Abstract: A photothermographic material is disclosed, comprising a support having on at least one surface thereof a light-sensitive silver halide grain, an organic salt, a reducing agent for silver ion and a binder, wherein the heat-developable light-sensitive material contains a methine dye represented by formula (I).

Abstract: A photothermographic material comprising light-sensitive silver halide grains, with the photosensitive material further comprising a heptamethine cyanine dye containing at least one arylthio or thienyl group as substituent.

Abstract: A photothermographic material has a photosensitive layer containing a binder, organic silver salt, reducing agent, and silver halide on one surface of a support. The photosensitive layer further contains a specific sulfur-containing compound and a merocyanine dye of specific structure and has an absorbance of 0.15-1.0 at an exposure wavelength. Sharpness, sensitivity, and aging stability are improved.

Abstract: A photothermographic material containing photosensitive silver halide grains, in which a cyanine dye containing at least one of an alkylthio group, an arylthio group, and a substituent group having a thioether bond is included, thereby the photographic material exhibiting low fogging, high sensitivity, and improved stability.

Abstract: A sharp phase variation of a clock is suppressed when master/slave status of a first and second communication device is changed over. The first and second communication devices respectively include clock selection circuits and clock production circuits for producing a synchronous clock from the selected clock, respectively, and supply the selected clock as the synchronous clock to the other communication device which is a mating-side device. One of the first and the second communication devices is a reference selection side and becomes a slave side, and the other device is a mating synchronous clock selection side and becomes a master side. Respective data signals from the communication devices are bit multiplexed in a multiplexing device on the basis of the synchronous clock.

Abstract: A silver halide photographic material is described, which contains at least one compound represented by the following formula (I): ##STR1## wherein Z represents an atomic group necessary for forming a 5- or 6-membered nitrogen-containing heterocyclic ring, R.sub.1 represents an alkyl group, R.sub.2 represents a hydrogen atom, an alkyl group, an aryl group or a heterocyclic group, R.sub.3 represents a nitrogen-containing 5-membered heterocyclic ring, L.sub.1 and L.sub.2 each represents a methine group and n represents 0 or an integer of 1 to 3.

Abstract: A silver halide photographic material is described, which contains the methine compound represented by the following formula (I): ##STR1## wherein Z.sup.1 represents a nonmetal atomic group necessary for completing a 5- or 6-membered heterocyclic ring which may be condensed; R.sup.1 represents an aliphatic or aromatic group which may be substituted; G.sup.1 represents a hydroxyl group, an amino group, an aliphatic or aromatic primary amino group, a hydroxyamino group, an alkoxyamino group, an acylamino group, or an aliphatic or aromatic sulfonamido group; G.sup.2 is a group substituted at the position adjacent to G and is a group represented by T.sup.2 --C(.dbd.T.sup.1)--; .dbd.T.sup.1 represents .dbd.O, .dbd.NH, .dbd.NOH, an alkoxyimino group, an aliphatic or aromatic imino group, an acylimino group, or an aliphatic or aromatic sulfonylimino group; T.sup.

Abstract: A silver halide photographic material is disclosed, comprising a support having thereon at least one silver halide photographic emulsion layer, wherein the silver halide emulsion layer has been spectral-sensitized with a spectral-sensitizer to have a sensitized peak in a wavelength range longer than 730 nm; and light absorption due to the silver halide emulsion containing the spectral sensitizer satisfies the following equation (1):Abs (peak wavelength)/Abs (peak wavelength-100 nm)>5 (1);and a method for processing the above silver halide photographic material.The material has high sensitivity only to semiconductor laser rays and has low sensitivity to any other rays.

Abstract: In the production of stainless steel it is aimed at to depress the highest temperature reaching during refining the molten steel with keeping the necessary tapping temperature so as to prolong the life of refractory materials of the refining furnace. After carrying out decarburization treatment under atmospheric pressure in a refining furnace by blowing an oxygen-containing gas into molten steel, further decarburization of the molten steel and reduction of chromium oxides is carried out under stirring by blowing a non-oxidizing gas under a reduced pressure, and then, reducing agent is charged into the furnace to reduce chromium oxides under keeping the reduced pressure.

Abstract: A photographic silver halide photosensitive material includes an infrared sensitive layer which is spectrally sensitized with a combination of at least two J-band type sensitizing dyes so as to have maximum spectral sensitivity at 700 nm or longer wavelength. The photosensitive material has high sensitivity to exposure to a semiconductor laser of 700 nm or longer wavelength. Color separation is improved in the case of color photosensitive material.

Abstract: A pre-fogged direct reversal silver halide photographic material comprises on a support at least an emulsion layer comprising a previously fogged silver halide emulsion for forming a direct positive image.

Abstract: A heat-sensitive recording material comprising on a support a heat-sensitive layer comprising color-forming component A, color-forming component B which forms a color by reacting with the color-forming component A, and a tricarbocyanine dye having at least two acidic groups, wherein the tricarbocyanine dye has an absorption maximum wavelength of 650 to 1300 nm in the heat-sensitive layer and has an absorption maximum wavelength 50 nm or more longer than that of an aqueous solution of the tricarbocyanine dye.

