Abstract: To provide a card reader adaptable to a variety of cards and excelling in card carrying ease. The card reader includes: a card passage; a carrying unit for moving a card within the passage, a data recording/reproducing unit for at least either recording data onto or reproducing data out of the card present in the passage, an image forming unit for forming a visible image on the card, and an image erasing unit for erasing any visible image formed on the card, and has a configuration of handling cards differing in thickness.

Abstract: To provide a card reader adaptable to a variety of cards and excelling in card carrying ease. The card reader includes: a card passage; a carrying unit for moving a card within the passage, a data recording/reproducing unit for at least either recording data onto or reproducing data out of the card present in the passage, an image forming unit for forming a visible image on the card, and an image erasing unit for erasing any visible image formed on the card, and has a configuration of handling cards differing in thickness.

Abstract: A magnetic head slider (1) has a first rail (20) with a first air bearing surface, a second rail (25) with a second air bearing surface and further a third rail (15) with a third air bearing surface. The third rail is formed between the first rail (20) and the second rail (25). On both sides of the third air bearing surface (16), a first air pressurization part (17) and a second air pressurization part (18) are formed sunk by respective depths. When the skew angle ".theta." occurs, appropriate pressurized air flows are generated by the first air pressurization part (17) and the second air pressurization part (18) to compensate for the lifting force.

Abstract: A method of developing a silver halide photographic material is disclosed. The method comprises a step of supplying a developer to a surface of an exposed silver halide photographic material, which is transferred by at least one pair of rollers, intermittently at least twice wherein an interval time of each supplying is not more than 10 seconds and the amount of developer retained in the light-sensitive material ranges from 50 to 250 ml/m.sup.2 . The method provides a compact developing system, which is free from uneven development with good grainess of the image.

Abstract: An X-ray radiography system comprising divided fan beam scanning device, feed-back the beam regulator and a silver halide photosensitive material having a covering power not less than 45 which is capable to diagnose wide range of photodensity area at one time exposure for minimizing the radiation dose is disclosed.

Abstract: The invention provides an apparatus for processing a sheet-shaped silver halide photographic light sensitive material having a hydrophilic colloidal layer on a substrate without dipping it in a processing solution in a tank. In the apparatus, there are provided a conveying device having a pair of conveying belts disposed to face each other with a gap, wherein the gap is made so that the pair of conveying belts hold the developing solution therebetween. Accordingly, the conveying device conveys the sheet-shaped material with the developing solution between the pair of conveying belts.

Abstract: Disclosed is a light-sensitive silver halide photographic material comprising at least one silver halide emulsion layer on at least one side of a support and at least auxiliary layer adjacent to the silver halide emulsion layer, the silver halide emulsion layer containing a surface latent type silver halide emulsion and a silver halide emulsion having fog internally of the grains, and the auxiliary layer containing a compound represented by the formula (I) shown below:RfSO.sub.3 M Formula (I)wherein Rf is a substituted or unsubstituted alkyl group or a substituted or unsubstituted aralkyl group, containing at least 3 fluorine atoms, and M represents hydrogen atom, an alkali metal or ammonium group.According to the present invention, a light-sensitive silver halide photographic material improved in antistatic performance and also improved in storability without accomplaniment of lowering in sensitivity, which can give images with sensitivity, high contrast as well as high covering power is provided.

Abstract: There is disclosed a light-sensitive silver halide photographic material having at least one silver halide emulsion layer on a support, which comprises the light-sensitive photographic material contains light-sensitive silver halide grains, metal salt grains having internal fog and a polyhydric alcohol having at least two hydroxyl groups having a melting point of 40.degree. C. or higher.

Abstract: A tubular belt conveyor has an endless belt having a substantially flat cross-section with constant thickness over the breadth thereof. The belt is deformed over its breadth in a curved fashion such that the longitudinal side edges of one surface are brought into abutment with each other thus forming a tube, with the adjacent edges constituting a longitudinal lug projecting radially outwardly from the tube portion. The lug is clamped and held on both sides by a pair of guide rollers and pressed at its radially outer end surface by a pressing roller. The tubular form of the belt is maintained by a plurality of tube-forming rollers surrounding the tube portion of the belt. The flat belt is easy to produce and can be coiled in a compact manner for easy packaging. Local wear of the belt due to contact with the axial end edges of the pulley is avoided because the pulley at each end of the conveyor may have an axial length greater than the breadth of the belt, because of the flat cross-section of the belt.

