Junichi Hashimoto
Junichi Hashimoto, Toyohashi JP
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20110064462 | BEARING DEVICE, DRUM UNIT, AND IMAGE FORMING APPARATUS - A bearing device to hold a rotor in an opening formed in a frame is provided. Circumference of the opening is formed to have a first edge and a second edge, which linearly extend along different directions from each other. The bearing device includes a flange member to be attached to an axial end portion of the rotor, a bearing member to be externally attached to the flange member and inserted in the opening, and a presser member to press the flange member toward a section between the first edge and the second edge. | 03-17-2011 |
20120219322 | BEARING DEVICE, DRUM UNIT, AND IMAGE FORMING APPARATUS - A bearing device to hold a rotor in an opening formed in a frame is provided. Circumference of the opening is formed to have a first edge and a second edge, which linearly extend along different directions from each other. The bearing device includes a flange member to be attached to an axial end portion of the rotor, a bearing member to be externally attached to the flange member and inserted in the opening, and a presser member to press the flange member toward a section between the first edge and the second edge. | 08-30-2012 |
Junichi Hashimoto, Mie-Ken JP
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20110031630 | SEMICONDUCTOR DEVICE MANUFACTURING METHOD AND SEMICONDUCTOR DEVICE - A semiconductor device manufacturing method includes: stacking a plurality of electrode layers containing a semiconductor alternately with insulating layers; processing part of a multilayer body of the electrode layers and the insulating layers into a staircase shape and exposing a surface of the staircase-shaped electrode layers; forming a metal film in contact with the exposed electrode layers; reacting the semiconductor of the electrode layers with the metal film to form a metal compound in at least a portion of the electrode layers in contact with the metal film; removing an unreacted portion of the metal film; forming an interlayer insulating layer covering the staircase-shaped electrode layers after removing the unreacted portion of the metal film; forming a plurality of contact holes piercing the interlayer insulating layer, each of the contact holes reaching the metal compound of the electrode layer at a corresponding stage; and providing a plurality of contact electrodes inside the contact holes. | 02-10-2011 |
Junichi Hashimoto, Ebina-Shi JP
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20100086243 | Package Bag And Spout Member - A spout member including a base portion which is fixed to a bag body, a cylindrical portion which protrudes upward from the base portion, and a sealing portion which seals a front end of the cylindrical portion through a breakable thin portion is disposed between two sheets of film forming the bag body. A sealing chamber accommodating the cylindrical portion and the sealing portion is opened by tearing the two sheets of film along an opening assisting line. An opening assisting plate protruding to at least one of a left side and a right side of the sealing portion is disposed above the opening assisting line. A sandwiching reinforcement seal portion for reinforcing the two sheets of film by sealing inner surfaces thereof is provided between the opening assisting plate and the opening assisting line. | 04-08-2010 |
Junichi Hashimoto, Chigasaki JP
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20110222188 | PERPENDICULAR RECORDING MAGNETIC HEAD, MANUFACTURING METHOD THEREOF AND MAGNETIC DISK DRIVE - The reduction in a recording magnetic field due to the narrowing of recording track width along with the improved surface recording density is prevented and the increasing of accuracy in the track width is achieved, enabling an improvement in recording performance. In a perpendicular magnetic recording head, a main pole | 09-15-2011 |
Junichi Hashimoto, Wako JP
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20130009585 | CONTROL APPARATUS FOR SWITCHING CIRCUIT - A control apparatus for a switching circuit includes a controller, a target-rotational-speed acquiring device, a target-torque acquiring device, and an ON-time varying device. The controller is configured to turn on a bidirectional conduction switching device provided parallel to a reverse conducting device through which a commutation current flows. The target-rotational-speed acquiring device is configured to acquire a target rotational speed of an alternating current motor. The target-torque acquiring device is configured to acquire a target torque of the alternating current motor. The ON-time varying device is configured to vary, on a basis of the target rotational speed and the target torque, an ON time period during which the bidirectional conduction switching device provided parallel to the reverse conducting device through which a commutation current flows is turned on. | 01-10-2013 |
Junichi Hashimoto, Utsunomiya-Shi JP
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20130088096 | SHORT-CIRCUIT PROTECTION METHOD - A short-circuit protection method for a circuit having a plurality of power switching elements, includes, when a short-circuit of a first power switching element is detected by detection device that detects a short-circuit of the plurality of power switching elements, performing a cut-off process of cutting off a gate of a second power switching element through which a short-circuit current caused by the short-circuit of the first power switching element flows, and changing a resistance value of a gate resistor of the second power switching element while the cut-off process is performed. | 04-11-2013 |
Junichi Hashimoto, Chigasaki-San JP
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20130242431 | MAGNETIC RECORDING HEAD WITH NON-CONFORMAL SIDE SHIELD GAP - A magnetic write head having a shield structure that provides both a leading shield and side shielding function. The magnetic shield is separated from the sides and leading edge of the write pole by a non-magnetic gap layer that has a non-uniform thickness. The non-magnetic gap layer is thicker near the leading edge and thinner at the trailing edge. This allows for increased side field gradient near the trailing edge of the write pole and decreased write field loss at the leading edge of the write pole. | 09-19-2013 |
