Perforated processing apparatus and method

Details Perforated processing apparatus and method Perforated processing apparatus and method

1989-11-28

1992-09-01

Mathews, A. A.

354324, G03D 500

Patent

active

051444747

ABSTRACT:
A substantially closed processing station designed to disperse chemicals for uniformly coating or otherwise contacting an emulsion-coated or other surface is disclosed. The station includes opposed chemical chambers, each of which is covered with a perforated film and, optionally, a screen-like material, between which materials the photographic film or other substrate passes. Distension of the upper perforated film ensures contact between the film (or the screen) and the photographic film moving through the station while minimizing the pressure on and resulting abrading of the substrate's surface. Because the matched peripheries of the upper and lower chambers are closely fitted, the processing station is virtually sealed from the surrounding atmosphere and little degradation of the processing chemicals occurs even after extended periods of nonuse.

REFERENCES:
patent: 1928235 (1933-09-01), Taylor
patent: 2404138 (1946-07-01), Mayer
patent: 2587350 (1952-02-01), Maiwald
patent: 2677320 (1954-05-01), Coughlin
patent: 3610131 (1971-10-01), Frick et al.
patent: 3635144 (1972-01-01), Beck
patent: 3643628 (1972-02-01), Sugarman et al.
patent: 3687708 (1972-08-01), Miller
patent: 3727578 (1973-04-01), Saito et al.
patent: 3752054 (1972-08-01), Scanlan
patent: 3774521 (1973-11-01), Beck
patent: 3873988 (1975-05-01), Pfeifer et al.
patent: 3940782 (1976-02-01), Neeb et al.
patent: 4142194 (1979-02-01), Hamlin
patent: 4142790 (1979-03-01), Neeb et al.
patent: 4145135 (1979-03-01), Sara
patent: 4148274 (1979-04-01), Stievenart et al.
patent: 4327987 (1982-05-01), Friar et al.
patent: 4332454 (1982-06-01), Hensel et al.
patent: 4421399 (1983-12-01), Steube
patent: 4736222 (1988-04-01), Stromberg
patent: 4758858 (1988-07-01), Blackman et al.
patent: 4845019 (1989-06-01), Vaughan
patent: 4945934 (1990-08-01), Vaughan
Stong, C. L., "Kitchen-Sink Aerodynamics," The Scientific American, pp. 432-438 (1960).

Affiliated with

Also associated with

Rating

Perforated processing apparatus and method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Perforated processing apparatus and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Perforated processing apparatus and method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-772680