Inventors list |
Assignees list |
Classification tree browser |
Top 100 Inventors |
Top 100 Assignees |
Hamakawa, JP
Hiroshi Hamakawa, Nagano-Ken JP
| Patent application number | Description | Published |
|---|---|---|
| 20090135216 | Liquid ejection apparatus - A liquid ejection apparatus for discharging a medium on which liquid is ejected by a discharge roller after ejecting liquid on the medium by a liquid ejection head includes a medium pressing roller for controlling floatation of the medium between the liquid ejection head and the discharge roller, the medium pressing roller being provided on a rotatable discharge frame, wherein the liquid ejection apparatus operates by switching between a first mode where the medium pressing roller moves to an upper position by rotation of the discharge frame and a second mode where the medium pressing roller moves to a lower position than the first mode to press the medium downward. | 05-28-2009 |
Hiroyuki Hamakawa, Shiki-Gun JP
| Patent application number | Description | Published |
|---|---|---|
| 20090180818 | DEVELOPING UNIT AND IMAGE FORMING DEVICE - A developing unit includes a developing roller which rotates about a rotational axis to supply toner to a photoreceptor, the developing roller including: a cylindrical core portion which includes an electric conductor; a first resistive layer which covers a cylindrical surface of the core portion; a second resistive layer which covers the first resistive layer, and has electric-resistivity lower than that of the first resistive layer; and a current leakage control member which prevents leakage of electric current from the core portion toward the second resistive layer through an end of the developing roller along a direction of the rotational axis. | 07-16-2009 |
Hiroyuki Hamakawa, Osaka JP
| Patent application number | Description | Published |
|---|---|---|
| 20080310885 | Developing device and image forming apparatus using same - The surface of a developing roller is coated with a phenol resin layer at a higher level in triboelectric series than a toner. A positively charged toner supplied from a magnetic roller onto the developing roller is negatively charged by friction with the phenol resin layer at the higher level in the triboelectric series. As a result, the positive charge of the toner is cancelled out, and the charge amount of toner per unit weight on the developing roller (Q/M)s decreases. Applying this principle, relationship between (Q/M)s and the charge amount of toner per unit weight on the magnetic roller (Q/M)m satisfies (Q/M)s<(Q/M)m. | 12-18-2008 |
| 20090311012 | DEVELOPING DEVICE AND IMAGE-FORMING APPARATUS - This invention relates to a developing device | 12-17-2009 |
| 20110150537 | DEVELOPING DEVICE AND IMAGE FORMING APPARATUS PROVIDED THEREWITH - Provided is a developing device including: a developing container including a developer replenishing port from which the developer is replenished, and a developer discharge port which is provided on a downstream side of one of the conveyance paths and from which surplus developer is discharged; and a discharge regulating portion provided to one of the plurality of stirring members which is arranged in the one of the conveyance paths, in which the discharge regulating portion includes a regulating member arranged so as to face the developer discharge port, for regulating movement of the developer to the developer discharge port side, and a decelerating conveyance member arranged between the helical blade and the regulating member, for partially reducing a conveying speed of the developer in the one of the conveyance paths. | 06-23-2011 |
Hiroyuki Hamakawa, Osaka-Shi JP
| Patent application number | Description | Published |
|---|---|---|
| 20090154962 | DEVELOPING DEVICE AND IMAGE FORMING APPARATUS - A developing device visualizing an electrostatic latent image previously formed on the surface of an image carrier as toner image, comprising: a developing roller placed at a position facing the image carrier, carrying a toner on the surface thereof, conveying the toner and flying the conveyed toner onto the surface of the image carrier; and a resin layer coated on the surface of the developing roller, wherein the absolute value of the difference in charge between the toners in the upper and lower layers of the toner layer formed on the developing roller as the toner carried on the developing roller is 6 μC/g or less. | 06-18-2009 |
