Konishiroku Photo Industry Co., Ltd.

Masayuki Matsumoto

Takashi Sasaki

Tsuneo Wada

Teiji Habu

Noboru Fujimori

Toshio Nagatani

Hisashi Yamaguchi

Hiroki Ishii

Takayoshi Omura

Shinobu Koremotsu

A light-sensitive silver halide photographic material containing at least one compound selected from the compounds represented by the following general formula (I) and at least one compound selected from compounds represented by the following general formula (II): ##STR1## General formula (I) wherein Z represents a non-metal atomic group necessary for forming a pyrroline, thiazoline or selenazoline ring, Y.sub.1 represents oxygen, sulfur, selenium or an N-R.sub.3 group (in which R.sub.3 represents an alkyl-, alkenyl- or aryl-group), R represents hydrogen or lower alkyl, and R.sub.1 and R.sub.2 individually represent an alkyl-, alkenyl- or aryl-group; General formula (II) ##STR2## wherein P represents ##STR3## (in which R.sub.5 and R.sub.6 individually represent an alkyl-, alkenyl- or aryl-group), Y.sub.2 represents oxygen, sulfur, selenium, or an &gt;N-R.sub.7 group (in which R.sub.7 represents an alkyl-, alkenyl- or aryl-group), and R.sub.4 represents an alkyl-, alkenyl- or aryl-group.

Light-sensitive silver halide photographic materials

Gelatin, particularly gelatin films of light-sensitive silver halide photographic materials, are hardened by treating with a combination of a compound having at least two vinylcarbonyl groups in the molecule with a compound having at least two vinylsulfonyl groups in the molecule.

Method for hardening gelatin

A method for hardening gelatin is disclosed wherein the gelatin is treated with a hardener which contains a combination of two compounds. One of the compounds contains at least two meslyoxy groups in the molecule while the second compound contains at least two vinylsulfonyl groups in the molecule.

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Hino, Japan

Masayuki Matsumoto