Abstract: A photographic silver halide material for industrial radiography comprises a film support and on one or both sides thereof a silver halide emulsion rich in silver chloride and a silver halide emulsion rich in silver bromide either in admixture in the same layer or in contiguous layers. The ratio by weight of colloid binder, e.g. gelatin, to silver halide (expressed as silver nitrate) is from 3:10 to 6:10 and the amount of silver halide corresponds to from 6 g to 20 g of silver nitrate per square meter and per side. The material has been forehardened to an extent such that when it is immersed in demineralised water of 25.degree. C. for 3 minutes there is absorbed less than 2.5 g of water per gram of binder. The material can be processed within a total processing time of less than 5 minutes with a developer and fixer being substantially free from hardening agents and the fixer being substantially free from ammonium ions.

Abstract: A photostimulable phosphor of which the emission intensity at the stimulation wavelength of 550 nm is higher than the emission intensity at the stimulation wavelength of 600 nm, characterized in that said phosphor is a divalent europium activated barium fluorobromide containing as codopant samarium, and wherein the terminology barium fluorobromide stands for an empirical formula wherein (1) a minor part of the barium (less than 50 atom %) is replaced optionally by at least one metal selected from the group consisting of a monovalent alkali metal, a divalent alkaline earth metal other than barium, and a trivalent metal selected from the group consisting of Al, Ga, In, Tl, Sb, Bi, Y, and a rare earth metal selected from the group consisting of Ce, Pr, Nd, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu, (2) a minor part (less than 50 atom %) of the bromine is replaced by chlorine, and/or iodine, and (3) wherein fluorine is present stoichiometrically in a larger atom % than bromine taken alone or bromine combined with chlorin

Abstract: A photographic element is disclosed comprised of a support and a sequence of superimposed blue, green and red recording silver halide emulsion layer units that produce images of the same hue upon imagewise exposure and photographic development. A first interlayer unit overlies the emulsion layer unit nearest the support and is capable of transmitting to it imagewise exposing radiation this emulsion layer unit is intended to record. A second interlayer unit underlies the emulsion layer unit farthest from the support and is capable of transmitting to the emulsion layer units lying nearer the support imagewise exposing radiation these emulsion layer units are intended to record. The imagewise exposed photographic element is photographically developed and fixed to produce a silver image in each of the emulsion layer units.

Abstract: A radiographic film package for non-destructive testing purposes has been developed, comprising a radiographic film sheet which is composed of a film support coated at both sides with one or more silver halide emulsion layer(s) and one or more non-light-sensitive protective antistress coating(s) thereover, and a wrapper around said film sheet which is light-opaque and air-tight, and which comprises a heat-sealable thermoplastic layer at the inner side of the wrapper, a transparent polymer layer at the outer side of the wrapper and a layer of aluminum located between said transparent polymer layer and said heat-sealable thermoplastic layer, and wherein at least one antistatic layer coating is provided between the said thermoplastic layer of said wrapper and the emulsion layers of said film sheet.

Abstract: A system for orthopedic imaging is disclosed which consists of a supply of low crossover sensitometrically asymmetric radiographic elements and cassettes with various front and back intensifying screens to produce optimal bone images and useful images of surrounding flesh.

Abstract: Radiographic elements and assemblies are disclosed. The radiographic element has silver halide emulsion layer units coated on opposite sides of a film support, and are constructed to minimize crossover during exposure by the intensifying screens. The minimal crossover radiographic elements record both bone and soft tissue structure because a silver halide emulsion layer unit on one side of the support is chosen to exhibit an emission and contrast exceeding that of another silver halide emulsion layer unit on the opposite side of the support. Radiographic assemblies consisting of the radiographic elements and various front and back intensifying screens produce clear and useful X-ray images of the various bones and surrounding soft tissue structures of the body.

Abstract: An optical recording medium contains a fluorescent material and a photo-reactive bistable quencher. Information is digitally recorded by utilizing the bistable isomers of the photo-reactive bistable quencher by irradiating the medium with a light in the wavelength to be absorbed by the fluorescent material, whereby energy is transferred from the fluorescent material to the photo-reactive bistable quencher. Reading is made by irradiating the medium with a weaker light and detecting the fluorescence emitted by the fluorescent material.

Abstract: A radiation sensitized paper having a polyester film, a coating layer which contains a water-soluble or water-dispersible resin and is formed on a surface of the polyester film, a resin layer which is formed on the coating layer and a fluorescent material layer which is formed on the resin layer, in which adhesion of the fluorescent material layer is good.

