Photographic processing method
AssigneePolaroid Corporation
InventorsArthur H. Clough, Michael G. Dowling, David R. Gildea
Life of this patent
Estimating the term…
Abstract
A method for photographic processing of an exposed photosensitive film wherein a plurality of photographic processing elements comprising a carrier layer and a photographic processing layer containing photographic processing material are brought into contact, consecutively, with the exposed photosensitive film whereby a visible image is formed in the film. Each photographic processing element is initially brought into contact with the photosensitive film with the application of pressure and the processing element and the film are allowed to remain in contact with each other for a required period of time, during which at least one, and preferably a plurality of, additional pressure applications are carried out.
Claims17
A method for forming a visible image in an exposed silver halide photosensitive film comprising the steps of:
- (a) bringing an exposed silver halide photosensitive film which is capable of forming a visible multicolor image into contact with a first photographic processing element with the application of pressure by pressure-applying means comprising a roller applying a force in the range of from about 2 to about 10 pounds per linear inch (pli), said first photographic processing element comprising a carrier layer and an absorbent layer containing silver halide developing material;
- (b) maintaining said photosensitive film and said first photographic processing element in contact for a predetermined photographic development period and performing at least one additional pressure application step during said photographic development period with pressure-applying means comprising a roller applying a force in the range of from about 2 to about 10 pli;
- (c) separating said first photographic processing element from said photosensitive film;
- (d) bringing said photosensitive film into contact with a second photographic processing element with the application of pressure by pressure-applying means comprising a roller applying a force in the range of from about 2 to about 10 pli, said second photographic processing element comprising a carrier layer and an absorbent layer containing silver halide processing material;
- (e) maintaining said photosensitive film and said second photographic processing element in contact for a predetermined photographic processing period and performing at least one additional pressure application step during said photographic processing period with pressure-applying means comprising a roller applying a force in the range of from about 2 to about 10 pli;
- and
- (f) separating said second photographic processing element from said film whereby a visible image is formed in said silver halide photosensitive film.
Dependencies are inferred from the claim text.