Abstract: Novel pyrazolone photographic couplers contain in the coupling position a coupling-off group represented by the formula: ##STR1## wherein: L.sub.1 and L.sub.2 individually are unsubstituted or substituted methylene or ethylene;m and n individually are 0 or 1;Y is R.sub.1 or ZR.sub.2 ;R.sub.1 is an unsubstituted or substituted aryl or heterocyclic group, or is a secondary or tertiary carbon group represented by ##STR2## wherein R.sub.3 and R.sub.4 are selected from the group consisting of halogen, R.sub.2 and Z.sub.1 R.sub.b ; wherein Z is O, S, or NR.sub.a ; Z.sub.1 is O, S, or NR.sub.c ; and R.sub.2 is an unsubstituted or substituted alkyl, aryl, or heterocyclic group. R.sub.5, R.sub.6, R.sub.a, R.sub.b and R.sub.c are as defined in the specification. R.sub.3 optionally joins together with at least one of R.sub.4 and R.sub.

Abstract: A developer composition having a pH in the range of from about 6.5 to about 7.5 comprising in admixture:(a) from about 0.1% to about 20% by weight of the developer of one or more compounds selected from the group consisting of sodium octyl sulfate, sodium tetradecyl sulfate, sodium 2-ethyl hexyl sulfate and ammonium lauryl sulfate; and(b) from about 0.1% to about 30% by weight of the developer of one or more components selected from the group consisting of lithium salts of hydroxy, aryl and alkyl carboxylic acids; and(c) from about 0.1% to about 30% by weight of the developer of one or more compounds selected from the group consisting of potassium salts of hydroxy, aryl and alkyl carboxylic acids; and(d) from about 0.5% to about 3.

Abstract: A new optical recording medium is herein disclosed, the recording medium comprising a substrate and an optical recording layer formed thereon comprising a dye represented by the following general formula (I): ##STR1## (wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5 and R.sub.6 respectively represent a hydrogen atom, a halogen atom or a monovalent organic group; A denotes a bivalent organic group which is bonded to the ring through a double bond; and X.crclbar. represents an anionic group and is present in a number required to neutralize existing cationic charges, provided that X.crclbar. may form an intramolecular salt together with either of R.sub.1 to R.sub.6 and A or that at least one of the following combinations, R.sub.2 and R.sub.3 ; R.sub.3 and R.sub.4 ; R.sub.4 and R.sub.5 ; R.sub.5 and R.sub.6 may form a substituted or unsubstituted aromatic carbocyclic ring or aromatic heterocyclic ring); and optionally a quencher.

Abstract: A coating composition for application to a metal part, which improves corrosion resistance and significantly reduces the co-efficient of friction of the surface of the part and a one coating step method for applying the coating to form two distinct layers on the coated part. The composition includes an oil phase in which polytetrafluoroethelene particles are suspended mixed with a resin film forming paint composition. Upon applying the coating to the part and curing of the resin film, the oil phase separates and forms a overlayer of oil having the polytetrafluoroethelene particles uniformly distributed in the oil layer.

Abstract: Photographic elements adapted for high intensity exposures of short dwell time, e.g. laser scanning which comprise a chemically working silver halide emulsion in which the silver halide grains were formed in the presence of one or more complex compounds of rhodium (III) having 3, 4, 5 or 6 cyanide ligands attached to each rhodium ion.

Abstract: Photographic color images with improved sensitometric properties and in particular with high maximum magenta density can be obtained by use of a color photographic recording material containing a pyrazoloazole type magenta coupler of formula I ##STR1## in which PAZ represents the group of a color coupler of the pyrazoloazole series capable of color coupling;L represents a bond containing at least 4 carbon atoms;B represents alkyl, aryl or a heterocyclic group;R.sup.1 represents H, halogen, alkyl, alkoxy;R.sup.2 represents H, alkyl, cycloalkyl;L and B together containing at least 12 carbon atoms.

Abstract: Heteroaromatic vinylsulphone compounds having at least two vinylsulphonyl groups each attached to a carbon atom of a heteroasomatic ring are suitable for hardening proteinic binder layers such as photographic layers containing gelatine as binder.

