Fluid applicator doctor blade

Details Fluid applicator doctor blade Fluid applicator doctor blade

1977-06-30

1978-10-10

Hix, L. T.

Optics: motion pictures

Removable film strip magazine type

354 88, 352 78R, 352130, 118415, G03C 1100

Patent

active

041199901

ABSTRACT:
A doctoring surface conformation for applicator nozzle structures in photographic film cassette contained processors by which a coating of processing fluid may be deposited on a moving run of an exposed film strip. The doctoring surface conformation is configured to present a plurality of relatively small entrance channels at the upstream or entrance end thereof and a single exit channel at the downstream or exit end thereof. In the preferred embodiment, the doctoring surface conformation is defined by a plurality of first inclined surfaces extending from the vicinity of the trailing edge of the fluid applicator nozzle and converging in the direction of film strip movement towards the surface of the film. A plurality of second inclined surfaces extending also from the vicinity of the trailing edge of the nozzle opening in close proximity to the film surface and diverging in the direction of film strip movement away from the film surface are provided in alternating, side-by-side relation with the first plurality of inclined surfaces. The arrangement of the two series of inclined surfaces cooperate to present a comb-like arrangement at the leading end of the doctoring surface as viewed from upstream of the doctoring surface in the direction of film strip movement. The doctoring surface conformation is configured so as to produce a positive hydrodynamic force in processing fluid passing under the doctoring surface.

REFERENCES:
patent: 3407786 (1968-10-01), Beyer et al.
patent: 3871013 (1975-03-01), Burke et al.
patent: 3887272 (1975-06-01), Weed
patent: 3951530 (1976-04-01), Czumak et al.

Affiliated with

Also associated with

Rating

Fluid applicator doctor blade does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Fluid applicator doctor blade, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fluid applicator doctor blade will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1769466