of air, noise, danger of scratching film, and contamination from airborne chemicals blown off the film. A wringer-sling squeegee, operated by movement of the film itself, eliminates some of the problems of air squeegees and offers advantages for many applications. In operation, the film passes between two rollers. One flangeless roller wrings liquid from the surface of the film and displaces it to the large flanges of the other roller, which slings it away by centrifugal force. The sling roller has a small-diameter hub so that it rotates at relatively high speed. Collection cups enclose the flanges of the sling roller. The efficiency of the device increases with film-transport speed.

Print ISSN

0361-4573

Published

1967-08

Content type

Original Research

DOI

10.5594/J09124