Abstract: A process for the preparation of a silver halide photographic material is disclosed which provides for the formation of a photographic layer by the use of a coating solution containing a compound represented by formula I or II.C.sub.3n F.sub.(6n)-1 --Y--A--B (I)C.sub.3n F.sub.(6n)-1 --Y--A--X--A--Y--C.sub.3n F.sub.(6n)-1 (II)wherein A represents a simple bond or a divalent group; Y represents oxygen or sulfur, or ##STR1## B represents a monovalent hydrophilic group; X represents a divalent hydrophilic group; n represents an integer of 1 to 4; R.sub.1 represents hydrogen, a lower alkyl group; and A' represents a simple bond or an alkylene group.

Abstract: A silver halide photographic material for use in flash exposure of less than 1/10000 second comprising 10.sup.-8 to 5.times.10.sup.-7 moles/moles of silver halide of at least one compound belonging to Group VIII of the Periodic Table and at least one of the sensitizing dyes of the following formulas (I) or (II) and which is capable of sensitizing silver halide at less than 550 nm: ##STR1## wherein R, R.sub.1, R.sub.2, R.sub.3, Q, X.sup.(-), Z, Z.sub.1, Z.sub.2, n, n.sub.1, n.sub.2 and n.sub.3 are as defined in the specification.

Abstract: The present invention relates to a silver halide photographic emulsion and particularly to a silver halide photographic emulsion spectrally sensitized for argon laser beam exposure having an improved high spectral sensitivity to flash exposure using flash rays having main emission peaks at wave lengths of 514.5 nm, 488.0 nm and 476.5 nm (argon laser rays).

Abstract: A silver halide photographic material for use in flash exposure of less than 1/10000 second comprising 10.sup.-8 to 5.times. 10.sup.-7 moles/moles of silver halide of at least one compound belonging to Group VIII of the Periodic Table and at least one of the sensitizing dyes of the following formulas (I) or (II) and which is capable of sensitizing silver halide at less than 55 nm:General Formula I ##STR1## General Formula II ##STR2## WHEREIN R, R.sub.1, R.sub.2, R.sub.3, Q, X.sup.(-), Z, Z.sub.1, Z.sub.2, n, n.sub.1, n.sub.2 and n.sub.3 are as defined in the specification.

Abstract: Process for developing light-sensitive silver halide photographic materials with a developing solution in the presence of one or more of sulfur-containing amine compounds.

Abstract: Gelatin, especially in a layer of a light-sensitive silver halide photographic material, is hardened with the reaction product of a compound having at least three vinylsulfonyl groups in the molecule and a compound having at least one water-soluble group and at least one group capable of reacting with the vinylsulfonyl group, such as --SH, .dbd.NH and --NH.sub.2.

Abstract: A lith-type silver halide photographic light-sensitive material for forming halftone dot images is disclosed which contains a sensitizing dye represented by the following general formula: ##STR1## WHEREIN Z.sub.1 is an atomic group necessary for forming a naphthothiazole ring, Z.sub.2 is an atomic group necessary for forming a member selected from a group consisting of substituted or unsubstituted, benzothiazole, benzoselenazole, naphthothiazole and naphthoselenazole nucleus, R.sub.1 and R.sub.2 are respectively a substituted or unsubstituted alkyl group, X.sup..theta. is an anion, and n is a positive integer of 1 or 2 with the proviso that when the dye is an inner salt, n is 1.

Abstract: 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.

Abstract: A photographic element comprising a support and a gelatin-containing layer coated thereon which contains gelatin having been hardened with a compound having in the molecular structure an aliphatic hydrocarbon chain to which at least 3 vinyl sulfonyl groups are bonded.

Abstract: This invention relates to a method of hardening gelatin which is accomplished by combining a compound containing at least one carbo-di-imide group with a compound having at least two vinyl sulfonyl groups. This combination has application to the photographic industry by providing a method of hardening the type of gelatin which is used in a gelatin -- containing photographic layer of a light-sensitive halide photographic material.

Abstract: A process for improving the coating of photographic materials by substantially removing coating irregularities and applying more uniform coatings is described.

Abstract: A process for hardening gelatin which comprises reacting photographic gelatin with a compound of the general formula[A-B-(NHCO).sub.m.sub.-1 X-Y].sub.n Zwherein A is CH.sub.2 =CH--, CH.sub.2 =C(R.sub.1)--, CH.sub.2 (R.sub.1)--CH.sub.2 -- or CH.sub.2 (R.sub.1)--CH(R.sub.2)-- (where R.sub.1 and R.sub.2 are halogens); B is --CO-- or --SO.sub.2 --; X is oxygen, sulfur or --NH--; Y is --CO--, --SO.sub.2 -- or a simple bond, and when Y is --CO-- or SO.sub.2 --, X is --NH--; m is 1 or 2; n is an integer of 2 or more; and Z is a simple bond, an n-valent aliphatic, alicyclic, aromatic or heterocyclic group, or an n-valent group comprising the combination of said groups, --CO--, ##STR1## in which R.sub.3 and R.sub.

Abstract: A compound having a 2- imidazoline nucleus is used a development accelerator.

Abstract: 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.

Abstract: An improved lith-type silver halide photosensitive material of a wide latitude for infectious developing is disclosed which comprises, in an amount of 5 mg to 5 g per mole of silver halide, a compound represented by the following general formula: ##STR1## wherein R.sub.1 is a substituted or unsubstituted alkyl, aryl, aralkyl, arythio or aryloxy group, and R.sub.2 is hydrogen, halogen, alkyl, alkoxy or nitro.

Abstract: A process for hardening gelatin which comprises reacting photographic gelatin with a compound of the general formula ##SPC1##Wherein R.sub.1 and R.sub.2 individually are halogen, an aryloxy group which may have substituents, or an arylthio group which may have substituents; X is a simple bond, an alkylene group which may have substituents --CO, --CO--R.sub.5 --CO-- (in which R.sub.5 is an alkylene group which may have substituents) or --R.sub.6 --(O--R.sub.6).sub.n -- (in which R.sub.6 is an alkylene group which may have substituents and n is a positive integer); an Y is a saturated or unsaturated hydrocarbon group which may have substituents, or a group ##SPC2##(in which R.sub.3 and R.sub.4 individually are halogen).