40results about "Sensitometric processes" patented technology

A photothermographic imaging material including a support; an image forming layer containing an organic silver salt, a photosensitive silver halide, a binder and a silver ion reducing agent, the image forming layer being provided on the support; and a cyan coloring leuco dye. The photosensitive silver halide contains silver halide grains having a mean particle size of 10 to 50 nm, and the silver ion reducing agent is a compound represented by the following Formula (A-3)

A silver salt photothermographic dry imaging material including non-photosensitive aliphatic carboxylic acid silver salts; a photosensitive emulsion containing photosensitive silver halide grains; a silver ion reducing agent; a binder; and a cyan coloring leuco dye. A percentage of the photosensitive silver halide grains having a mean particle size of 0.01 or more μm and 0.04 μm or less is 5% or more by mass and 50% or less by mass of total photosensitive silver halide grains by conversion into a silver amount.

Provided is a photothermographic material containing on one side of a support a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent for silver ion and a binder, characterized in that an image obtainable after the light exposure and development satisfies a condition expressed as below:(where, DELTABG0.5 represents a value obtained by subtracting 0.5 from an optical density observed through a B filter of an image portion giving an optical density of 0.5 observed through a G filter, and DELTABG2.5 represents a value obtained by subtracting 2.5 from an optical density observed through a B filter of an image portion giving an optical density of 2.5 observed through a G filter.) The photothermographic material is suitable enough for medical diagnosis, and in particular for diagnosis of lung field.

The invention discloses a method for preparing an exposure curve for radiographic inspection. The method comprises the following steps of (1) placing films and X-ray dosimeters on a stair test block; (2) exposing; (3) washing and drying the exposed films, utilizing a nigrometer to measure blackness values of negative films, reading accumulated doses corresponding to the blackness values to obtain a group of blackness values, and then finding an accumulated variable H corresponding to a standard blackness; (4) transilluminating a testing block to be detected with certain thickness under different transillumination conditions, stopping the transillumination when the accumulated variable is H, and recording light exposure at the time; (5) repeating the step (4) for multiple times to obtain a plurality of groups of light exposure under different transillumination conditions; (6) obtaining the exposure curve according to the thickness, the blackness values and the transillumination conditions of the transilluminated testing block to be detected with the certain thickness. According to the method for preparing the exposure curve for radiographic inspection, based on a relative relation between the blackness and the light exposure, the exposure curve can be obtained by only developing the films once, so that a plurality of films can be saved, and time-saving and labor-saving operation can be realized.

Disclosed is a silver halide photographic light-sensitive material in the shape of a light-shielded light-sensitive material roll, which has a characteristic curve drawn in orthogonal coordinates of logarithm of light exposure (x-axis) and optical density (y-axis) using equal unit lengths for the both axes, on which gamma is 5.0 or more for the optical density range of 0.3-3.0. There is provided a silver halide photographic light-sensitive material in the shape of a light-shielded light-sensitive material roll suffering from little influence on photographic properties after long term storage.

Disclosed is a silver halide photographic photosensitive material which includes a support and at least one silver halide photosensitive layer on the support, wherein the average equivalent sphere diameter of the silver halide of the silver halide photosensitive layer is 0.30 μm or less, the silver halide photosensitive layer includes four or more kinds of silver halide grains having mutually different average equivalent sphere diameters, and the thickness between a surface of the support at a side at which the silver halide photosensitive layer is provided and a surface of the silver halide photosensitive layer at a side opposite to the support is 10 μm or less.

The present invention provides a black and white photothermographic material including, on at least one side of a support, at least a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent for silver ions, a color developing agent, and a coupler which reacts with an oxidation product of the color developing agent to form a dye, wherein a total amount of ammonia included on one side of the support having thereon the photosensitive silver halide is from 5 mg / m2 to 25 mg / m2, and an optical density of an image formed by imagewise exposing and thermally developing the black and white photothermographic material satisfies the following equation (A):0.02<Dc<D / 4   Equation (A)wherein D represents an optical density in a range of from 1 to 2, and Dc represents an optical density obtained by the dye in the optical density of the image.

