Canon Kabushiki Kaisha

Canon Anelva Corporation

Juki Corporation

Yoichi Ando

Taro Hiroike

Hideaki Mitsutake

Akira Hayama

Hisaaki Kawade

Koji Yamazaki

Akira Fujii

Osamu Takamatsu

Junya Kawase

Fumio Kishi

Yasuo Ohashi

Yoichi Ikarashi

Norihiro Suzuki

Keisuke Yamamoto

Yuji Yamamoto

Mitsutoshi Hasegawa

Yasue Sato

Makoto Kojima

Masahiro Fushimi

Tamaki Kobayashi

Satoshi Mogi

Masahiro Tagawa

Kota Iwasaki

Hideshi Kawasaki

Tokutaka Miura

Kazuya Tsujino

Takayuki Sekine

Shinsuke Kojima

Yoshihisa Sanou

Minoru Ozaku

Tadashi Kozuka

An X-ray imaging apparatus includes an X-ray generation apparatus including an X-ray generation tube having an electron gun and a target configured to receive an electron beam from the electron gun to generate X-rays, a support structure supporting the tube, and a deflector configured to deflect the electron beam, an X-ray detector configured to detect the X-rays from the X-ray generation apparatus, and a control apparatus configured to control the X-ray generation apparatus. The support structure supports the tube to permit at least the target to be pivoted in a state in which the deflector is fixed, and the control apparatus determines, based on use amount of the X-ray generation apparatus and/or change of the X-rays generated by the X-ray generation apparatus, whether it is necessary to pivot the target.

X-ray generation apparatus, x-ray imaging apparatus, and adjustment method of x-ray generation apparatus

An X-ray generating apparatus includes an X-ray generating tube including an electron gun and a target configured to generate X-rays upon receiving an electron beam emitted from the electron gun, a deflector configured to deflect the electron beam, a driving circuit configured to apply an accelerating voltage between a cathode of the electron gun and the target, and an adjuster configured to adjust deflection of the electron beam by the deflector in accordance with the accelerating voltage or an amount of change in the accelerating voltage so as to reduce a change in incident position of the electron beam onto the target due to a change in the accelerating voltage.

X-ray generating apparatus, X-ray imaging apparatus, and method of adjusting X-ray generating apparatus

An X-ray generating apparatus includes an electron gun, a target configured to generate X-rays by being irradiated with an electron beam emitted from the electron gun, and a controller configured to control a first mode for thinning the target by irradiating the target with an electron beam with a current adjusted within a first current range and a second mode for generating X-rays by irradiating the target with an electron beam with a current adjusted within a second current range. The first current range has a lower limit larger than an upper limit of the second current range.

X-ray generating apparatus, method of adjusting target, and method of using X-ray generating apparatus

An X-ray generation device includes a cathode including an electron source generating an electron beam, an anode including a target to transmit an X-ray generated by collision of the electron beam, and a convergence electrode converging the electron beam toward the target. The target has a first region having a locally small thickness and a second region having a larger thickness than the first region. The X-ray generation device further includes a deflection unit to switch an incident position of the electron beam between the first region and the second region. The deflection unit has an adjustment mode to adjust an X-ray focal spot diameter and an X-ray generation mode to generate an X-ray, the electron beam is caused to enter the first region in the adjustment mode, and the electron beam is caused to enter the second region in the X-ray generation mode.

X-ray generation device and X-ray image capture system

An X-ray generating tube includes an insulating tube having a first open end and a second open end, a cathode including an electron emission source and arranged to close the first open end of the insulating tube, an anode including a target that generates an X-ray upon collision with electron from the electron emission source and arranged to close the second open end of the insulating tube, and a tubular electrical conductive member extending from the anode in an inner space of the insulating tube. The insulating tube includes a tubular rib at a position spaced apart from the first open end and spaced apart from the second open end, and the tubular rib is arranged in a radial direction when viewed from an end of the tubular electrical conductive member on a side of the cathode.

X-ray generating tube, X-ray generating apparatus, and X-ray imaging apparatus

An X-ray generating device includes an X-ray tube, an X-ray tube drive circuit, an electron acceleration voltage generation circuit, and a control unit communicating with the drive circuit and the voltage generation circuit, the X-ray tube, the drive circuit, and the voltage generation circuit are arranged inside a storage container filled with an insulating oil, a path connecting the drive circuit and the control unit includes an optical fiber cable arranged inside the storage container, the optical fiber cable has a coating that suppresses fluctuation due to a convective flow of the insulating oil, the coating is cured by, from a resin material containing a plasticizer, a part of the plasticizer being leaching out, and the control unit is configured to facilitate leaching of the plasticizer by driving the voltage generation circuit to apply a voltage to the optical fiber cable in a state of no X-ray being generated.

