Development processing method of silver halide black-and-white p

Details Development processing method of silver halide black-and-white p Development processing method of silver halide black-and-white p

1997-05-09

1999-01-12

Le, Hoa Van

Radiation imagery chemistry: process, composition, or product th

Silver halide colloid tanning process, composition, or product

430440, 430446, G03C 529

Patent

active

058586113

ABSTRACT:
A development processing method of a silver halide black-and-white photographic material is described, which comprises the steps of (a) exposing a silver halide photographic material comprising a support having thereon at least one light-sensitive silver halide emulsion layer, and (b) developing the exposed silver halide photographic material with a developer, wherein at least one layer of the light-sensitive silver halide emulsion layer and a hydrophilic colloid layer contains at least one hydrazine derivative represented by the following formula (I); the developer contains substantially no dihydroxybenzene compound; and the developer contains (1) a developing agent selected from ascorbic acid, erythorbic acid and derivatives thereof, (2) a developing agent represented by the following formula (II), and (3) an auxiliary developing agent exhibiting a superadditive property. ##STR1## The formulae (I) and (II) are described in the specification in detail.

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