Abstract: Silver halide photographic material for radiography comprising a transparent support having a hydrophilic colloid layer coated on each side thereof said layer comprising (a) photosensitive silver halide grains, (b) silver halide grains having surfaces covered with a solubility reducing agent and which, in the absence of said solubility reducing agent, are more soluble in a material capable of dissolving silver halide than said (a), said (b) having a sensitivity to light generally less than 1/10 that of said (a), and (c) physical development nuclei, wherein the molar ratio of (a) to (b), based on the silver content of each, is between 1:0.1 to 1:0.8 on each side of said support and the total silver content of (a) and (b) is from 1 to 8 g/m.sup.2.

Abstract: A radiographic image forming process comprising imagewise exposing a negative type silver halide light-sensitive photographic material in combination with a fluorescent intensifying screen to radiation and then treating said material with a processing solution, said material comprising a support and constituent layers coated on both sides of said support, said layers containing(a) light sensitive silver halide particles,(b) metallic salt particles which are not light-sensitive and, when untreated, are more soluble in said processing solution than said silver halide particles, said metallic salt particles having been treated so that the surface thereof has been rendered less soluble than said silver halide by a dissolution retarder,(c) physical development nuclei, and(d) compounds selected from water soluble dyes having absorption maxima in an aqueous solution of from 400 to 600 nm or compounds selected from said water soluble dyes coupled to a non-diffusive mordant, andsaid processing solution containing at l

Abstract: High-contrast light-sensitive silver halide photographic material which comprises a support, a silver halide emulsion layer containing silver halide and another hydrophilic colloidal layer coated on the support, at least one of said silver halide emulsion layer and another hydrophilic colloidal layer containing a substantially non-diffusible compound having oxidizing power on a hydroquinone developing agent, and the thickness, in an aqueous solution having the composition described as in the specification kept at 23.degree. C., of said at least one layer being from 1.2-4.5 times that of said layer dried in an atmosphere at 23.degree. C. at a relative humidity of 55%.

Abstract: Photographic materials and photographic processes employing light sensitive silver halide particles, silver halide particles which are substantially non-light sensitive having been modified with a silver halide solubility reducing agent and internally fogged silver halide particles which are substantially non-light sensitive provide negative silver images of high contrast and high maximum density.

Abstract: A method for forming a negative image comprising imagewise exposing a photographic material to provide exposed areas and unexposed areas, said material comprising, on a support, (1) an emulsion layer containing a light-sensitive silver halide, (2) unsensitized silver halide metallic salt grains which are more soluble in a developer than the light sensitive silver halide, and (3) nuclei for physical development, processing said material in the presence of a reducing agent and a solvent for said grains with said developer containing a substance which renders said grains less soluble by adsorbing thereto, said developer rendering said grains in said exposed areas and not in said unexposed areas soluble in said solvent, whereby metal ions are released and deposited on said nuclei.

Abstract: Light-sensitive silver halide photographic materials to be treated with a hydroquinones-containing developing solution which material comprises a support and at least one hydrophilic colloidal layer coated thereon containing silver halide grains having an average grain size of 0.05 to 1.5.mu. and a tetrazolium compound and a method of processing thereof.

Abstract: Light-sensitive silver halide photographic materials to be treated with a hydroquinones-containing developing solution which material comprises a support and at least one hydrophilic colloidal layer coated thereon which contains silver halide grains having an average grain size of 0.05 to 1.5.mu., a tetrazolium compound and a sensitizing dye.

Abstract: In a process for providing a color image which comprises imagewise exposing a multilayered light-sensitive photographic material comprising a support and a light-sensitive silver halide emulsion layer not having a coupler incorporated therein and thereafter developing said exposed photographic material with a coupler-containing color developer, the speed and color density of the image are improved by incorporating into the light-sensitive silver halide emulsion layer or the layer contiguous therewith oil particles of a high boiling solvent such as phthalate, phosphate, amide and alcohol type solvents.

Abstract: A light-sensitive silver halide photographic material comprising a m-aminophenol type coupler of the structure particularly defined therein is disclosed, which can successfully yield an excellent image stable against oxidation.

Abstract: An exposure device for printing an image on a photographic material having a tabular-shaped light emitting means as a light source is disclosed. The exposure device has neither exposure unevenness nor can the light source be suddenly cut off in use and is suitable for printing an identification mark on medical films.

Abstract: An image forming method and its apparatus are disclosed. The method comprises exposing a light-sensitive silver halide photographic material having a support and hydrophilic colloid layers provided on both sides of the support and developing the exposed material with a developing solution without immersing it in the developing solution. The apparatus comprises (a) a pair of rollers for transporting the material in a downward direction and (b) a pair of nozzles for feeding the developing solution to both sides of the material, the nozzles being provided above the rollers.