Abstract: The present invention presents a method of processing ferrous powder materials to produce high strength small component parts suitable for use in miniaturized electrical and electronic equipment. The processing steps involve, in part, mixing with a binder, dewaxing or presintering at a temperature higher than in the conventional dewaxing process, and final sintering at a temperature lower than the conventional sintering process to produce parts having density values of over 96% theoretical density and high mechanical strength properties in a shorter sintering time than the conventional processing method.

Abstract: A copper-tin type sintered alloy for an oil-impregnated bearing excellent in bearing performance particularly as a bearing used in low-load and high-velocity region, having a chemical composition consisting essentially of, in weight percentage:______________________________________ Tin from 8 to 11% Phosphorus from 0.2 to 1.7% ______________________________________at least one solid lubricant, having an average particle size of from 20 to 80 .mu.m, selected from the group consisting of: ______________________________________ Molybdenum disulfide from 1.1 to 11%, and Tungsten disulfide from 1.7 to 17%, ______________________________________Where,the total amount of molybdenum disulfide and tungsten disulfide being up to 17%;and,the balance copper and incidental impurities;said sintered alloy being prepared by sintering a green compact having said chemical composition at a temperature of from 650.degree. to 750.degree. C.

Abstract: A photographic silver halide light-sensitive emulsion containing a cyan color forming colorless coupler having at the coupling position at which the coupler reacts with the oxidation product of an aromatic primary amine developing agent at least one alkoxy group having a sulfonyl group as a substituent and represented by the following general formula (I):--O--R--SO.sub.2 --R.sub.1 (I)wherein R represents a saturated or unsaturated divalent aliphatic group having 1 to 4 carbon atoms which may be straight or branched chain and may be substituted (except those having an aryl group as a substituent on the carbon atom adjacent the oxygen atom bonded to the coupling position); and R.sub.1 represents an aliphatic group, an aromatic group or a heterocyclic group; and wherein R and R.sub.1 can combine directly or through a bonding group to form a ring and an image-forming process.

Abstract: An aromatic sulfonamide sulfonyl chloride, useful as an intermediate in the preparation of cyan dye-releasing redox compounds for diffusion transfer photographic materials, represented by the following general formula (I) ##STR1## wherein A represents a divalent benzene nucleus or a divalent naphthalene nucleus, in which in each nucleus the bonding thereto is symmetrical, and a method for the synthesis thereof comprising reacting an aromatic disulfonyl chloride represented by the formula (IIa) or (IIb) ##STR2## wherein the two sulfonyl chloride groups are substituted at symmetrical positions on the benzene and the naphthylene ring, with 5-amino-1-naphthol.

Abstract: A photographic polyester film support dyed with a dye having a main absorption peak in the wavelength range of about 350 to about 570 nm, a dye having a main absorption peak in the wavelength range of about 640 to about 680 nm, and a dye having a main absorption peak in the wavelength range of about 420 to about 460 nm which is represented by the following formula (I) or (II): ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4, which may be the same or different, each represents --H, --OH, --NH.sub.2, --NHR.sub.5, --NR.sub.5 R.sub.6, --Cl, --Br, an alkyl group having 4 or less carbon atoms or an alkoxy group having 4 or less carbon atoms; R.sub.5 and R.sub.6, which may be the same or different, each represents an alkyl group having 4 or less carbon atoms or an aryl group; X.sub.1 and X.sub.2, which may be the same or different, each represents --H, --Cl, --Br or an alkyl group having 4 or less carbon atoms; and Y represents --H, --Cl or --Br, with the proviso that R.sub.1, R.sub.2, R.sub.3 and R.sub.

Abstract: An aromatic sulfonamide sulfonyl chloride, useful as an intermediate in the preparation of cyan dye-releasing redox compounds for diffusion transfer photographic materials, represented by the following general formula (I) ##STR1## wherein A represents a divalent benzene nucleus or a divalent naphthalene nucleus, in which in each nucleus the bonding thereto is symmetrical, and a method for the synthesis thereof comprising reacting an aromatic disulfonyl chloride represented by the formula (IIa) or (IIb) ##STR2## wherein the two sulfonyl chloride groups are substituted at symmetrical positions on the benzene and the naphthylene ring, with 5-amino-1-naphthol.

Abstract: A styryl and butadienyl dye suitable as a filter dye or antihalation dye for photography having the formula ##STR1## wherein R represents a lower alkyl group, an unsubstituted or substituted sulfo lower alkyl group, an unsubstituted or substituted sulfo lower alkenyl group, or a carboxy lower alkyl group; A represents an atom necessary for forming a 5-membered or 6-membered heterocyclic ring; Z represents a hydrogen atom, a methyl group, or a phenyl group; B represents a hydrogen atom, a lower alkyl group, a hydroxyl group, an alkoxy group, a halogen atom, a nitro group, a carboxyl group, an unsubstituted or substituted acylamino group, an alkoxycarbonylamino group, an alkylsulfonylamino group, or an alkylthio group; R.sub.1 represents --OR.sub.2 or ##STR2## R.sub.2 represents an unsubstituted or substituted sulfo lower alkyl group; R.sub.3 and R.sub.

Abstract: A photographic light-sensitive material comprising at least one hydrophilic colloid layer containing at least one dye represented by the following formula (I): ##SPC1##wherein R.sup.1 represents an alkyl group, a carboxy group, an alkoxycarbonyl group, a carbamoyl group, an alkylcarbamoyl group, a sulfamoyl group, an alkylsulfamoyl group, an acyl group, a hydroxy group, an alkoxy group, an alkylthio group, an amino group, a ureido group, an alkylureido group, a thioureido group or an alkylthioureido group; Q represents a sulfoalkyl group, a sulfoalkoxyalkyl group or a sulfoalkylthioalkyl group; L represents a methine group; n is 0 or 1; R.sup.2 represents --OR.sup.5 or ##EQU1## wherein R.sup.5, R.sup.6 and R.sup.7 each represents a hydrogen atom or an alkyl group; R.sup.3 represents a hydroxy group, an alkoxy group or an alkyl group; and R.sup.4 represents a hydrogen atom, an alkyl group, an alkoxy group, a sulfoalkoxy group, an alkylamino group or a dialkylamino group.

Abstract: A silver halide photographic light-sensitive member comprising a support having on one side of the support at least one silver halide photographic emulsion layer and on the other side of the support at least one layer containing at least one dye represented by the general formula (I): ##SPC1##wherein Z is a group of atoms required for forming an indolenine nucleus or benzindolenine nucleus; R.sup.1 is a lower alkyl group or a lower alkenyl group; R.sup.2 is an --OXSO.sub.3 .sup.- group or an ##EQU1## group wherein X is an alkylene group or an alkenylene group, and Y is a hydrogen atom, an alkyl group, an alkenyl group, an aryl group, an acyl group, or an --OXSO.sub.3 .sup.- group; R.sup.3 is a hydrogen atom, a halogen atom, an alkyl group, an alkenyl group, a hydroxy group, an alkoxy group, an alkylthio group, a carboxy group, an alkoxycarbonyl group, an alkoxycarbonylamino group, or an acylamino group; and p is an integer of 1 or 2.