| 20090185831 | DEVELOPING DEVICE AND IMAGE FORMING APPARATUS - A developing device is provided with a developing roller arranged to face a photoconductor for forming an electrostatic latent image and adapted to supply a toner to the photoconductor, an agitating member for agitating a developer, a supply roller that holds the developer agitated by the agitating member, and supplies the toner to an area facing the developing roller; a restricting member for blocking the developer supplied onto the supply roller and restricting the amount of the developer conveyed by the supply roller, and an intermediate roller including a first magnetic pole facing in a direction toward the staying developer by being restricted by the restricting member for attracting the staying developer and arranged at such a position as to face the developer blocked by the restricting member. Thus, the developing device can avoid image quality deterioration even when a developing process continues over a long period of time. | 07-23-2009 |
Keita Hamakawa, Minami-Ku JP
| Patent application number | Description | Published |
|---|---|---|
| 20090174272 | MOTOR AND DISK DRIVE USING THE SAME - A thrust yoke is fixed into a second recessed portion of a base with adhesive. The second recessed portion has a first surface to be in contact with the bottom surface of the thrust yoke, and a second surface axially opposing the bottom surface of the thrust yoke with a gap therebetween. The thrust yoke has a bent portion at its radial end. The bent portion is bent downward. The thrust yoke also has a protruding portion extending downward from the bent portion. The protruding portion axially opposes the second surface of the second recessed portion of the base with a gap therebetween. | 07-09-2009 |
Keita Hamakawa, Kyoto JP
| Patent application number | Description | Published |
|---|---|---|
| 20080278850 | MOTOR - When a sleeve of a fluid dynamic bearing is manufactured, its inner peripheral surface is formed by cutting. On the inner peripheral surface, first and second inclined surfaces are formed by a first cutting process such that a distance between the sleeve and a central axis is increased toward an upper end surface of the sleeve. Then, an upper bearing surface and a third inclined surface between the upper bearing surface and the first inclined surface are formed on the inner peripheral surface of the sleeve by a second cutting process of accuracy higher than that of the first cutting process. In the second cutting process, it is possible to form accurately in position a boundary between the upper bearing surface and the third inclined surface in contact with an upper end of an upper dynamic pressure groove provided on the upper bearing surface. | 11-13-2008 |
| 20110122529 | SPINDLE MOTOR, DISK DRIVE APPARATUS AND METHOD FOR MANUFACTURING THE SPINDLE MOTOR - A hub includes first and second side surfaces respectively opposed to inner and outer circumferential surfaces of an upper portion of a magnetic member, and a ceiling surface arranged to interconnect an upper ends of the first and second side surfaces. The adhesive agent is interposed between the inner circumferential surface of the upper portion of the magnetic member and the first side surface of the hub and between the upper surface of the magnetic member and the ceiling surface of the hub. Radial distance between the inner circumferential surface of the upper portion of the magnetic member and the first side surface of the hub and axial distance between the upper surface of the magnetic member and the ceiling surface of the hub are smaller than radial distance between the outer circumferential surface of the upper portion of the magnetic member and the second side surface of the hub. | 05-26-2011 |
Masayuki Hamakawa, Kawasaki JP
| Patent application number | Description | Published |
|---|---|---|
| 20090238952 | METHOD OF MANUFACTURING SLIDER - The method of manufacturing a head slider is capable of improving a floating characteristic and an electromagnetic conversion characteristic of the head slider. The method comprises the steps of: forming terminals on a leading end face of a row bar; forming a resist pattern, which corresponds to a configuration of an air bearing surface section to be formed on a facing surface of the row bar; partially thinning the facing surface of the row bar until reaching a groove surface so as to form the air bearing surface section; forming a base layer of a step section on the groove surface; forming a heater circuit, which is electrically connected to the terminals, on the base layer; and coating the base layer, on which the heater circuit has been formed, with a thermal expansion material layer so as to form the step section. | 09-24-2009 |
Nozomu Hamakawa, Tokyo JP
| Patent application number | Description | Published |
|---|---|---|
