Konica Corporation

Konishiroku Photo Industry Co., Ltd.

Chika Honda

Hiromu Ohara

Akio Suzuki

Akira Ishisaka

Masatoshi Iwata

Masayuki Nakazawa

Iku Metoki

Katsutoshi Machida

Hiroshi Kita

Takeshi Habu

Kiyoshi Sato

Haruhiko Sakuma

Takeo Koitabashi

Yasunori Wada

Akira Yamano

Eiji Yoshida

Kazuo Genda

Masumi Hosaka

A method of recording a transmission image composed of dots on a recording medium having the steps of; moving a recording medium in a sub-scanning direction, and moving a recording head relatively with respect to the recording medium in a main scanning direction which is crossing the sub-scanning direction, wherein a diameter D of a dot recorded on said recording medium falls within a range expressed by 1.5A&#x2266;D&#x2266;A+150 [&#x3bc;m], wherein,=max(),

Image recording method and apparatus

A X-ray image radiographing method of detecting a X-ray image passing an object irradiated with X-ray emitted from a X-ray tube by a X-ray detector, includes a step of increasing a sharpness of an image lowered due to penumbra by enhancing an edge of the image with refraction contrast enhancement.

X-ray image radiographing method and radiographing apparatus

An X-ray image radiographing system for radiographing a subject is provided with an X-ray source to emit X-rays; a digital X-ray detector to detect a digital X-ray image of the subject, wherein the subject is placed between the X-ray source and the digital X-ray detector in an arrangement to satisfy the following formulas so that an edge of the digital X-ray image is enhanced oven an edge-enhanced width: 0.1 m&#x2266;R&#x2266;10 m, and 0.15 m&#x2266;R&#x2266;10 m, where Ris a distance between the X-ray tube and the subject and Ris a distance between the subject and the digital X-ray detector. The digital X-ray detector has a pixel size almost equal to the half of the edge-enhanced width.

Digital phase contrast X-ray radiographing system

A radiation image detector is provided with a first layer to emit light corresponding to a strength of a radiation incident thereon; a second layer to convert the light emitted from the first layer into electric energy; a third layer to accumulate the electric energy obtained by the second layer and to output a signal based on the accumulated electric energy so that the radiation image detector outputs an image signal corresponding to the incident radiation based on the signal outputted from the third layer; and a forth layer made of a resin and to hold the first, second and third layers.

Radiation image detector

In an ink-jet recording apparatus, when an intensity of the energy of electromagnetic waves of a predetermined region is E and an optical density of the image recorded on a recording medium based on an image signal is D, a controller conducts the image recording such that a characteristic curve representing a change of the optical density D for a logarithm of the energy intensity E becomes a monotone increasing function or a monotone decreasing function. When &ggr; , &ggr; and &ggr; are defined on the characteristic curve such that an inclination of a line connecting points corresponding to E and E is &ggr; , an inclination of a line connecting points corresponding to E and E is &ggr; , and an inclination of a line connecting points corresponding to E and E is &ggr; , the characteristic curve is determined so as to satisfy the following formulas: &verbar;&ggr; &verbar;<&verbar;&ggr; &verbar; and &verbar;&ggr; &verbar;<&verbar;&ggr; &verbar;. The image recording for the energy intensity E between E and E is conducted based on &ggr; , the image recording for the energy intensity E between E and E is conducted based on &ggr; , and the image recording for the energy intensity E between E and E is conducted based on &ggr; .

Ink jet recording method and apparatus for monochromatic medical image

Recording medium for ink-jet printer

A X-ray image forming method, comprising steps of: conducting a magnifying radiography by irradiating an object with divergent X-ray emitted from a X-ray tube; and forming a X-ray image by detecting X-ray passing through the object by a X-ray detector; wherein the magnifying radiography is conducted to satisfy the following formula: 9E&gE;B, where B is a width (&mgr;m) of a blurred portion of the X-ray image caused by penumbra and E is a width (&mgr;m) of an edge portion enhanced by X-ray refraction contrast.

X-ray image radiographing method and X-ray image radiographing apparatus

A photographic combination for use in radiography to project a refraction contrast image is disclosed, comprising a radiographic intensifying screen and a silver halide light sensitive photographic material, wherein the photographic material comprises a support having on only one side of the support a light sensitive layer, the photographic combination exhibiting a speed of 200 to 750. A radiographic system comprising an X ray source and the photographic combination is also disclosed.

Photographic combination for use in radiography

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.

Silver halide photographic light-sensitive material

Disclosed is a light-sensitive silver halide photographic material having at least one layer comprising a silver halide photographic emulsion, wherein the silver halide photographic emulsion is obtained by addition of a spectral sensitizing dye during the desalting step in obtaining the emulsion. According to the present invention, there can be obtained a highly sensitive light-sensitive material with little stain, good pressure blackening performance and yet great absorption of the dye.

High sensitivity light-sensitive silver halide photographic material

A light-sensitive silver halide photographic material for X-ray photography characterized in that the material has the characteristic curve whose gamma between optical densities of 0.50 and 1.50 is 2.7 to 3.3 and gamma between optical densities of 2.00 and 3.00 is 1.5 to 2.5, when processed by use of the following developer:

Light-sensitive silver halide photographic material for X-ray photography

A silver halide photographic light-sensitive material having high sensitivity and high covering power, particularly suitable for use in radiography comprising on a support, a silver halide emulsion layer having silver halide grains which have a grain-size distribution curve comprising at least two peaks of which in the mode form, the highest peak mode and another peak mode adjacent thereto stand leaving a space of 0.10.mu. to 0.30.mu. therebetween. An orthochromatic dye-sensitizer increases the sensitivity.

Silver halide photographic radiography light-sensitive material

A silver halide X-ray photosensitive material has a support bearing thereon a silver halide emulsion layer. The layer has at least three kinds of silver halide emulsions whose photographic characteristics are substantially different from each other. Out of at least three kinds of the silver halide emulsions, at least one of them is a monodisperse emulsion E.sub.1 and at least another one of them is a polydisperse emulsion E.sub.2.

Silver halide X-ray photosensitive material

A silver halide photographic material comprising a base having formed thereon a silver halide emulsion layer substantially made of two or more monodisperse emulsions having different average grain sizes in the range of from 0.2 to 3.0 .mu.m is disclosed. The grain size distribution curve of the silver halide grains in said emulsion layer has two or more peaks, and the distance between the highest peak and the second highest peak is at least 0.3 .mu.m.

Silver halide photographic material

A light-sensitive silver halide photographic material comprising a combination of a salt of tetrazolium containing only a non-metallic anion and a salt of tetrazolium containing a metallic anion.

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Hino, Japan

Chika Honda