Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Structurally defined
Patent
1980-01-15
1981-07-21
Schilling, Richard L.
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Structurally defined
430207, 430209, 430210, 430496, 430497, G03C 148, G03C 176
Patent
active
042799880
ABSTRACT:
In accordance with the present invention, a photographic film unit suitable for exposure and self-processing includes a substantially rigid mount having a central opening therethrough. A premounted film element is supported in the opening recessed between the mount's front and rear surfaces. A strippable cover sheet extends across the front of the film element to form a space for spreading processing liquid. A film support plug is received in the central opening rearwardly of the film element to inhibit the processing liquid from causing the film element to bow away from the cover sheet when the processing liquid is spread. In a preferred embodiment of the present invention, the film unit further includes a stripping sheet having a mask portion between the film element and the cover sheet, a backing sheet on the rear surface of the mount overlying the central opening, and a hinge portion interconnecting the mask portion and the backing sheet. The stripping sheet is opaque, but has an opening in its mask portion in alignment with the opening in the mount. The film support plug is adhered to the backing sheet so that the plug is removed from the mount when the backing sheet is stripped.
REFERENCES:
patent: 3195434 (1965-07-01), Dietz
patent: 3607284 (1971-09-01), Harvey
patent: 3615541 (1971-10-01), Hubert
Eastman Kodak Company
Sales M. S.
Schilling Richard L.
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