| 20100113451 | NOVEL PREVENTIVE AND/OR THERAPEUTIC AGENT FOR DIABETIC NEUROPATHY - The present invention relates to an agent for preventing and/or treating diabetic neuropathy comprising a 2-[(substituted-inden-7-yloxy)methyl]morpholine of the formula (I) or a pharmaceutically acceptable salt thereof as an active ingredient. The invention is useful for providing an excellent agent for preventing and/or treating diabetic neuropathy, and particularly useful for providing an agent for preventing and/or treating diabetic motor neuropathy (such as muscle weakness disorder (such as muscle weakness disorder with inability to walk independently)), diabetic sensory neuropathy (such as paresthesia (such as vibration perception abnormality), allodynia, hypoesthesia (such as numbness of extremities or cold sensation), or pain), or diabetic autonomic neuropathy (such as stool abnormality (such as constipation or diarrhea), urination disorder, impotence, orthostatic hypotension, sudomotor dysfunction, abnormal heart rate variability, or delayed gastric emptying). Further, the invention is particularly useful for providing an agent for improving pathophysiology of diabetic neuropathy. | 05-06-2010 |
Shigeomi Hamakawa, Aichi-Ken JP
| Patent application number | Description | Published |
|---|---|---|
| 20110215272 | EXHAUST VALVE STRUCTURE - An exhaust valve structure includes: an inner cylindrical portion that forms an introducing passage of exhaust gas and that has a stay member; a valve element that closes or opens the introducing passage; and a wire mesh that is fixed to the stay member and that contacts the valve element when the introducing passage is closed. The wire mesh is formed in a shape such that a diameter of the wire mesh gradually increases toward a downstream side of the introducing passage and a load exerted on the stay member when the valve element contacts the wire mesh is distributed in a diameter-increasing direction in which the diameter of the wire mesh increases. | 09-08-2011 |
Takeru Hamakawa, Wako-Shi JP
| Patent application number | Description | Published |
|---|---|---|
| 20100065006 | PULSER PLATE MOUNTING STRUCTURE - A pulser plate mounting structure is provided in which a key groove ( | 03-18-2010 |
| 20110114041 | COOLING STRUCTURE FOR INTERNAL COMBUSTION ENGINE - A spacer fitted inside a water jacket of a cylinder block in an internal combustion engine is set so that a space formed between an inner peripheral surface of the spacer and an inner wall surface of the water jacket is smaller than a space formed between an outer peripheral surface of the spacer and an outer wall surface of the water jacket. Accordingly, even if a position of the spacer is shifted in a radial direction, the inner peripheral surface of the spacer comes into abutment on the inner wall surface of the water jacket at first. Thereby, the abutment of the outer peripheral surface of the spacer on the outer wall surface of the water jacket is prevented completely. Therefore, hitting sounds of pistons can be blocked by the space between the outer peripheral surface of the spacer and the outer wall surface of the water jacket. | 05-19-2011 |
| 20110114042 | COOLING STRUCTURE FOR INTERNAL COMBUSTION ENGINE - A spacer covers intermediate portions of respective cylinder bores in a depth direction of a water jacket throughout the entire peripheries of the intermediate portions in the peripheral direction. Accordingly, the intermediate portion of each cylinder bore becomes higher in temperature than any other portion, and is thermally expanded. Thereby, the clearance between the cylinder bore and the corresponding piston increases. Thus, the friction decreases to improve fuel efficiency of an internal combustion engine. Furthermore, since the temperature of oil lubricating the intermediate portion of the cylinder bore rises, and the viscosity decreases. Accordingly, the effect of friction reduction is enhanced more. Furthermore, upper and lower portions of the cylinder bores in a cylinder axis direction are sufficiently cooled. Therefore, the cooling performance of a top part and a skirt part of each piston, which tends to become higher in temperature, is secured. Accordingly, overheat can be prevented. | 05-19-2011 |
| 20110114043 | COOLING STRUCTURE FOR INTERNAL COMBUSTION ENGINE - A height of a spacer which is arranged inside a water jacket formed to surround peripheries of cylinder bores of a cylinder block of an internal combustion engine is made to be lower by a step in an intermediate portion thereof in a cylinder row line direction. Consequently, among end-portion cylinder bores having a lower temperature and being situated at opposite end portions in the cylinder row line direction and intermediate cylinder bores being other than the end-portion cylinder bores and having a higher temperature, a cooling performance of the intermediate cylinder bores is higher than that of the end-portion cylinder bores. Therefore, all the temperatures of the respective cylinder bores can be made uniform. A similar operation effect can be obtained alternatively by making a thickness of the spacer thinner in portions facing the intermediate cylinder bores and thicker in portions facing the end-portion cylinder bores. | 05-19-2011 |
