Abstract: A silver halide photographic light-sensitive material comprised of a support base having thereon a silver halide emulsion layer and an antistatic layer. The antistatic layer contains a nonionic surface active agent having two polyoxyethylene chains in a molecule, the agent being represented by the formula (I): ##STR1## wherein R.sub.1 and R.sub.3 each represents a substituted or non-substituted alkyl, aryl, alkoxy, aryloxy, acyl, amido, sulfonamido, carbamoyl or sulfamoyl group, or a halogen atom, R.sub.2 and R.sub.4 each represents a hydrogen atom, a substituted or nonsubstituted alkyl, aryl, alkoxy, aryloxy, acyl, amido, sulfonamido, carbamoyl or sulfamoyl group, or a halogen atom, R.sub.5 and R.sub.6 each represents a hydrogen atom, or a substituted or nonsubstituted alkyl or aryl group, wherein the sum total of carbon atoms in R.sub.5 and R.sub.6 is 2 or more, or R.sub.5 and R.sub.

Abstract: A color photographic element for the diffusion transfer process comprising a support having thereon at least one photosensitive silver halide emulsion layer, the silver halide emulsion layer having associated therewith a dye releasing redox compound or a dye releasing coupler and the dye releasing redox compound or the dye releasing coupler releasing a diffusible metal complex having coordinated therewith a dye or a dye precursor and a cyclic or straight or branched chain multidenate ligand by reaction with the oxidation product of a developing agent.

Abstract: A camera body and an interchangeable lens removably mounted thereon are equipped with an automatic focusing arrangement. The interchangeable lens includes a signal means for generating a relation signal representing the relationship between the driving directions of a driven section and a focus adjusting section. The camera body includes a focus condition detecting circuit for generating a focusing signal indicating the direction for focusing, a driving section for driving the driven section and change-over means for reversing the relationship, between a direction indicated by the focusing signal and a driving direction of the driving section in response to the relation signal from the signal means.

Abstract: A silver halide photographic light-sensitive material comprising a support having thereon at least one silver halide emulsion layer wherein the photographic light-sensitive material contains a compound represented by the following general formula (I): ##STR1## wherein Rf represents a saturated or unsaturated hydrocarbon group having from 3 to 20 carbon atoms wherein all or a part of the hydrogen atoms are substituted with fluorine atoms; A and B each represents a divalent linking group; R.sub.1 represents a hydrogen atom or an alkyl group; R.sub.2, R.sub.3 and R.sub.4 each represents an alkyl group and at least one of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 represents an alkyl group substituted with a monovalent group, and X represents an anion.

Abstract: A photographic element is disclosed which is comprised of a support having thereon a light-sensitive silver halide emulsion which is associated with a development inhibitor precursor. The precursor is represented by the general formula [I] ##STR1## the substituents within the general formula are defined within the specification. By utilizing the development inhibitor precursor of the invention the resulting photographic element provides images having high quality and excellent processing temperature characteristics.

Abstract: A silver halide photographic light-sensitive material containing an anionic surface active agent which comprises a support having thereon at least one constituting layer containing a compound represented by the following general formula (I): ##STR1## wherein R represents a saturated or unsaturated hydrocarbon group having from 3 to 20 carbon atoms; L.sub.1 and L.sub.2 each represents a divalent connecting group; R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7, R.sub.8 and R.sub.9, which may be the same or different, each represents a hydrogen atom, a methyl group, an ethyl group or a propyl group; A represents --COO or --SO.sub.3 ; and a, b, d and e each represents 0, 1 or 2.

Abstract: A silver halide photographic sensitive material is described comprising a compound represented by formula (I) ##STR1## wherein Rf represents a saturated or unsaturated hydrocarbon group having from 3 to 20 carbon atoms wherein all or a part of the hydrogen atoms are substituted by fluorine atoms, each of L.sub.1 and L.sub.2 represents a divalent linking group, each of R.sub.1, R.sub.2, and R.sub.3 represents a hydrogen atom, a methyl group, or an ethyl group, each of R.sub.4, R.sub.5, and R.sub.6 represents an alkyl group having from 1 to 6 carbon atoms, X represents an anion, and each of a and b represents 0, 1, or 2.