The present invention provides a black and white photothermographic material having, on at least one side of a support, an image forming layer including at least a photosensitive silver halide and a non-photosensitive organic silver salt, and a non-photosensitive layer including at least a coupler, wherein at least one of the image forming layer and the non-photosensitive layer includes a color developing agent; a grain density of the photosensitive silver halide in the image forming layer is from 20 grains / μm3 to 103 grains / μm3; and an optical density of an image formed by imagewise exposing and thermally developing the black and white photothermographic material satisfies the following equation (A):0.02<Dc<D / 4   Equation (A)wherein D represents a value of an optical density in a range of from 1.0 to 2.0; and Dc represents an optical density obtained by the dye in the optical density of the image.

Disclosed is a silver halide photographic light-sensitive material comprising at least one silver halide emulsion layer on a support, which contains at least one organic gold compound and has a characteristic curve drawn in orthogonal coordinates of logarithm of light exposure (x-axis) and optical density (y-axis) using equal unit lengths for the both axes, on which gamma is 5.0 or more for the optical density range of 0.3-3.0. This silver halide photographic light-sensitive material provides high contrast and high sensitivity.

The present invention provides a black and white photothermographic material having, a first image forming layer including at least a photosensitive silver halide, a non-photosensitive organic silver salt, and a reducing agent for silver ions, wherein the black and white photothermographic material further has a second image forming layer including at least a coupler, and at least one of the first image forming layer and the second image forming layer includes a color developing agent. A black and white photothermographic material which exhibits high sensitivity, excellent image tone, and excellent storage stability is provided.

Disclosed is a silver halide photographic light-sensitive material comprising at least one silver halide emulsion layer on a support, which contains a compound of which one-electron oxidized derivative produced by one electron oxidation of the compound is capable of releasing two or more electrons with a bond cleavage and has a characteristic curve drawn in orthogonal coordinates of logarithm of light exposure (x-axis) and optical density (y-axis) using equal unit lengths for the both axes, on which gamma is 5.0 or more for the optical density range of 0.3-3.0. This silver halide photographic light-sensitive material shows high contrast and high sensitivity.

A photothermographic imaging material packed in a packaging material, the imaging material including a support having thereon light-insensitive organic silver salt grains, photosensitive silver halide grains, a reducing agent for silver ions and a binder, wherein the packaging material has a water permeability of not less than 5.0 g / m2 measured at a temperature of 40° C. with a relative humidity of 90% for 24 hours; and the imaging material has a first photographic speed and a second photographic speed and the second photographic speed is not more than 1 / 10 of the first photographic speed, the measuring methods of the first and the second photographic speeds being defined inn the specification.

A target (10, 20) is disclosed suitable for setting the exposure and white balance of a photographic digital camera. The target (10, 20) comprises a target surface (12) that has a reflectance of 18% for all wavelengths of visible light. The target surface (12) is provided with a feature (16) upon which the camera is able to focus.

Disclosed is a silver halide photographic light-sensitive material having a layer containing a compound of the following formula and a fluorine compound, and has a gamma of 5.0 or more for the optical density range of 0.3 to 3.0: wherein R1 is alkyl or alkenyl, R2 are H, alkyl, alkenyl, aralkyl or aryl, l1 is 1-10, m1 is 1-30, n1 is 0-4, a is 0 or 1, and Z1 is OSO3M or SO3M where M is cation.

An image processing apparatus, comprising: an exposing device for exposing an image forming material so as to form a latent image on the image forming material based on image data; a thermal developing device for developing and visualizing the latent image on the exposed image forming material so as to form an image; a measuring device for measuring the image density of the image on the developed image forming material; a calibrating device for forming a table to define a relation between an image signal and image density on the basis of plural different test image data and measured-image densities thereof; a counting device for counting the number of the image forming material developed within predetermined time; and a controlling device for controlling the exposing device, the thermal developing device, the measuring device, the calibrating device and the counting device; wherein the controlling device stop forming the table for predetermined time when the counting device counts the number of the developed image forming material more than predetermined number.

