Abstract: A silver halide photographic light-sensitive material comprising a support having thereon at least one light-sensitive silver halide emulsion layer and a surface layer thereof containing an organic fluoro-compound and a carboxy group-containing compound, resulting in an improvement in the physical characteristics of the surface.

Abstract: Gelatin hardening agents represented by the following formulae (I) or (II):a.sub.1 --b.sub.1 --r.sub.1 --b.sub.2).sub.n A.sub.2 (I)(a.sub.1 --b.sub.1).sub.3 r.sub.2 (ii)wherein A.sub.1 and A.sub.2 each represents an azole group which is linked to B.sub.1 or B.sub.2 by a nitrogen atom, wherein the azole group is a 5-membered ring having 2 or more nitrogen atoms which has a conjugated system and which may include a condensed ring, B.sub.1 and B.sub.2 each represents ##STR1## R.sub.1 represents a divalent group, R.sub.2 represents a trivalent group, and n represents 0 or 1.

Abstract: A method of hardening gelatin which comprises treating gelatin with a compound represented by the formula (I): ##STR1## wherein X represents a hydrogen atom, an alkyl group having 6 or less carbon atoms, an aryl group having 8 or less carbon atoms, a haloalkyl group having 2 or less carbon atoms, an alkoxy group having 10 or less carbon atoms, a halogen atom, a carboxy group, a sulfo group, a salt, an alkyl ester having 4 or less carbon atoms in the alkyl moiety or an amide of said carboxy or sulfo group, an acylamino group or a nitro group, n represents 1 or 2, and R represents a monovalent or divalent organic group.

Abstract: A process for hardening, e.g., gelatin, in particular, a gelatin used for photographic light-sensitive materials, which comprises treating gelatin, a non-gelatin hydrophilic high molecular weight material containing primary or secondary amino groups or a composition containing the same with a compound represented by the following general formula (I): ##STR1## WHEREIN R.sub.1 and R.sub.2, which may be the same or different, each represents a monovalent residue which is bonded through a carbon atom or a sulfur atom thereof to the nitrogen atom forming the carboxylic acid ester, and R.sub.1 and R.sub.2 may combine to form a ring structure; R is a divalent or trivalent residue which is bonded through a carbon atom or a nitrogen atom thereof to the carbon atom of the carboxyl group in the carboxylic acid ester, and n is 2 when R is a divalent residue and n is 3 when R is a trivalent residue.

Abstract: A method of hardening gelatin which comprises adding thereto a compound of the following general formula (I): ##STR1## in which Y.sub.1 is CH.sub.2 =CH--, ClCH.sub.2 --CH.sub.2 --, BrCH.sub.2 --CH.sub.2 --, CH.sub.3 COO--CH.sub.2 CH.sub.2 -- or ClCH.sub.2 COO--CH.sub.2 CH.sub.2 --, R.sub.1 and R.sub.2 are H or CH.sub.3, but both of them are not CH.sub.3 at the same time, and A is one of the following groups: ##STR2## in which both R.sub.3 and R.sub.4 were acyl groups or at least one of them is an acyl group other than when R.sub.3 and R.sub.4 form a benzotriazole ring, and when one of R.sub.3 and R.sub.4 is an acyl group, the other is H or an alkyl group containing at most 4 carbon atoms; and wherein in any case, R.sub.3 and R.sub.4 may form a saturated or unsaturated carbocyclic or heterocyclic ring in combination with the nitrogen atom to which they are attached; R.sub.5, R.sub.6 and R.sub.

Abstract: A silver halide photographic light-sensitive material in which a surface layer thereof contains an inorganic material comprising as a main component alumina-magnesium silicate to improve upon the characteristics of the surface.