Abstract: A color image forming process which comprises processing a photographic light-sensitive element comprising a support having thereon a layer containing imagewise distributed silver therein with an aqueous alkaline solution containing a stannous ion and in the presence of a dye and a bispyridinium compound represented by the following general formula: ##STR1## wherein R.sub.1 and R.sub.2 each represents a lower aliphatic hydrocarbon group or R.sub.1 and R.sub.2 are bonded each other to form a ring; n represents 0 or 1; and X.sup.- represents an anion; to bleach the dye in an imagewise manner. By the process of the present invention, color images which are stable to light, heat and moisture are formed using light-sensitive elements containing a reduced amount of silver salt and without using chemicals causing environmental pollution problems for the processing.

Abstract: A compact optical lens barrel mechanism for relativenonrotational displacement of a series of lens elements forming an optical system is provided. Lens elements can be mounted for selective subdivision into operative lens groups for both focusing and introducing a variable soft focus condition. The barrel mechanism includes a mounting cylinder having appropriate linear alignment elements. A translational cylinder is rotatively journalled within the mounting cylinder. Three lens mounting members can be relatively movable and are designed to each carry a predetermined number of lens elements. The rear lens mounting member can be moved by the translational cylinder to provide a variable amount of spherical aberration to produce a soft focus condition. An exterior focusing ring and a soft focus condition ring can be rotatively mounted relative to the stationary mounting cylinder for linearly moving the respective mounting members.

Abstract: A method of preparing an azo dye containing a quinone residue useful as an intermediate for dyes and dye developers suitable for the color diffusion transfer process comprising reacting a quinone residue-containing coupler with a diazonium compound whereby the necessity of protection steps may be avoided.

Abstract: Light sensitive high molecular weight compounds containing furanacrylate groups in the molecule, which can be suitably used for the preparation of photopolymerizable compositions used in light sensitive materials such as, e.g., a photoresist, a method for forming images using the high molecular weight compounds which undergo a change in solubility or are rendered in soluble upon irradiation and a method for preparing the high molecular weight compounds containing the novel structure by homo- or copolymerization of a monomeric vinyl ether or epoxy compound containing a furanacrylate group in the molecule.

Abstract: A color photographic material for, in particular, a color diffusion transfer process having at least one silver halide emulsion layer having associated therewith a dye releasing redox compound shown by the formula ##STR1## wherein G represents a hydroxyl group or a group yielding a hydroxyl group by hydrolysis, Col represents a dye or a group yielding a dye by hydrolysis, R represents an alkyl group or an aromatic group, X represents a substituent comprising an electron donating group or substituents, which may be same or different, at least one of which comprises an electron donating group, and n is 1, 2, or 3, where X moieties may form a condensed ring (excluding an aromatic hydrocarbon ring) with each other or with OR, wherein the total carbon number of Xn and R is more than 8.

Abstract: A high polymer compound containing therein the reactive group represented by the following general formula; ##STR1## wherein X represents O or S; Y represents a hydrogen atom or a cyano group; and R.sub.2 represents a hydrogen atom, an alkyl group having not more than 4 carbon atoms, a halogen atom or a nitro group.

Abstract: A yellow dye developer having improved photographic properties represented by the formula (I) ##STR1## wherein X represents a hydrogen atom, a halogen atom, a nitro group, a hydroxyl group, an alkyl group having 1 to 4 carbon atoms, an acylamino group having 1 to 4 carbon atoms; Z represents an atomic group necessary for completing a furan ring or a benzofuran ring; Y represents a hydroxyl group, an acyloxy group having 1 to 4 carbon atoms, or an alkoxyacyloxy group having 2 to 4 carbon atoms; Ar represents an aromatic ring; R.sub.1 represents a hydrogen atom, a halogen atom, an acyl group having 1 to 4 carbon atoms, or an alkyl group having 1 to 5 carbon atoms; R.sub.2 represents a hydroxyl group, an acyloxy group having 1 to 4 carbon atoms, or an alkoxyacyloxy group having 2 to 4 carbon atoms with the R.sub.2 group being at the ortho-position to the azo group; m and n each is an integer of 1 to 4; and at least one of X, Z, Ar and R.sub.