Abstract: A new photographic coupler comprises a coupling-off group bonded to the coupler at the coupling position represented by the formula:--L--NR.sup.1 --DYEwherein L is a linking group; NR.sup.1 is a substituted nitrogen atom bonded to DYE that together with NR.sup.1 is a releasable dye comprising an electrically neutral chromophore. Such a coupler enables dye hue stabilization without mordanting the dye formed. Such a new coupler is useful in a photographic silver halide element and process to provide increased dye density, higher contrast dye images, and lower pH sensitivity upon processing.

Abstract: High interimage effects and edge effects can be obtained in multilayer color photographic recording materials if yellow DIR couplers of formula I are used therein, particularly if used in green sensitized or red sensitized layers. Sharpness and color reproduction are substantially improved. ##STR1## wherein R.sup.1 denotes a straight chained or branched alkyl group with up to 18 carbon atoms;R.sup.2, R.sup.3 denote identical or different alkyl groups with up to 18 carbon atoms;R.sup.4 denotes H, halogen, alkyl with up to 6 carbon atoms or alkoxy with up to 6 carbon atoms;R.sup.5 denotes H or alkyl with up to 9 carbon atoms; andR.sup.6 denotes a saturated or unsaturated aliphatic group with up to 10 carbon atoms,the total number of carbon atoms in R.sup.5 and R.sup.6 being not less than 5 and not greater than 10.

Abstract: A silver halide photographic material containing at least one of couplers represented by the general formula [I] and at least one of the compounds represented by the general formula [XII] is disclosed. ##STR1## wherein Z is a group of nonmetal atoms necessary to complete a nitrogen-containing heterocyclic ring where the ring formed by Z may be substituted; X is a hydrogen atom or a substituent capable of being released upon reaction with the oxidation product of a color developing agent and R is a hydrogen atom or substituent; ##STR2## wherein R.sub.21 is a hydrogen atom or a group selected from the group consisting of an alkyl group, an alkenyl group, a cycloalkyl group and aryl group, R.sub.22 and R.sub.23 are independently selected from the group consisting of an alkyl group, an alkenyl group, a cycloalkyl group and an aryl group.The photographic material provides a dye-image highly stable against heat and light, and a formation of stain at a non-image area is prevented.

Abstract: A heat-developable photosensitive material comprising (1) a silver halide emulsion, (2) a reducing agent, and (3) a binder on a support can be quickly heat developed to produce images having a high density and less fog by using the silver halide emulsion comprising an emulsion of silver halide grains having a distinct double-layered structure, that is, core/shell structure in the grain interior and an average grain size of at least 0.3 .mu.m in combination with (4) a specific compound of formula (I) or (II).

Abstract: Polymethine dyes and ultraviolet absorbers are disclosed containing a basic electron donating terminal nucleus and an acidic electron accepting terminal nucleus satisfying the formula: ##STR1## where Ar is independently in each occurrence an aromatic group andD is an oxy or amino group.These polymethines are useful in imaging materials.

Abstract: A silver halide photographic material containing a support and, provided thereon, at least one silver halide emulsion layer, this silver halide emulsion layer containing silver halide grains containing 90 mol % or more of silver chloride, a dye-forming coupler, and a compound represented by general formula [S]; ##STR1## wherein Q is a group of atoms necessary to complete a 5- or 6-membered heterocyclic ring or a 5- or 6-membered ring fused with a benzene ring and M is a hydrogen atom, an alkali metal or an ammonium group;the silver halide layer having been hardened by a hardener represented by formula [HDA] or [HDB]; ##STR2## wherein Rd.sub.

Abstract: Polymethine dyes and ultraviolet absorbers are disclosed containing a basic electron donating terminal nucleus and an acidic electron accepting terminal nucleus comprised of a triarylborylisocyano group. The dyes are useful in imaging materials.

Abstract: Remarkably high interimage and Eberhard effects are obtained when yellow DIR couplers corresponding to formuls I are added to multilayered color photographic recording materials, in particular to the green-sensitive or red-sensitive layers. These couplers can improve the sharpness and color reproduction. ##STR1## R.sup.1 denoted alkyl or aryl, R.sup.2 denotes alkyl with up to 18 carbon atoms,R.sup.3 denotes halogen, SO.sub.2 --R.sup.6, SO.sub.2 --NR.sup.7 --R.sup.8 or NH--SO.sub.2 --R.sup.6,R.sup.4 denoted H, alkyl or aryl.R.sup.5 denotes alkyl, cycloalkyl, alkinyl, aralkyl or aryl,R.sup.6 denotes alkyl or aryl,R.sup.7 denotes H or alkyl andR.sup.8 denoted H, alkyl, aryl, CO--R.sup.6 or ##STR2## and the total number of carbon atoms in R.sup.4 and R.sup.5 is not greater than 11.

