Abstract: A light sensitive silver halide photographic material for the use of X-ray photography, wherein the effective contrast characteristics of the photographic material can be changed as required for the type image being exposed, as a function of the number and disposition of fluorescent intensifying screens. The photographic material has a support carrying first and second emulsion layers on each side thereof. The first layer has a maximum density and sensitivity higher than that of the second layer; the second layer has a density of not more than 0.2 when exposed from the side of the first layer with sufficient irradiation to give the first layer a density of 1.0; and the slope connecting two points corresponding to densities of 0.8 and 1.3 above the fog or baseline on a characteristic curve of the first layer is more than the slope of a line connecting two points of 0.3 and 0.5 above the fog or baseline on a characteristic curve of the second layer.

Abstract: A light-sensitive silver halide photographic material for x-ray exposure including a transparent support and a silver halide emulsion layer provided thereon. The photographic material exhibits a blue-light density in the unexposed portion of the developed image which does not exceed 0.09 and the red-light density is 0.02 to 0.10 and is less than the blue-light density.

Abstract: A film information detecting method for detecting information provided on a film for photography and a device for practicing the same. The film information detecting method includes the steps of irradiating a film information display portion on the film for photography with a light to which the film is not sensitive and detecting the film information. The film information detecting device for detecting information provided on a film for photography includes a light irradiation device for irradiating an information display portion with a light to which the film is not sensitive and a film information detecting device for detecting film information displayed by the film information display portion.

Abstract: A light-sensitive silver halide photographic material is disclosed. The photographic material comprises an antistatic layer comprising a water-soluble electric conductive polymer, hydrophobic polymer particles and a hardener; and a hydrophilic colloidal layer containing a polyhydric alcohol. The photographic material may further comprises an electric conductive layer at the outer than a silver halide emulsion layer from the support, and the hydrophobic polymer particle may contain a dye. The photographic material is suitable for the use of an X-ray recording film.

Abstract: A photographic material causing less curvature and feasible for rapid processing is disclosed. The photographic material comprises a light-sensitive silver halide emulsion layer on one side on a support and a backing layer on the other side, wherein T.sub.E /T.sub.B, the ratio of the total dry layer thickness T.sub.E of the side having the silver halide emulsion layer to the total dry layer thickness T.sub.B of the side having the backing layer, is not less than 0.8 and not more than 1.5, and the amount of water absorbtion of the side of having the silver halide emulsion layer is not more than 8.5 g/m.sup.2.

Abstract: A method for processing a silver halide light-sensitive photographic material by a super rapid process and an automatic processing machine used therefor is disclosed. The method comprises a step of processing an imagewise exposed silver halide light-sensitive photogrpahic material comprising a support and a photographic component layer provided on at least one side of said support, under conditions satisfying the equation given below:50.ltoreq.1.sup.0.75 .times.T.ltoreq.124wherein l is the length of a path along which said silver halide light-sensitive photographic material to be conveyed for processing, the length being more than 0.7 m and less than 3.1 m, T is time, expressed in terms of seconds, necessary for said silver halide light-sensitive photographic material to pass through said path.

Abstract: A method of processing a silver halide photographic material with a compact and high speed automatic processor is disclosed. The developing solution contains hydroquinone, 1-phenyl-4-methyl-3-pyrazolidone, and 1-phenyl-4,4-dimethyl-3-pyrazolidone or 1-phenyl-4-methyl-4-hydroxy-methyl-3-pyrazolidone. The method is suitable for an X-ray photographic material.

Abstract: A sheet of silver halide photographic light-sensitive material is disclosed, which is suitable for an ultra-rapid processing and improved on decreased fog due to corner cutting the sheet. The sheet of photographic material is comprised of a light-sensitive layer, provided on a support, containing a silver halide grain composed of at least two phases and the silver iodide content of outermost phase is at least 1 mol % lower than that of inside phase contiguous to said outermost phase, and 10% to 100% of surface area of said silver halide grain is occupied with (111) face, and the total gelatin amount of component layers on the same side of the support including said light-sensitive layer is within the range of from 2.0 g/m.sup.2 to 3.5 g/m.sup.2.

Abstract: A silver halide photographic light-sensitive material comprising a specific silver halide grain is disclosed. The siliver halide grain contains a localized portion containing 20 mol % or more of silver iodide and average content of silver iodide of which grain is from 0.1 to 10.0 mol %, provided that the silver halide grain is prepared by mixing an aqueous solution containing a water soluble halide compound and an aqueous solution containing a water soluble silver salt under a condition that pAg of the mixture is raised at 9.7 or more during a period after a half amount of the silver salt to be used has been added to the mixture. The photographic light-sensitive material has improved photographic characteristics and is suitable for radiographic use.

Abstract: In an X-ray apparatus which photographs a radiogram on a film in a cassette, a local film portion in a peripheral of the film has a local film contour that is distinct from other portions of the film, and a local cassette portion in a peripheral of the cassette has a local cassette contour that is distinct from other portions of the cassette. When the film is set in the cassette, the local film portion is superimposed on the local cassette portion.