Abstract For trapping and retaining the excess processing fluid distributed between an exposed photosensitive sheet and a second sheet superposed therewith when the two are moved longitudinally between a pair of pressure-applying members to rupture a pod containing an amount of processing fluid in excess of that required to process the exposed latent image, the trailing end of at least one of said sheets is embossed to provide a plurality of protuberances for separating the opposed surfaces of the trailing ends of said sheets as they pass through the pressure-applying members and provide a space for retaining the excess processing solution. While each individual protuberance might be readily compressible, the arrangement of protuberances is such that there is a sufficient number of them between the pressure-applying members at any one time to effect a significant separation of said pressure-applying members for maintaining a separation between the superposed surfaces of the trailing ends of said sheet elements as they pass between the pressure-applying members.
A photographic film unit as defined in claim 1, wherein one of said sheet elements is made of a thin plastic sheet, and the trailing end thereof is embossed to provide said protuberances.
Claim 2
Dependent Claim
25 words
A photographic film unit as defined in claim 1, wherein the trailing ends of each of said sheet elements are embossed to provide said protuberances.
Claim 3
Dependent Claim
50 words
A photographic film unit as defined in claim 1, wherein one of said sheet elements is shorter than the other, and wherein said means for confining excess processing fluid comprises an embossed sheet of thin plastic material attached to and extending beyond the trailing end of said short sheet element.
Claim 4
Dependent Claim
30 words
A photographic film unit as defined in claim 1, wherein the shape of the individual protuberances are humps, said protuberances being arranged in rows extending transversely of said film unit.
Claim 5
Dependent Claim
74 words
A photographic film unit as defined in claim 1, wherein the sheet element having its trailing end embossed is longer than said other sheet element, the trailing end of said embossed sheet element being folded back on itself and over the protuberances to an extent to make the overall length of this sheet element substantially equal to that of the other sheet element and to form a pocket for collecting any excess processing fluid.