Abstract: A silver halide color photographic material is provided, containing a pyrazoloazole type magenta coupler of the general formula (I): ##STR1## wherein R.sup.1 represents a hydrogen atom or a substituent; X represents a hydrogen atom or a group which is removable by a coupling reaction with an oxidation product of an aromatic primary amine developing agent; Za, Zb and Zc each represents a methine group, a substituted methine group, .dbd.N-- or --NH--; one of Za--Zb bond and Zb--Zc bond is a double bond and the other is a single bond; one of Za--Zb and Zb--Zc may optionally be condensed with a 5- to 7-membered ring when Za and Zb or Zb and Zc are both carbon atoms; R.sup.

Abstract: Naphtholactamsquaric acid dyes of the formula ##STR1## where R.sup.1 and R.sup.2 independently of one another are each unsubstituted or substituted C.sub.3 -C.sub.22 -alkyl, in which the alkyl chain may be interrupted by oxygen atoms, or are each unsubstituted or substituted C.sub.1 -C.sub.4 -aralkyl, unsubstituted or substituted C.sub.5 -C.sub.7 -cycloalkyl or unsubsituted or substituted phenyl, and the rings A, B, C and D are unsubstituted or substituted and/or benzofused, and optical recording materials consisting of a base and a layer which is sensitive to laser light and is composed of a thermoplastic or crosslinked polymer and one or more dyes (I).Because of the high light absorption of (I), the recording materials are very sensitive to light from the GaAlAs semiconductor laser. An excellent signal-to-noise ratio is obtained on reading the recordings.

Abstract: A photographic light-sensitive material containing a novel gelatin hardener is disclosed, which comprises as a gelatin hardener at least one compound represented by formula (I) ##STR1## wherein R.sup.1 and R.sup.2 each represents a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted aralkyl group, or R.sup.1 and R.sup.2 together represent a nitrogen-containing heterocyclic ring; R.sup.3 represents a hydrogen atom, a halogen atom, an alkyl group, an aryl group, an aralkyl group, or an alkoxy group; and R.sup.4 represents a chemical bond, or an alkylene group, an arylene group, or a divalent group composed of these groups. The compound represented by formula (I) provides rapid hardening progress, prevents after-hardening, and does not undergo hardening inhibition when applied to silver halide color photographic materials.

Abstract: A process for producing a continuous tone color image comprising providing a light sensitive photographic element comprising a substrate bearing three imaging media coated thereon, said imaging media comprising:(1) an imaging medium capable of forming a yellow image upon imagewise exposure and processing,(2) an imaging medium capable of forming a magenta image upon imagewise exposure and processing,(3) an imaging medium capable of forming a cyan image upon imagewise exposure and processing,each imaging medium having a maximum spectral sensitivity at a wavelength different from that of the maximum spectral sensitivity of the other imaging media within the range 550 to 900 nm, the sensitivities at the wavelength of maximum spectral sensitivity of the media decreasing in order from the medium of shortest wavelength maximum spectral sensitivity to the medium of longest wavelength maximum spectral sensitivity, the difference in said sensitivities between the media of shortest and longest wavelength maximum spectra

Abstract: A silver halide color photographic material comprising a support having thereon at least a silver halide emulsion layer containing a compound represented by formula (I) ##STR1## wherein R.sup.1 and R.sup.2 each represents a hydrogen atom, an alkyl group, an alkoxy group, a halogen atom, an alkoxycarbonyl group, a carbamoyl group, a carbonamido group, a sulfonamido group, or a sulfamoyl group; R.sup.3 represents a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group, or a carbonamido group; X represents a halogen atom or an alkoxy group; R.sup.4 represents a carbamoyl group, an alkylsulfonyl group, an arylsulfonyl group, or a sulfamoyl group; R.sup.5 represents a hydrogen atom, a halogen atom, a halogen-substituted alkyl group, a nitro group, a cyano group, a carbamoyl group, a sulfamoyl group, an alkylsulfonyl group, an acyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, an alkoxy group, an aryloxy group, a carbonamido group, or a sulfonamido group; provided that at least one of said R.