Abstract: An inexpensive, ballasted optical brightener for use in photographic elements is prepared by reacting an optical brightener of the formula ##STR1## where M is a cation; X is a group capable of undergoing nucleophilic displacement; and Z is ##STR2## or --O--R.sub.3, where each of R1 and R2 is a hydrogen atom, or an aromatic group which can be unsubstituted or substituted with one or more groups unreactive towards X; and R3 is an aromatic group which can be unsubstituted or substituted with one or more groups unreactive towards Xwith a water soluble polymer, such as gelatin. The resulting ballasted optical brightener is stable in aqueous photographic compositions.

Abstract: Radiographic elements are disclosed each containing a support and, coated on the support, at least two high tabularity tabular grain emulsions. The tabular grains coated on the support exhibit a face centered cubic crystal lattice structure formed by silver bromide with a selected portion of the tabular grains additionally containing iodide substantially uniformly distributed through the crystal lattice structure in an overall concentration of at least 0.5 mole percent with the iodide concentration at any one grain site being less than 5 mole percent. The proportion of the tabular grains selected to contain iodide as well as the distribution of iodide within the tabular grains results in a reduction in pressure induced variance of radiographic imaging response as a function of applied pressure, such as that inadvertently applied during film handling and processing.

Abstract: The present invention relates to a symmetrical radiographic assembly comprising:a double side radiographic element which comprises a support and hydrophilic colloid layers coated on each side of said support, andan intensifying screen adjacent to each side of said radiographic element,wherein on each side of said support are coated at least two silver halide emulsion layers having a speed difference of at least 0.5 logE and an average contrast difference of at least 0.

Abstract: The synthesis and the application of new dyes is described, said new dyes being incorporated in non-migratory state in hydrophilic colloid layers of photographic materials wherefrom they can be rapidly removed after being quickly decolourized in alkaline aqueous liquids used in the processing of said materials. The filter dyes have an ester function or a derivative therefrom as a substituent at the mono- or trimethine chain.

Abstract: A radiation film comprises a substrate and emulsion layers overlaid on opposite surfaces of the substrate. The radiation film is sandwiched between two radiation intensifying screens having different radiation energy absorption characteristics. Each of the emulsion layers has a sensitivity corresponding to the emission spectrum of its adjacent radiation intensifying screen. The emulsion layers form different colors in the radiation film after the radiation film has been developed. A removable light blocking layer is located between the substrate and each of the emulsion layers. The radiation film enables two kinds of images to be recorded with different radiation energy characteristics on a single radiation film, such that the image quality may not become bad due to cross-over light.

Abstract: A radiographic assembly comprising:a radiographic element which comprises a support and a front and back pair of silver halide emulsion layers coated on the opposite sides of the support, anda front and back pair of intensifying screens adjacent said front and back emulsion layers, respectively,wherein at least one of said silver halide emulsion layers shows a swelling index lower than 140% and a melting time of from 45 to 120 minutes, and the contrast difference between said pair of silver halide emulsion layers is at least 0.5,wherein the X-ray stimulated light emission difference between said pair of intensifying screens is at least 0.6 IogE, andwherein the average imagewise cross-over of said radiographic element is lower than 5% at optical density of from 0.5 to 1.75 and in the range of from 5 to 15% at optical density of from 1.75 to 3.25, said imagewise cross-over being measured according to the formula described in the specificaton.

Abstract: A method is disclosed of obtaining from an imagewise exposed photographic element separate records of the imagewise exposure to each of the blue, green and red portions of the spectrum comprising photographically processing an imagewise exposed photographic element comprised of a sequence of superimposed blue, green and red recording silver halide emulsion layer units that produce images of the same hue upon processing (e.g., units lacking a dye-forming coupler). A first interlayer unit overlies the emulsion layer unit nearest the support and is capable of transmitting to it imagewise exposing radiation this emulsion layer unit is intended to record. A second interlayer unit underlies the emulsion layer unit farthest from the support and is capable of transmitting to the emulsion layer units lying nearer the support imagewise exposing radiation these emulsion layer units are intended to record.

Abstract: A stable, image-retaining, optically switchable film produced from a purple membrane in a high-pH polyvinyl alcohol solution forms an optical memory for data storage. The film, when dry, can be exposed to light to convert BR molecules to their M state, which is stable, and which allows long-term image storage. The image can be erased by exposing the film to yellow light to thereby switch all the molecules to the M state, and then a reverse image can be obtained using blue light. By controlling the location and wavelength of the incident light, pixels can be selected and exposed for information storage.

