Silver halide photographic material comprising spacing particles

Details Silver halide photographic material comprising spacing particles Silver halide photographic material comprising spacing particles

1996-01-29

1998-05-19

Huff, Mark F.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Structurally defined

430531, 430536, 430537, 430523, 430950, 430961, G03C 176, G03C 195

Patent

active

057534250

ABSTRACT:
A silver halide photographic material is provided comprising at least one silver halide emulsion layer and an outermost layer comprising an hydrophillic binder and polymeric spacing particles characterized in that
(i) the outermost layer has a thickness between 0.3 to 0.9 pm and
(ii) the polymeric spacing particles comprise at the surface alkali metal carboxylate or sulphonate groups equivalent to an acid value greater than 1.0 mg KOH per 1 g of polymeric spacing particles. In a preferred embodiment the said spacing particles have a volume average diameter (d.sub.v50) that is 5 to 30 times larger than the thickness of the outermost layer.

REFERENCES:
patent: 4614708 (1986-09-01), Timmerman et al.
patent: 4777113 (1988-10-01), Inoue et al.
patent: 4861818 (1989-08-01), Timmerman et al.
patent: 5286597 (1994-02-01), Suzuki et al.
patent: 5370982 (1994-12-01), Tashiro et al.

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