Apparatus for transporting webs of photosensitive material

Details Apparatus for transporting webs of photosensitive material Apparatus for transporting webs of photosensitive material

1979-02-05

1980-02-05

Miller, Jr., George H.

Cleaning and liquid contact with solids

Apparatus

Sequential work treating receptacles or stations with means...

354319, 354324, 134122P, 226108, 226168, 242 55, G03D 506

Patent

active

041870220

ABSTRACT:
Apparatus for transporting exposed films or webs of photographic paper along a helical path through a vessel in a developing machine has a set of parallel rings mounted between and rotated by three shafts which are parallel to the axis of the helical path. The planes of the rings make acute angles with the axis of the helical path, and each ring is rotated about its own axis. The leader of a web which is fed into the space within the rings is engaged by the inner surfaces of successive rings and is transported along the helical path. During transport along such path, the web travels around a stationary or rotating twin-walled foraminous pipe which discharges a pressurized fluid whereby the fluid impinges against the emulsion-coated inner side of the web and urges the web against the inner surfaces of the rings so that the pressure of fluid assists the centrifugal force and cohesion between the web and the rings to maintain the web in the helical path. The shafts have circumferential grooves for portions of the rings, and one of the shafts is movable axially to change the inclination of the rings.

REFERENCES:
patent: 2191850 (1940-02-01), Debrie
patent: 3662665 (1972-05-01), Meeussen et al.
patent: 3885748 (1975-05-01), Costello et al.
patent: 3968510 (1976-07-01), Allen
patent: 4003070 (1977-01-01), Merz et al.
patent: 4025937 (1977-05-01), Lowry et al.

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