Abstract: The synthesis and the application of new dyes is described, said new dyes being incorporated in non-migratory state in hydrophilic colloid layers of photographic materials wherefrom they can be rapidly removed after being quickly decolorized in alkaline aqueous liquids used in the processing of said materials. The filter dyes have an amide function or a derivative therefrom as a substituent at the mono- or trimethine chain.

Abstract: A photographic material including a hydrophilic colloid layer containing a dispersion of dye is disclosed. The dye colors a specific layer in the photographic material without diffusing to other layers during storage, yet is quickly decolored or eluted during development processing.

Abstract: A radiographic screen comprising a support, a layer comprising a fluorescent phosphor dispersed in a binder and a protective topcoat coated over the phosphor binder layer, wherein the edges are reinforced by a radiation cured coating obtained by curing a radiation curable composition comprising a polyester prepolymer, and a diluent mono-functional monomer.

Abstract: There is disclosed a method for forming an X-ray image formed with less exposure than is customary and having an excellent resolution. The X-ray image can be formed by subjecting a light-sensitive material comprising a support, having provided thereon a light-sensitive silver halide emulsion layer containing a silver halide emulsion sensitized with a sensitizing dye represented by the following Formula (I) on only one side of the support to photographing via a green color emission fluorescent screen with a soft X-ray emitted from an X-ray generating device with a tube voltage of 25.sup.kv to 40.sup.kv. In the characteristic curve represented by a rectangular coordinate constituted by optical density and logarithmic exposure, the average gradation shown by the gradient of a line drawn by connecting the point at which 0.25 is added to the minimum density (hereinafter referred to as Dmin) to the point at which 2.0 is added to Dmin is set at 2.8 to 3.

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: An asymmetrical radiographic element is disclosed comprised of a transparent film support, green sensitized silver halide emulsion layer units of differing sensitometric characteristics coated on opposite sides of the film support, and a processing solution decolorizable means for reducing crossover to less than 10 percent. The element is positioned between intensifying screens and mounted in a cassette for exposure to X-radiation. A processing solution decolorizable pentamethineoxonol dye with insignificant absorption at 550 nm is incorporated into an overcoat layer to distinguish which of the emulsion layer units is positioned nearest a source of X-radiation during exposure.

Abstract: A light-sensitive silver halide photographic material is disclosed. The light-sensitive material comprises a support and two photographic layers each being provided on both sides, side A and side B, of the support and comprising a silver halide emulsion layer and a hydrophilic colloid layer wherein the light-sensitive material satisfies the relationship between sensitivities sA, sB and sA' thereof represented by the following expressions I and II, and an organic substance remained in the photographic layers after processing is an amount of not more than 90% by weight of the organic substance contained in the photographic layers before processing of the light-sensitive material;I: sA/sA'>4.0II: sA/sB=1.

Abstract: Disclosed is a light-sensitive silver halide photographic material having at least one silver halide emulsion layer on a support, characterized in that at least one layer of the above silver halide emulsion layers contains a compound represented by the following formula (I): ##STR1## wherein n represents 0 or 1; A represents a compound residue which cleaves a bonding to Time in the case of n=1 or a compound residue which cleaves one of bondings to FL in the case of n=0; Time represents a timing group which cleaves a bonding to FL after cleavage from A; and FL represents a compound residue which emits fluorescence by cleavage of a bonding to Time in the case of n=1 and a compound residue which emits fluorescence by cleavage of one of bondings to A in the case of n=0.

Abstract: A high resolution radiography system is presented utilizing a an intensifying screen incorporating a UV emitting phosphor. The photographic element exhibits enhanced sensitivity to the emission of the phosphor and further comprises at least one compound selected from the group comprising: ##STR1## wherein R.sub.1 =substituted or unsubstituted aromatic ring; R.sub.2 =H, substituted or unsubstituted alkyl or substituted or unsubstituted aryl; R.sub.3 =an alkyl group, an aryl group, a COOR group wherein R is hydrogen, alkyl, aryl or an alkali metal cation, HNR4+ wherein R.sub.4 is alkyl, substituted alkyl or alkyaryl.

