Canon Kabushiki Kaisha

Canon Anelva Corporation

Junya Kawase

Shinji Yamamoto

Hiroshi Saito

Takeo Tsukamoto

Toru Nakakubo

Nobuhiro Ito

Yoichi Ando

Manabu Sueoka

Yohji Ara

Yasuyuki Tamura

Koji Yamazaki

Yohei Nakamura

Hiroshi Netsu

Tsutomu Kawai

Hiromitsu Morita

Tsunenori Soma

An X-ray generating apparatus comprises a storage housing, an insulating housing arranged in the storage housing, an X-ray generating tube arranged at least partly in the insulating housing, and a plurality of electrical components arranged in the insulating housing. In the X-ray generating apparatus, the plurality of electrical components include a mold transformer, the mold transformer includes a core, an insulator covering the core, and a heat-dissipating path configured to move heat from the core to an external space of the insulator, and the heat-dissipating path includes a hole provided in the insulator to extend from the external space toward the core.

X-ray generating apparatus, x-ray imaging apparatus, and mold transformer

X-ray generating apparatus includes X-ray generating unit having first and second bottom surfaces and side surface; driving circuit; accommodation housing accommodating the X-ray generating unit and the driving circuit; and insulating component arranged in the accommodation housing and having first insulating member arranged between the driving circuit and the accommodation housing and second insulating member arranged between the X-ray generating unit and the accommodation housing. First space is defined between the first insulating member and the accommodation housing, second space is defined between the second insulating member and the accommodation housing, third space is defined between the side surface and the second insulating member, fourth space is defined by the second bottom surface and internal surface of the first insulating member. The second space communicates with the third space, the first space communicates with the fourth space.

X-ray generating apparatus and X-ray imaging apparatus

X-ray generating apparatus, X-ray imaging apparatus, and mold transformer

An electric component includes an electric circuit and a metal container covering the electric circuit. The metal container includes a side wall portion surrounding the electric circuit, and a closing portion forming an end surface of the metal container while covering an end portion of the side wall portion. An exposed surface of an outer peripheral portion of the closing portion exposed to an outside of the metal container has a roundness in a section perpendicular to the end surface.

Electric component, X-ray generation apparatus, and X-ray imaging apparatus

An X-ray generation apparatus includes an X-ray generation unit, a storage container configured to store the X-ray generation unit, and an insulating component arranged between an inner surface of the storage container and at least a part of the X-ray generation unit. The insulating component includes a first insulating member and a second insulating member, the first insulating member includes a first portion having a first surface, and a second portion having a second surface, a step difference is formed by the first surface and the second surface, and the second portion has a thickness smaller than that of the first portion, an adhesive surface of the second insulating member and the second surface of the first insulating member are connected by an adhesive material, and a flatness of the second surface is better than a flatness of the first surface.

X-ray generation apparatus and X-ray imaging apparatus

X-ray generation apparatus includes X-ray generation tube having cathode and anode, voltage supply for supplying voltage to the X-ray generation tube via conductive line, storage container including first portion forming first space storing the voltage supply, second portion forming second space having width smaller than that of the first space and storing the X-ray generation tube, and connecting portion connecting the first and second portions to form internal space in which the first space and the second space communicate, and insulating member arranged in the internal space to block shortest path between the conductive line and convex portion of the connecting portion. The insulating member is formed by connecting members by adhesive material, and is configured to block linear path between the adhesive material and the conductive line and linear path between the adhesive material and the cathode.

In an X-ray generating apparatusin which an X-ray tubeis anode-grounded to a protruding portionof a container, electrical discharge between the X-ray tubeand the containeris reduced. The containerincludes the protruding portionin such a way that, in the axial direction Dt, a bent portionis positioned between an anode-side joint portionwhere the insulating tubeand the anodeare joined to each other and a cathode-side joint portionwhere the insulating tubeand the cathodeare joined to each other.

X-ray generating apparatus

An X-ray generation apparatus includes an X-ray generation tube including a cathode having an electron emitting portion, and an anode having a target, a voltage supply supplying voltage to the X-ray generation tube via a conductive line, a storage container having a first portion forming a first space storing the voltage supply, a second portion forming a second space storing the X-ray generation tube, and a connecting portion connecting the first portion and the second portion, and an insulating liquid filling internal space of the storage container. The connecting portion includes a convex portion pointed toward the internal space. The cathode is arranged between the convex portion and the anode, and an insulating member is arranged to surround portion of the conductive line and block shortest path between the conductive line and the convex portion.

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

A mammographic CT apparatus includes: a gantry, including a front face plate having an insertion opening for inserting a breast into an accommodation portion; a radiation tube disposed within the gantry; a sensing device disposed within the gantry so as to face the radiation tube, to detect radiation which has been emitted from the radiation tube and been transmitted through the accommodation portion; a driving unit to rotate the radiation tube and the sensing device around a rotation axis set in the normal direction of the insertion opening, at the same angular speed and same direction; and a collimator configured to rotate around the rotation axis synchronously with the radiation tube and sensing device. The collimator is disposed near the accommodation portion, and an irradiation region of radiation emitted from the radiation tube is restricted such that a breast inserted to the accommodation portion is irradiated to the tip.

Computed tomographic mammography apparatus

X-ray generating device and x-ray photography system

A mammographic CT apparatus includes: a gantry, including a front face plate in which an insertion opening is formed for inserting a breast into an accommodation portion a radiation tube and sensing device disposed within the gantry; a driving unit configured to rotate the radiation tube and the sensing device around a rotation axis set in the normal direction of the accommodation portion, at the same angular speed and in the same direction; a collimator disposed between the accommodation portion and the radiation tube, and configured to rotate around the rotation axis integrally with the radiation tube and sensing device; and an annular shield disposed between the rotational path of the collimator and the rotational path of the radiation tube, having an annular gap corresponding to the rotational path of the collimator, wherein an edge of the collimator or sensing device is fit into the gap.

Computed tomographic mammography apparatus and computed tomographic apparatus for breast

Heat dissipation of a target is enhanced in a transmissive X-ray generating apparatus where an anode member constitutes a part of a container. An anode member configured to hold a target is divided into an outer anode member, which is configured to hold the target and is connected to a container, and an inner anode member, which is joined to an insulating tube and is closer to an electron emitting portion than the outer anode member is. The outer circumferential surface of the inner anode member is joined to the outer anode member via a joining member. Heat generated by the electron emitting portion is dissipated mainly from the inner anode member via the insulating tube, or directly, to an insulating liquid.

X-ray generating apparatus and radiography system using the same

There is provided an inkjet apparatus capable of adjusting pressure in an inkjet head to a predetermined slightly negative pressure without limitations on the installation location of a pressure adjustment unit and without stopping the flow of liquid. The inkjet apparatus includes an inkjet head for discharging ink droplets and an ink tank for retaining liquid to the inkjet head. The inkjet apparatus further includes a liquid feeding unit communicating with the inkjet head and configured to feed the liquid in the ink tank to the inkjet head by reducing the pressure in the inkjet head, an open-close valve configured to open or close a flow channel connecting the inkjet head and the liquid feeding unit, and a pressure adjustment unit configured to open or close the open-close valve according to a pressure difference between inside and outside of the flow channel to adjust the pressure in the inkjet head.

Growing community of inventors

Yokohama, Japan

Junya Kawase