Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Structurally defined
Patent
1991-12-17
1993-06-29
Bowers, Jr., Charles L.
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Structurally defined
354277, 354278, 354281, 354283, G03C 300
Patent
active
052233812
ABSTRACT:
A photographic film package including a film unit and a light-shielding envelope for enclosing the film unit. The film unit has a photographic film sheet, first and second carrier sheets attached to opposite ends of the photographic film sheet, and a light-locking clip. The light-locking clip is attached to the first carrier sheet by caulking, and has a pair of waved clamping portions. The photographic film sheet is enclosed light-tightly in the light-shielding envelope when the clamping portions clamp an open end of the light-shielding envelope. The second carrier sheet is formed in its leading end portion with an opening extending transversely to the second carrier sheet, so that the inward-facing surfaces of the light-shielding envelope are brought into tight contact with each other through the opening when the light-shielding envelop is grasped at a region overlying the opening. After photographing, a leading end portion of the light-shielding envelope is folded as to fold the second carrier sheet along the opening. The folded leading end portion of the envelope is secured to the intermediate portion of the envelope by means of an adhesive tape.
REFERENCES:
patent: 4725865 (1988-02-01), Hoffman, Jr.
patent: 4821054 (1989-04-01), Armbuster et al.
Fukugawa Masafumi
Hara Yoshio
Komiyama Hitoshi
Okada Katsumasa
Bowers Jr. Charles L.
Fuji Photo Film Co. , Ltd.
Huff Mark F.
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