Canon Kabushiki Kaisha

Mitsutoshi Hasegawa

Kazuya Shigeoka

Yoshikazu Banno

Masahiko Miyamoto

Etsuro Kishi

Kazuhiro Sando

Yoshihiro Yanagisawa

Miki Tamura

Tetsuya Kaneko

Yasue Sato

Noritaka Ukiyo

Seiji Mishima

Osamu Takamatsu

Noriaki Ohguri

Toru Sugeno

Ichiro Nomura

Masato Yamanobe

Toshifumi Yoshioka

Koichi Tsunoda

Takeo Tsukamoto

Toshihiko Takeda

Keisuke Yamamoto

Hidetoshi Suzuki

Kazuyuki Ueda

Nobuhiro Ito

Takayuki Teshima

Sotomitsu Ikeda

Yasuhiro Hamamoto

Shuji Aoki

Shinichi Kawate

Yoichi Ikarashi

Kazuya Tsujino

Kunio Takada

Takashi Shiozawa

An X-ray generation tube includes: an anode including a target configured to generate X-rays under irradiation of electrons, and an anode member electrically connected to the target; a cathode including an electron emitting source configured to emit an electron beam in a direction towards the target, and a cathode member electrically connected to the electron emitting source; and an insulating tube extending between the anode member and the cathode member. The anode further includes an inner circumferential anode layer electrically connected to the anode member, the inner circumferential anode layer extending along an inner circumferential face of the insulating tube, and is remote from the cathode member.

X-ray generation tube, X-ray generation apparatus, and radiography system

Provided is an X-ray generating tube with improved withstand voltage property by a simple structure, the X-ray generating tube including a cathode connected to one opening of an insulating tube and an anode connected to the other opening, in which a resistive film having a lower sheet resistance value than that of the insulating tube is disposed on an outer periphery of the insulating tube, and the cathode and the anode are electrically connected to each other via the resistive film.

X-ray generating tube, X-ray generating apparatus and X-ray imaging system using the same

In a radiation tube, a conductive member having an opening formed therein is disposed, and a dielectric is disposed in the conductive member. Thus, foreign matter that has entered the conductive member through the opening is trapped by the dielectric. As a result, discharge due to foreign matter can be reduced.

Radiation tube, radiation generating apparatus, and radiation imaging system

A radiation generating apparatus of the present invention includes an envelopeincluding a first windowallowing radiation to pass; a radiation tubethat is accommodated in the envelope, and includes a second windowallowing radiation to pass, at a position opposite to the first window; a radiation passing holethat is thermally connected to the second windowand communicates with the second window; and a radiation shielding memberprotruding from the second windowtoward the first window. In this apparatus, a thermally conductive memberhaving a higher thermal conductivity than the radiation shielding memberis connected to an outer periphery of the protruding portion of the radiation shielding member. The simple configuration can shield unnecessary radiation, and cool the target, while facilitating reduction in weight.

Radiation generating apparatus and radiation imaging apparatus

Provided is a radiation generating tube in which an insulating tube is prevented from being damaged by heat generation of a target or an electron emitting source during drive. Extending portions extending along an outer periphery of an insulating tube are provided to a cathode and an anode, respectively, and the insulating tube is joined to the extending portions to enhance the strength of joint portions. At the same time, the insulating tube can be deformed easily by setting a tube wall thickness of the insulating tube at a central portion in a longitudinal direction to be smaller than a tube wall thickness of an opening end, and thus the concentration of thermal stress on the joint portions caused by an increase in temperature of the cathode and the anode is alleviated.

Radiation generating tube, and radiation generating apparatus and radiation imaging system using the same

A radiation generating tube includes an electron emitting source configured to emit an electron beam; a target configured to generate radiation when the target is irradiated with the electron beam; a rear shield body having a tube-shaped electron passage with openings thereof at each end of the passage, and being located at the side of the electron emitting source with respect to the target, a first opening of the passage facing the electron emitting source and being separated from the electron emitting source, a second opening of the passage facing the target; and a brazing material joining the rear shield body with a peripheral edge of the target, at a position separated from the second opening. A closed space isolated from the electron passage is provided between the target and the rear shield body.