Abstract: An enlarger lens barrel has a cavity provided with an outwardly directed window and a longitudinal bore defining a light passageway between the cavity and the enlarger light source. A diaphragm aperture adjusting ring is rotatable on the barrel and carries a transparent indicator ring provided with aperture designating characters which are movable with the indicator ring across the window. Housed in the cavity is a transparent light guide member having a cylindrically concave radially extending face confronting the bore and a transversely ribbed inside face including longitudinally and slightly radially spaced transverse faces reflecting light incident thereon from the passageway to the window to longitudinally spread the light incident thereon which is transversely diverged by the concave face. The rings are longitudinally shiftable between increment and continuous adjustment positions.

Abstract: A dye developer represented by the following general formula (I), ##SPC1##wherein X is a hydrogen atom, a bromine atom, a nitro group, an acylamino group, a hydroxyl group or an alkyl group having not more than 4 carbon atoms; n is 1, 2 or 3; Y is an acyl group having not more than 4 carbon atoms; and Ar is a mono- or polyaryl group; and wherein an aromatic ring can be condensed in the 4-and 5-positions of the furan ring nucleus, and at least one of X, the aromatic ring condensed with the furan ring nucleus and Ar being directly connected to or being connected through an atom or an atomic grouping to a polyphenol having developing activity for silver halide.

Abstract: Light sensitive high molecular weight compounds containing furanacrylate groups in the molecule, which can be suitably used for the preparation of photopolymerizable compositions used in light sensitive materials such as, e.g., a photoresist, a method for forming images using the high molecular weight compounds which undergo a change in solubility or are rendered insoluble upon irradiation and a method for preparing the high molecular weight compounds containing the novel structure by homo- or copolymerization of a monomeric vinyl ether or epoxy compound containing a furanacrylate group in the molecule.

Abstract: A dye developer represented by the following general formula (I): ##EQU1## WHEREIN X represents the atoms necessary for completing a monocyclic or polycyclic aromatic group; Y represents an acyl group having 1 to 4 carbon atoms; Ar and Z each represents a monocyclic polycyclic aromatic group, with Ar being connected either directly or through a divalent atom or group to a polyhydric phenol moiety having a silver halide developing action; R represents an alkyl group or an alkoxy group; n represents an integer of 0 to 4; and Q represents ##EQU2## wherein Z' represents a hydrogen atom or an alkyl group, R.sub.2 and R.sub.3 each represents a hydrogen atom or an aliphatic group, or R.sub.2 and R.sub.3 can combine to form a divalent aliphatic group and a light-sensitive material comprising a support having thereon a light-sensitive silver halide emulsion layer with the dye developer of this invention associated therewith.

Abstract: A color diffusion transfer photographic light-sensitive material which comprises a support having thereon at least one light-sensitive silver halide emulsion layer containing a silver halide combined with a dye developer, one of the light-sensitive silver halide emulsion layers being combined with a dye developer represented by the following General Formula (I); ##EQU1## wherein Ar represents a divalent aromatic group; X represents ##EQU2## with R being an alkyl group having 1 to 3 carbon atoms, --NHCO-- with the nitrogen atom being connected to the Ar group or --OCO-- with the oxygen atom being connected to the Ar group; and Y represents an aromatic group having a substituent containing a hydroquinonyl group.

Abstract: A high polymer compound containing therein the reactive group represented by the following general formula; ##SPC1##Wherein X represents O or S; Y represents a hydrogen atom or a cyano group; and R.sub.2 represents a hydrogen atom, an alkyl group having not more than 4 carbon atoms, a halogen atom or a nitro group.