Abstract: An electron beam imaging system (10) includes a photoemitter plate (12). An optical image beam (15) is directed through a pattern mask (18), which is imaged onto the photoemitter (12). The photoemitter (12) emits electrons from those unmasked regions illuminated by the optical image beam, emitting an extended-source electron beam that carries the mask image. The extended-source electron beam is focused (34) onto a device under fabrication (40), providing a single-stage electron lithographic patterning function. The optical source (16) is chosen so that the optical image beam energy is nearly identical to the work function for the photoemissive coating (14) of the photoemitter (12). As a result, the photoemitter (12) emits electrons with substantially zero kinetic energy, allowing the emitted electrons to be accelerated through the electron beam focusing elements (34) with very nearly identical electron velocities, thereby minimizing chromatic aberrations.

Abstract: A method for recording an image of ionizing radiation comprising the steps of:(1) image-wise exposing to ionizing radiation an element containing at least one phosphor which converts said ionizing radiation into photochemically active radiation,(2) image-wise exposing a recording material to the thus obtained photochemically active radiation, said recording material containing at least one non-luminescent substance or poorly luminescent substance by means of which through said photochemically active radiation at least one compound is produced forming in said recording material or by transfer into a receptor element a latent luminescent image or by means of which through said photochemically active radiation (a) compound(s) is (are) formed that is (are) allowed to transfer from the recording material into a receptor element to form therein by chemical reaction a latent luminescent image,(3) exposing said latent image to radiation stimulating the fluorescent light emission of the formed luminescent compound(s),

Abstract: A radiation image storage panel comprises a support made of a plastic film or a paper material, a stimulable phosphor layer and optionally one or more other layers. The radiation image storage panel contains an electroconductive zinc oxide whisker in at least one layer.

Abstract: An improved X-ray intensifying screen comprising phosphor crystals having an effective amount of a light scattering particulate material, e.g., barium sulfate, strontium sulfate, calcium sulfate, titanium dioxide or magnesium oxide, adhered thereto is described. This screen will give high speed and yield an image with increased sharpness when exposed with a single-side coated medical X-ray film element, compared to one made without the particulate material.

Abstract: A method is provided for inducing fluorescence in films or coatings comprised in whole or in part of parylene which involves exposure of the parylene to an active plasma. A method is also provided which utilizes plasma induced fluorescence as a means for quality control inspection of films and coatings of parylene such as those contained on electronic components or for identification and/or authentication of various articles.

Abstract: There is disclosed a monochromatic silver halide light-sensitive photographic material for printing from a color negative, which has an excellent sensitivity, sharpness, graininess and background whiteness. The photographic material is characterized by that the surface of the support on which the emulsion layer is provided has the following reflection properties:L=90 or morea*=-0.5 to 1.0b*=-5.0 to -1.

Abstract: Disclosed is a process for preparing a radiation image storage panel having a phosphor layer containing an activated stimulable phosphor, characterized in that applying a heat treatment that can secure the content of an activator in the activated stimulable phosphor.Disclosed is also a process for preparing a radiation image storage panel having a layer of a stimulable phosphor layer activated with an activator, wherein a stimulable phosphor matrix layer is formed, and thereafter the activator is diffusion added to the layer to form a stimulable phosphor layer.

Abstract: An X-ray photographic material which exhibits reduced crossover and exhibits no objectionable after-color (stain) upon rapid processing, comprising a transparent support having at least one photosensitive silver halide emulsion layer provided on each side of said support and having at least one layer containing a dye which absorbs light in the sensitive region of said sensitive silver halide photographic emulsion layer provided between said light-sensitive emulsion layer and the support, wherein crossover is less than 10%, said dye is adsorbed onto fine particles which fine particles provide surfaces onto which the dye can be adsorbed, said dye can be decolorized or washed out during development, and said dye is a compound selected from the group consisting of compounds represented by the formulae set forth in the specification.

Abstract: Disclosed are a method for converting radiographic image which comprises the steps of:(a) storing radiation energy-corresponding to a radiographic image in a stimulable phosphor of a panel comprising a stimulable phosphor-containing layer,(b) scanning the layer with a stimulating ray to release the stored energy as a fluorescence, and(c) detecting the fluorescence to form an image, wherein the stimulable phosphor is represented by the following formula:(M.sub.1-x.M.sup.I.sub.x)X.aM.sup.II X'.sub.2.bM.sup.III X".sub.3 :dBwherein M represents either Cs or Rb; M.sup.I represents at least one of alkaline metals selected from the group consisting of Li, Na, K, Rb and Cs; M.sup.II represents at least one divalent meal selected from the group consisting of Be, Mg, Ca, Sr, Ba, Zn, Cd, Cu and Ni; M.sup.