X-ray generating device and X-ray photography system

An X-ray generation apparatus includes an X-ray tube; a drive circuit that drives the X-ray tube; a voltage generation circuit that generates an electron acceleration voltage applied to the X-ray tube; and a control unit that communicates with the drive circuit, and at least the X-ray tube, the drive circuit, and the voltage generation circuit are arranged inside a storage container filled with an insulating oil. At least a part of a path connecting the drive circuit and the control unit is formed of an optical fiber cable arranged inside the storage container, and the optical fiber cable has electric field mitigation means for suppressing an electric field occurring due to a potential difference between the drive circuit and the control unit from locally concentrating along a longitudinal direction of the optical fiber cable.

X-ray generation apparatus and X-ray photography system

X-ray generating device and x-ray photography system

Provided is a radiation generating apparatus, including: a radiation generating unit for emitting radiation; and a movable diaphragm unit including a light projecting/sighting system for making a simulation display of a radiation field with visible light. The light projecting/sighting system includes: a light source of the visible light; a light guiding plate that is provided across a radiation axis, and causes the visible light from the light source to exit from a front surface of the light guiding plate; and a louver that gives directivity to the visible light exiting from the front surface of the light guiding plate.

Radiation generating apparatus and radiation imaging system

A radiation generating apparatus includes a radiation generating unit and a diaphragm unit that functions as a projector-collimator configured to simulate a radiation field with a visible-light field. The diaphragm unit includes a light source configured to generate visible light, an optical lens configured to control a state of diffusion of the visible light emitted from the light source, and field-limiting blades. The light source and the optical lens are provided between a radiation emission window and the field-limiting blades. The light source is movable into and retractable from a path of radiation generated by the radiation generating unit.

A manufacturing method of a vacuum airtight container includes a baking step of baking, in a vacuum atmosphere, a container in which a first non-evaporable getter and a second non-evaporable getter having an activation temperature higher than that of the first non-evaporable getter are disposed. The baking step further includes steps of baking the entire container by increasing the temperatures of the container to a temperature Tand holding the temperature T, which is equal to or higher than an activation temperature of the first non-evaporable getter and is lower than an activation temperature of the second non-evaporable getter. After holding the temperature T, the entire container is baked by increasing the temperature of the container to a temperature T, which is higher than the activation temperature of the second non-evaporable getter.

Manufacturing method of vacuum airtight container

Provided is a manufacturing method of forming an airtight container including an electron beam irradiation process for irradiating an electron beam to a non-evaporable type getter that has not been activated so as not to activate the non-evaporable type getter, and a sealing process for sealing a seal portion after the electron beam irradiation process.

Airtight container manufacturing method involves irradiating an electron beam to a non-evaporable type getter so as not to activate it before a sealing process

The invention provides an image forming apparatus in which orbit shift can be prevented to perform good image display in an electron beam emitted from the electron-emitting device adjacent to the spacer when an antistatic spacer coated with a high resistance film is used. A surface shape is controlled by forming a fine particle film on the surface of a row directional wiringin which a spaceris arranged, the electron emission is realized from electron-emitting areasandnear contacting areasandin a non-contacting areain which the spaceris not in contact with the row directional wiringand the non-contacting areaof the spaceris irradiated with the electron to decrease a potential, which allows a good equipotential lineto be formed.

Surface conduction electron emitter display

An electron beam apparatus in which a spacer having a high-resistance film coating a surface of a base material is inserted between a rear plate having electron emitting elements and row-direction wires, and a faceplate having a metal back. The row-direction wires and the metal back are electrically connected via the high-resistance film. An electric field near an electron emitting element near the spacer is maintained to substantially constant irrespective of the positional relationship between the spacer and the electron emitting element near the spacer. When a sheet resistance value of the high-resistance film on a first facing surface of the spacer that faces a row-direction wire is represented by R, and a sheet resistance value of the high-resistance film on a side surface adjacent to the electron emitting element is represented by R, R/Ris 10 to 200.

Electron beam apparatus, and method for manufacturing a spacer used for the same

To prevent an irregular shift of an electron beam emitted from an adjacent electron emitting device when preventing electrification of a spacer covered with a resistance film by using the spacer. A spaceris set along a row-directional wiringconnected to a plurality of electron emitting devicesof a first substrate and a resistance filmformed on the surface of the spaceris brought into contact with and electrically connected to a conductive membersuch as a metal backing on a second substrateand the row-directional wiringon the first substrate while the shape of the contact face between the resistance filmand the row-directional wiringor the resistance filmand the conductive memberhas a concave shape or convex shape to be almost symmetric with respect to the center line of the spacer

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Tokyo, Japan

Yoichi Ando