Abstract: Disclosed is a silver halide photographic material containing a compound of formula (1) or (2): ##STR1## where DYE represents a methine dye residue; G and G.sup.- each represent a substituent for the methine dye residue, and are represented by formulae (3) and (4), respectively; and n represents an integer of from 1 to 6.--T.sup.1 --G.sup.1 NHG.sup.2 (3)--T.sup.1 --G.sup.1 N.sup.- G.sup.2 (4)where T.sup.1 represents a divalent linking group; G.sup.1 represents a carbonyl group, a sulfinyl group, or a sulfonyl group; G.sup.2 represents --CO--T.sup.2 --, --SO--T.sup.2, --SO.sub.2 --T.sup.2, or a cyano group; and T.sup.2 represents a monovalent group. The spectral sensitivity of the material is high, and the material has few residual color after processed.

Abstract: A silver halide color photographic material which contains a silver chlorobromide emulsion having a silver chloride content of 90 mol% or more or a silver chloride emulsion in at least one light-sensitive silver halide emulsion layer, said emulsion layer containing a 5-bromo-substituted simple cyanine dye. An image forming method comprising processing said photographic material with a processing solution containing a diaminostilbene compound having four or more strongly-hydrophilic substituents.

Abstract: A heat-developable color light-sensitive material comprising a support having thereon at least three silver halide emulsion layers each sensitive to a different spectral wavelength region, one silver halide emulsion layer or a light-insensitive layer adjacent thereto containing a yellow dye-providing compound, a second silver halide emulsion layer or a light-insensitive layer adjacent thereto containing a magenta dye-providing compound and a third silver halide emulsion layer or a light-insensitive layer adjacent thereto containing a cyan dye-providing compound; at least one of said silver halide emulsion layers having a maximum spectral sensitivity at a wavelength of at least 700 nm and a spectral sensitivity at a wavelength 20 nm longer than said maximum spectral sensitivity wavelength of at most 1/10 of said maximum spectral sensitivity.

Abstract: A silver halide photographic material comprises on a support at least one silver halide emulsion layer containing a trimethine dye or a pentamethinecyanine dye each containing an alkylthio-substituted benzoazole nucleus. The photographic material is suitable for forming images using a scanning system that employes a semiconductor laser as a light source. The photographic material has a high sensitivity which does not degrade during storage, and the material does not tend to fog during storage.

Abstract: A silver halide color photographic photosensitive material which has been spectrally sensitized to light of wavelengths greater than of about 670 nm in which are highly sensitive to light of wavelength greater than about 670 nm and sufficiently insensitive to visible light having a shorter wavelength. The photosensitive materials comprises a silver halide photosensitive layer containing the yellow coupler, a silver halide photosensitive layer containing a magenta coupler, a silver halide photosensitive layer containing a cyan coupler and at least one non-photosensitive hydrophilic layer. Each of the photosensitive layers are spectrally sensitized such that they have different peak spectral sensitivities at light wavelengths greater than about 670 nm.

Abstract: Methine compounds represented by the following general formula (Ia) or (Ib); ##STR1## wherein CYA represents atoms having a cyanine chromogen structure, MER represents atoms having a merocyanine chromogen structure, L represents a divalent linkage group composed of an atom or atoms containing at least one of a carbon atom, a nitrogen atom, a sulfur atom and an oxygen atom, Het represents a group containing a 5- to 7-membered hetero ring containing at least one nitrogen atom, l.sub.1 represents 1 or 2, l.sub.2 represents 0 or 1, and l.sub.3 represents 1, 2 or 3. Methine dyes using same are also disclosed.

Abstract: The information recording medium of the invention comprises a substrate and a recording layer for recording information by a laser beam, and the recording layer contains a cyanine dye having the following formula (I): ##STR1## wherein each of A.sup.1 and A.sup.10 is an atom group for completing an aromatic ring which may have one or more substituents; L.sup.1 is a methine group which may have one or more substituents or a trivalent connecting group of conjugated 3, 5 or 7 methines which may have one or more substituents; each of R.sup.11, R.sup.12, R.sup.13 and R.sup.14 is a hydrogen atom, or an alkyl, phenyl, acyl, alkoxy or 5- or 6-membered heterocyclic group which may have one or more substituents; each of R.sup.15 and R.sup.16 is an alkyl group which may have one or more substituents and one of said substituents may have an anionic moiety; X.sub.a.sup.p-- is an anion; p is 1, 2 or 3; m is 1 or 0; and m is 0 when R.sup.15 or R.sup.16 has a substituent having an anionic moiety.

Abstract: Disclosed is an optical information recording medium comprising a substrate, a first recording layer, a second recording layer and a third recording layer, superposed in this order. Each of the first, second and third recording layers is made of an organic material, and has such a specific real part of a complex refractive index and an imaginary part thereof that the resulting recording medium shows a high reflectance.