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US 4,436,809 AGranted
Method for light-shielding a roll photographic film
AssigneeFuji Photo Film Co., Ltd.
InventorsMutsuo Akao, Tadashi Kawata
Life of this patent
Estimating the term…
Abstract
A method for light-shielding a roll photographic film wherein a backing paper comprising a support, a print layer and at least one aluminum layer on the support is employed.
Claims16
In a method for light-shielding a roll photographic film comprising overlaying a backing paper on the roll photographic film and winding together said roll photographic film and backing paper, with the backing paper being located exterior to the roll film, the improvement which comprises the backing paper comprising a support;
- a print layer and at least one aluminum layer provided on the support, said backing paper being 50.mu. to 150.mu. in total thickness.
Dependencies are inferred from the claim text.