Support for photosensitive materials

Details Support for photosensitive materials Support for photosensitive materials

1991-07-09

1993-01-26

Ryan, Patrick J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

428340, 428341, 428342, 428481, 4285371, 428913, 430531, 430532, 430533, 430538, 162 72, B32B 900

Patent

active

051821613

ABSTRACT:
There is disclosed a support for photosensitive materials which comprises base paper comprising natural kraft pulp, and a resin layer formed on the base paper, said natural kraft pulp being produced by digesting wood chips by the kraft process, and washing the digested product in the presence of an anti-foaming agent or a foam-inhibitor, followed by bleaching by the use of chlorine or an oxidizing agent containing at least one chlorine atom, and said natural kraft pulp having a number of areas tarnished by silver tarnishing reaction of 20 or less. This support exhibits good photographic properties when a silver halide photosensitive layer is provided thereon.

REFERENCES:
patent: 3501298 (1970-03-01), Crawford
patent: 4184912 (1980-01-01), Payton
patent: 4220471 (1980-09-01), Date et al.
patent: 4353981 (1982-10-01), Noda
patent: 4482628 (1984-11-01), Katsura

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