Method for light-shielding a photosensitive web end

Patent

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Details

G03B 1726

Patent

active

051593734

ABSTRACT:
In use with a photosensitive web roll located inside a light-tight container having an exit slot through which the web is withdrawable, a flexible enclosure is provided for light-shielding a leading end portion of the web extending from the roll through the slot and outside the container. The enclosure comprises a flexible, substantially rectangular, opaque sleeve adapted to enclose the web end portion. The sleeve includes opposing top and bottom walls disposed in adjacent, registered, facing relationship and extending between front and rear ends and opposite lateral sides thereof. The walls are light-tightly joined together along their front ends and lateral sides, but are left unjoined and separable along their rear ends to provide an opening therebetween through which the web end portion can be inserted into the sleeve toward the joined front ends. The sleeve, with the web end portion so inserted, extends outwardly from within the container, through the exit slot, and thence outside the container, where it is folded back and secured against the container exterior.

REFERENCES:
patent: 681250 (1901-08-01), Niell
patent: 778403 (1904-12-01), Cline
patent: 1454814 (1923-05-01), Jones
patent: 1454815 (1923-05-01), Jones
patent: 1503645 (1924-08-01), Faes
patent: 4455076 (1984-06-01), Birkeland

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