Junichi Hashimoto, Kyoto JP
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20130201812 | SPINDLE MOTOR AND DISK DRIVE APPARATUS - A spindle motor includes a flat stator, a rotor magnet arranged above the stator, and a magnetic portion made of a ferromagnetic material. The magnetic portion is positioned lower than the stator and the magnetic portion are axially overlapped with coils. A magnetic attraction force is generated between the magnetic portion and the rotor magnet. Since the magnetic portion is positioned lower than the stator, it is possible to cause magnetic fluxes to efficiently flow between the rotor magnet and the stator. Further, the stator includes a protrusion protruded radially outward beyond an outer circumferential portion of a rotor hub. Accordingly, in a plan view, the stator is positioned radially outward of the rotor hub. | 08-08-2013 |
20130257229 | BRUSHLESS MOTOR, DISK DRIVE APPARATUS AND BRUSHLESS MOTOR MANUFACTURING METHOD - A brushless motor includes a plate-shaped armature and a magnet facing either one of a top surface and a bottom surface of the armature. An inner peripheral surface of a base member and an outer peripheral surface of a bearing mechanism contact with each other or face each other in a diametrical direction with an adhesive therebetween in a first fixing part. Further, a rotor yoke and a hub protrusion contact with each other or face each other in a diametrical direction with an adhesive therebetween in a second fixing part. Then, a press-fitting or adhesion is carried out in the other of the first and the second fixing part. | 10-03-2013 |
20130258522 | BRUSHLESS MOTOR, DISK DRIVE APPARATUS, AND METHOD OF MANUFACTURING THE BRUSHLESS MOTOR - A stationary unit of a brushless motor includes a flat armature and a base member arranged to support the armature. The armature includes a power supply portion to which a lead wire is connected. The base member includes a wall portion and a window portion. The wall portion is radially opposed to an outer edge portion of the armature. The window portion is positioned below the power supply portion to axially extend through the base member. An adhesive agent exists between the wall portion and the outer edge portion of the armature. Accordingly, the base member and the armature are strongly fixed to each other. Further, a sealing material is interposed between a whole periphery of an edge of the window portion and the armature, so that the window portion is sealed. (FIG. | 10-03-2013 |
20130313935 | BRUSHLESS MOTOR AND DISK DRIVE APPARATUS - A brushless motor includes a stationary unit and a rotary unit rotatably supported with respect to the stationary unit. The stationary unit includes an armature and a base member arranged to support the armature. The rotary unit includes a magnet, a hub made of a magnetic material and a rotor yoke made of a magnetic material. The armature includes a plurality of coil patterns arranged along a circumferential direction. The hub includes an inner lower surface, an outer lower surface and a recess portion. The recess portion is arranged between the inner lower surface and the outer lower surface and depressed upward. At least a portion of the magnet is accommodated within the recess portion. At least one of the inner lower surface and the outer lower surface is positioned above a lower surface of the magnet. | 11-28-2013 |
20140183987 | SPINDLE MOTOR AND MOTOR UNIT - A motor unit includes a rotating portion and a stationary portion. The rotating portion includes a shaft, a rotor hub, and a rotor magnet. The rotor hub includes a top plate portion and a cylindrical portion. The stationary portion includes a sleeve and an armature. The armature is arranged radially opposite the rotor magnet. A lubricating fluid is arranged between an outer circumferential surface of the shaft and an inner circumferential surface of the sleeve with at least one of the outer circumferential surface of the shaft and the inner circumferential surface of the sleeve including an upper radial dynamic pressure groove array and a lower radial dynamic pressure groove array. An axial position of a center of gravity of the rotating portion is arranged above an axial position of the lower radial dynamic pressure groove array. | 07-03-2014 |
Junichi Hashimoto, Chigasaki-Shi JP
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20150318668 | QUANTUM CASCADE LASER AND METHOD FOR MANUFACTURING QUANTUM CASCADE LASER - A quantum cascade laser includes a substrate having first and second regions; a stacked semiconductor layer disposed on the second region, the stacked semiconductor layer including an active layer, the stacked semiconductor layer having a first end facet and a second end facet that constitute a laser cavity; an insulating layer disposed on the first end facet and an upper surface of the stacked semiconductor layer, the insulating layer having an opening on the upper surface; a conductive layer disposed on the insulating layer and in the opening, the conductive layer being in contact with the upper surface through the opening; and a metal layer disposed on the conductive layer on the first end facet and an upper surface. The first end facet of the stacked semiconductor layer is retreated from an end facet of the substrate to a boundary between the first and second regions. | 11-05-2015 |
Junichi Hashimoto, Yokkaichi JP
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20150372007 | METHOD FOR MANUFACTURING SEMICONDUCTOR MEMORY DEVICE - According to one embodiment, a method for manufacturing a semiconductor memory device includes forming a stacked body including a plurality of first layers and a plurality of second layers on a substrate. The method includes forming a first slit and a second slit simultaneously by dry-etching the stacked body. The first slit causes a part of the stacked body to have a comb-shaped pattern including a plurality of line parts isolated in a first direction and extending in a second direction. The second slit surrounds the comb-shaped pattern with a closed pattern. The method includes forming a hole in the line parts of the stacked body. The method includes forming a charge storage film and a semiconductor body in the hole. | 12-24-2015 |