Abstract: Combination of photosensitive elements for use in radiography consisting of a pair of radiographic fluorescent screens and a double-side coated silver halide radiographic element. Each screen is arranged adjacent to each silver halide layer and each screen is capable of imagewise emitting radiation to which the adjacent silver halide layer is sensitive when imagewise exposed to X radiation. The combination is characterized in that one fluorescent screen emits a first radiation in a first wavelength region of the electromagnetic spectrum and the other fluorescent screen emits a second radiation in a second wavelength region of the electromagnetic spectrum, and each silver halide layer is substantially insensitive to the radiation emitted by the opposite screen.

Abstract: A silver halide photographic material comprising a support having thereon at least one silver halide emulsion layer containing at least 1.0.times.10.sup.-4 gram equivalent of an anionic surface active material as anion per gram of a hydrophilic dispersion medium in the emulsion layer, the material having dispersed in the emulsion layer a light-collecting dye that has an emission band overlapping at least partially with the optical absorption band of a spectral sensitizing dye on a silver halide grain present in the emulsion layer, the light-collecting dye having an emission quantum yield of at least 0.1 at a concentration of 10.sup.-4 mol/dm.sup.3 in dry gelatin at room temperature, with the proviso that the light-collecting dye and the spectral sensitizing dye may be the same compound.

Abstract: A radiation image recording and reproducing method comprising the steps of exposing a stimulable phosphor containing a bivalent europium activated complex halide phosphor represented by the formula:BaFX.xNaX':aEu.sup.2+wherein X and X' each designated at least one of Cl, Br and I, x is a number satisfying 0<x.ltoreq.10.sup.-1, and "a" is a number satisfying 0<a.ltoreq.0.2, to a radiation passing through an object to have the radiation energy stored in said stimulable phosphor, stimulating said stimulable phosphor by an electromagnetic wave having a wavelength within the range of 450 nm to 1,100 nm, thereby causing said stimulable phosphor to emit said radiation energy in the form of light, and detecting the emitted light.

Abstract: A method for enhancing fingerprint images comprises the steps of applying a chemical compound to the fingers to be printed in which the compound contains a first constituent in the form of a conventional ink or inkless reagent. The first constituent is arranged by itself (i.e., ink) or in conjunction with a developer (i.e., inkless) to provide a visible image of a fingerprint when applied to a porous surface, such as a conventional fingerprint card under light within the visible spectrum. A second constituent is included in the compound which is arranged to fluoresce within the visible spectrum (i.e., 500 to 650 nm) when subject to U.V. radiation, preferably centered at 550 nm.The compound from the fingers is then deposited onto a porous surface and a visible image is formed therefrom representing the ridge patterns of the fingers. The surface is then illuminated with visible and ultraviolet light and the fluorescence of the second constituent enhances the brightness of the image.

Abstract: A method for recording a color image having two or more hues is disclosed which comprises exposing to light from one light source a light-sensitive sheet having carried on the surface thereof a mixture containing, as a light-sensitive agent, two or more kinds of photocurable microcapsules which encapsulate different color formers therein and are sensitive to lights of different wave length regions from each other, with changing the exposure amount in conformity with image information to thereby selectively cure the microcapsules, wherein (i) said light-sensitive agent contains at least one kinds of photcurable microcapsules which become soft when light-exposed in an exposure amount more than the exposure amount necessary for photocuring of said one kind of photocurable microcapsules, or (ii) said exposing is carried out using one light source capable of emitting lights of said different wave length regions simultaneously with controlling the exposure amount within plural levels bonded by maximum sensitivity i

Abstract: A silver halide photographic material is disclosed containing at least one silver halide emulsion layer, in which (1) the silver halide grains constituting the emulsion layer have been spectrally sensitized by at least one adsorbable spectral sensitizing dye added thereto before the completion of chemical ripening of the grains, and (2) at least one luminous dye which has a quantum efficiency of 0.1 or more when the concentration thereof in dry gelatin at room temperature is 10.sup.-4 mol/dm.sup.3 and which can be substantially completely removed by development is added to a hydrophilic dispersion medium for the emulsion layer exclusive of the silver halide grains in a concentration of 2.0 mmol/dm.sup.3 in the dispersion medium. The addition of the spectral sensitizing dye is not limitative and can be either before the completion of the formation of the silver halide grains or during a stage from the completion of the formation of the grains to the completion of the chemical ripening thereof.