Radiation generating tube, and radiation generating device and apparatus including the tube

An electrostatic lens includes multiple electrodes each having a through hole, and an insulating spacer that is provided between the electrodes and that fixes an interval between the electrodes. Both surfaces of the spacer are bonded with the electrodes opposing each other so that the spacer is integral with both the electrodes. A protective film is disposed on both surfaces of each of the electrodes. The protective film is present on the interior wall of the through hole and in a region around the through hole on the surface of the electrode. The region extends continuously from the interior wall to an end portion of the electrode. The protective film is not present at an interface between the electrode and the spacer.

Electrostatic lens

An electron source substrate including: a substrate; an electron-emitting device having a pair of device electrodes locating on the substrate and an electroconductive thin film which is provided between the device electrodes and has an electron-emitting region; and an antistatic film which is come into contact with at least the pair of device electrodes and covers over an exposed surface of the substrate, wherein a leakage current flowing between the device electrodes in a non-driving mode at a low voltage is suppressed. A high-impedance portion which obstructs the current caused across the pair of device electrodes through the antistatic film is provided in the antistatic film.

Electron source substrate with high-impedance portion, and image-forming apparatus

A novel process for producing an electron source substrate is disclosed for formation of electron-emitting element at high efficiency with less shape irregularity. In the process, the region for electroconductive film formation is divided into plural subregions on which an electroconductive film is formed respectively. In forming the electroconductive film by application of plural liquids, the time interval between the application of the two drops is controlled to be larger than the time length necessary for suppressing the spreading of the succeedingly applied liquid within an allowable limit.

Method for production of electron source substrate provided with electron emitting element and method for production of electronic device using the substrate

A method of manufacturing an electronic device including a step of giving a droplet of a liquid containing a formation material of a member that constitutes the electronic device to a plurality of portions on a substrate while said substrate and a droplet ejecting portion are moved relatively in an in-surface direction of said substrate , wherein the droplet is given while a position on a droplet given surface to which the droplet is given is corrected in accordance with the distribution of distances between the ejecting portion and the droplet given surface on the substrate which occurs when the substrate and the ejecting portion are relatively moved. Thereby forming the member constituting the electronic device accurately at the plural portion on the substrate , and thus forming plural electronic device of same charactoristics.

Electronic device, method for producing electron source and image forming device, and apparatus for producing electronic device

A method of producing an electron-emitting device includes the steps of forming a pair of electrodes and an electrically-conductive thin film on a substrate in such a manner that the pair of electrodes are in contact with the electrically-conductive thin film and forming an electron emission region using the electrically-conductive thin film, wherein a solution containing a metal element is supplied in a droplet form onto the substrate thereby forming the electrically-conductive thin film.

Electron-emitting device, electron source substrate, electron source, display panel and image-forming apparatus, and production method thereof

Disclosed herein is a process for producing a printed substrate, comprising a step of applying droplets of a liquid containing a material for a desired component to be formed on a substrate to the surface of the substrate to form the component on the substrate, wherein the process comprises, prior to the step of applying the droplets to the substrate surface, a step of subjecting the substrate to a surface treatment in such a manner that the contact angle of the droplet applied with the surface of the substrate falls within a range of from 20&deg; to 50&deg;.

Production processes of printed substrate, electron-emitting element, electron source and image-forming apparatus

Disclosed is a method, for forming a film locally on a substrate, which comprises the steps of detecting the state of the substrate employing the obtained result to calculate positional information concerning a plurality of locations at which the material for the film is to be provided to form the film, and providing the material for the film at the plurality of locations based on the positional information that is obtained for the plurality of locations.

Film formation method, method for fabricating electron emitting element employing the same film, and method for manufacturing image forming apparatus employing the same element

Growing community of inventors

Atsugi, Japan

Kazuhiro Sando