The present invention provides a method of forming a digital images exhibiting superior clearness in line images and superior visual whiteness. An image forming method of the invention comprises exposing a silver halide photographic material and processing the photographic material, wherein the photographic material contains a compound represented by the following formula (1) and a white area of the processed photographic material exhibits perception chromaticity indexes a and b of from 0.0 to +2.0 and from −2.2 to −4.0, respectively, in which the foregoing a and b are defined in JIS-Z-8730 and measured in accordance with a method defined in JIS-Z-8722:

Disclosed is a silver halide photographic light-sensitive material having a support containing a filler and / or an undercoat layer containing a clay compound coated with an organic substance between the support and an emulsion layer or between the support and a back layer. The silver halide photographic light-sensitive material shows good dimensional stability in a processing system.

Disclosed is a silver halide photographic light-sensitive material comprising at least one silver halide emulsion layer on a support, wherein 40 mol % or more of silver halide contained in the silver halide emulsion layer is silver bromide and the silver halide contains 1x10<-6 >mole or more per mole of silver of a metal complex containing one or more cyanide ligands, and the silver halide photographic light-sensitive material has a characteristic curve drawn in orthogonal coordinates of logarithm of light exposure (x-axis) and optical density (y-axis) using equal unit lengths for the both axes, on which gamma is 4.0 or more for the optical density range of 0.1-1.5. There is provided a silver halide photographic light-sensitive material showing high contrast and high sensitivity.

The present invention provides a photothermographic material including on one surface thereof a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent and a binder, and satisfying a relationship of image tone defined by Expression (1): (a*121t−a*117t)2+(b*121t−b*117t)2<2,  (1) wherein a*121t and b*121t each represent a value of CIELa*b* obtained by thermal development at a developing temperature of 121° C. for t (sec), and a*117t and b*117t each represent a value of CIELAB obtained by thermal development at a developing temperature of 117° C. for t (sec), the values occurring at an optical density of 1.2; and t represents a duration (sec) required to attain a maximum density when the material has been exposed to sufficient light for producing Dmax and is developed at 121° C. The invention also provides an image forming method using the photothermographic material.

Disclosed is a silver halide photographic light-sensitive material comprising at least one silver halide emulsion layer on a support, which contains a fluorine compound having two or more fluorinated alkyl groups having two or more carbon atoms and 11 or less fluorine atoms and having at least one of an anionic hydrophilic group and a nonionic hydrophilic group, and has a characteristic curve drawn in orthogonal coordinates of logarithm of light exposure (x-axis) and optical density (y-axis) using equal unit lengths for the both axes, on which gamma is 5.0 or more for the optical density range of 0.3-3.0. There is provided a silver halide photographic light-sensitive material that provides high sensitivity, high contrast, favorable half tone dot quality and superior storage stability.

The invention relates to a display material comprising a base said base comprising a polyolefin sheet comprising at least one voided polyolefin diffusion layer, at least one topside photosensitive silver halide layer on the topside of said base and at least one bottom side photosensitive layer on the bottom side of said base, below said bottom side emulsion a tone enhancing layer and below said tone enhancing layer an antihalation layer wherein said display material has a light transmission of between 35 and 60 percent in the developed Dmin areas of the display material.

The invention relates to a method for radiographic inspection and compensation. The key point is to use a comparison method to measure the blackness value of different films, and use the characteristic curve test data of different films to make different film characteristic curves and select the film suitable for radiographic inspection. ; Verify the rationality and reliability of the effective transillumination area selection by measuring the beam uniformity of the X-ray machine; finally, before the parts are transilluminated, the density of the filling compensation powder should be the same or similar to the density of the material to be inspected, At the same time, the absorption and attenuation of rays should be similar. The particle size of the filling powder should be 0.1-0.3 mm, and the powder filling should be dense without leaving gaps. The advantages and effects of the present invention are that a reasonable and effective radiographic inspection process is provided, the inspection quality can be guaranteed, the method is simple, the operation is convenient, the efficiency is high, the equipment cost is low, and the cost can be greatly reduced. This method is suitable for general industrial production environment in the application.