| 20110132295 | COOLING STRUCTURE FOR INTERNAL COMBUSTION ENGINE - A spacer arranged inside a water jacket which is formed to surround peripheries of cylinder bores in a cylinder block of an internal combustion engine includes support legs extending in an up-and-down direction from a spacer main body part which partitions the water jacket into an upper and lower cooling water passages. The support legs are disposed in opposite end portions in a cylinder row line direction, where the temperatures of the cylinder bores tend to be lower. Accordingly, even if the flow of cooling water is more or less inhibited by the support legs and the cooling effect deteriorates, it is possible to prevent the temperatures of the respective cylinder bores from becoming different by suppressing the influence to a minimum. | 06-09-2011 |
Takeshi Hamakawa, Kusatsu-Shi JP
| Patent application number | Description | Published |
|---|---|---|
| 20100058123 | ELECTRONIC DEVICE AND ERROR MANAGEMENT SYSTEM - An electronic device including: a memory unit in which a plurality of error information is stored; and a control unit selecting from among the plurality of error information, an error information such that at least one of a type and a frequency of the error that occurred satisfies/satisfy a predetermined condition, the control unit also making the memory unit save the error information. | 03-04-2010 |
Tetsuya Hamakawa, Toshima-Ku JP
| Patent application number | Description | Published |
|---|---|---|
| 20100000955 | Girder block lifting method and jack-up stage used therefor - A girder block lifting method, which can solve a problem that steel beams are inclined or fallen inward by lifting a heavy material, and a jack-up stage used therefor are provided. The method includes a main beam which can be provided between steel beams being targets of connection with the girder to construct a rigid frame structure, a height adjustment means (gate-shaped base) mounted on a cross beam member being parallel to the main beam and connecting other steel frames for adjusting height to the main beam, a connection beam for alternately connecting the main beam and the height adjustment means (gate-shaped base), and an auxiliary beam for connecting the connection beams. On a frame stage formed by connecting these beams, a plurality of lifting jacks are provided and a lifting sling is hung from upper part of the steel beam to enable jack-up of the girder block. | 01-07-2010 |
Yohei Hamakawa, Fussa-Shi JP
| Patent application number | Description | Published |
|---|---|---|
| 20100220239 | INTERPOLATION FRAME GENERATION APPARATUS, INTERPOLATION FRAME GENERATION METHOD, AND BROADCAST RECEIVING APPARATUS - According to one embodiment, an interpolation frame generation apparatus according to one embodiment, which generates an interpolation frame image to be inserted between continuous frame images, includes a block specific detector configured to execute block matching processing in one of blocks included in the continuous frame images and determine a block specific motion vector, a pixel specific detector configured to, for each pixel of a block of interest of the blocks, define, as a candidate vector, a motion vector most frequently applied among pixel specific motion vectors already determined in a block adjacent to the block of interest and execute matching processing between the candidate vector and each pixel of the block of interest, thereby detecting a pixel specific motion vector, and a generator configured to generate an interpolation frame image based on the block specific motion vector and the pixel specific motion vector. | 09-02-2010 |
| 20100245674 | INTERPOLATION FRAME GENERATION APPARATUS, INTERPOLATION FRAME GENERATION METHOD, AND BROADCAST RECEIVING APPARATUS - According to one embodiment, an interpolation frame generation apparatus generates an interpolation frame image to be inserted between continuous frame images. The interpolation frame generation apparatus includes a motion vector detection module and a generation module. The motion vector detection module is configured to execute block matching processing in each of a plurality of blocks included in the continuous frame images and specify one motion vector on an interpolation frame. The generation module is configured to, for an interpolation block in which the motion vector detection module specifies one motion vector, generate an interpolation frame image based on the motion vector, and for an interpolation block in which the motion vector detection module does not specify one motion vector, generate an interpolation frame image based on the frame image containing no motion vector component. | 09-30-2010 |