Abstract: A radiographic element is disclosed which exhibits high covering power, reduced crossover without emulsion desensitization, reduced wet pressure sensitivity, and can be fully processed in a rapid transport processor in less than 90 seconds. The radiographic is comprised of tabular grain emulsion layers on opposite sides of a transparent film support and processing solution decolorizable dye particles in hydrophilic colloid layers interposed between the emulsion layers and the support. Hydrophilic colloid on each side of the support is in the range of from 35 to 65 mg/dm.sup.2, with the interposed layer containing hydrophilic colloid in the amount of at least 10 mg/dm.sup.2.

Abstract: In a processing method for silver halide color photosensitive material in which silver halide color photosensitive material is treated to produce a color dye image with a processing solution that has a fixing ability, and subsequently is not washed but treated with a washless stabilizing solution, the improvement comprising treating said silver halide color photosensitive material with a washless stabilizing solution that contains a triazinylstilbene optical brightening agent in the presence of an amount sufficient to stabilize the dye image and reduce staining of the photosensitive material of at least one compound represented by General Formula (I), (II), (II') or (II"): ##STR1##

Abstract: A radiation image storage panel comprising a phosphor layer which comprises a stimulable phosphor, in which said phosphor layer consists essentially of a sintered stimulable phosphor and has a relative density of not less than 70%. Processes for the preparation for the same are also disclosed.

Abstract: A safelight for use in handling a silver halide photographic light-sensitive material and a process for manufacturing a silver halide photographic light-sensitive material using the safelight. The safelight has an electroluminescence element as a light source and an effect to lower the fog formation tendency of the photographic material. And a silver halide photographic light-sensitive material manufactured in the safelight is improved on the allowable handling time in safelight.

Abstract: An electrographic luminescent amplification process is described which includes the steps of:a. forming a low amplitude differential voltage pattern on a photoconductor;b. developing the low amplitude differential voltage pattern with a luminescent toner to form a luminescent toner image;c. exciting the luminescent toner image to produce emitted radiation;d. exposing a photoconductor to the emitted radiation to produce a high amplitude differential voltage pattern on the photoconductor; ande. developing the high amplitude differential voltage pattern to produce a high density image.

Abstract: A silver halide photosensitive material comprising a support having thereon at least one silver halide emulsion layer comprising tabular grains whose diameter of an average projected area/average thickness ratio is 5/1 or higher is provided. Said emulsion layer contains one or more luminescent dyes whose luminescence quantum yield is 0.3 or more when its concentration is dry gelatin is 10.sup.-4 mol/dm.sup.3 at room temperature and that can be substantially removed by development processing, and the content of said luminescent dye is 3.0 .mu.mol/m.sup.2 or more for the total surface area of the silver halide grains in said emulsion layer, or is 2.0 mmol/dm.sup.3 or more in a hydrophilic dispersion medium excluding the silver halide grain surfaces in said emulsion layer.

Abstract: Disclosed is an improved autoradiography enhancer composition and method of use. The enhancer composition uses an acid anhydride as a dehydration agent.

Abstract: A radiation image storage panel comprising a support and a phosphor layer provided on the support which comprises a binder and stimulable phosphor particles dispersed therein, characterized in that said stimulable phosphor particles are covered with a polymer material.

Abstract: Photoluminescent materials for radiography are prepared using a base material, first and second dopants and a fusible salt. The base material is an alkaline earth metal sulfide such as strontium sulfide. Lithium fluoride is used to enhance the interdiffusion of materials. Samarium and cerium sulfide are used as the first and second dopants. Improved performance may be achieved by adding barium sulfate and/or cesium iodide. The photoluminescent material is made according to a process involving heating of the material to a fusing temperatue, grinding the material after cooling, and reheating the material to below the fusing temperature, but sufficiently high to repair the crystal surfaces. When cesium iodide is added it is mixed in after the grinding step. The material is then placed in a transparent binder and applied to a substrate, or deposited as a thin film directly on a substrate for different uses.

Abstract: An asymmetric radiographic element is disclosed comprised of a transparent film support, silver halide emulsion layer units of differing sensitometric characteristics coated on opposite sides of the film support, and a processing solution decolorizable means for reducing crossover to less than 10 percent. The radiographic element is positioned between intensifying screens and mounted in a cassette for exposure to X-radiation. A feature is included for ascertaining which of the emulsion layer units is positioned nearest a source of X-radiation during exposure.