| Patent application number | Description | Published |
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| 20080252167 | ALTERNATING-CURRENT DYNAMOELECTRIC MACHINE - A projected shape of permanent magnets is contained within a plane of projection formed by adjacent claw-shaped magnetic poles overlapping when the claw-shaped magnetic poles are viewed in a direction of rotation of a rotor, and is generally similar in shape to a shape of the plane of projection. | 10-16-2008 |
| 20090009025 | ALTERING-CURRANT DYNAMOLECTRIC MACHINE - An alternating-current dynamoelectric machine according to the present invention includes: a stator including: a stator core in which slots that extend in an axial direction are formed on an inner side; and a stator winding that is mounted to the stator core by winding conducting wires into the slots; and a rotatable rotor including: a field winding that is disposed inside the stator; a rotor core constituted by a first pole core and a second pole core that each have claw-shaped magnetic poles that are disposed so as to cover the field winding and that alternately intermesh with each other; and first and second permanent magnets that are respectively disposed on two facing side surfaces of adjacent claw-shaped magnetic poles and that have magnetic fields that are oriented so as to reduce leakage of magnetic flux between the claw-shaped magnetic poles, and a magnetic body is disposed between a pair of the first and second permanent magnets. | 01-08-2009 |
| 20100097053 | ROTATING ELECTRIC MACHINE AND MANUFACTURING METHOD THEREFOR - There is provided a rotating electric machine including a rotation sensor unit capable of demonstrating a shielding effect over a wide frequency bandwidth and a manufacturing method therefor. In the rotating electric machine, a power unit provided with a switching element that controls an electric current that flows in a stator winding and a magnetic-field current control circuit unit provided with a switching element that controls an electric current that flows in a rotor winding are arranged on a predetermined surface of one of a pair of brackets that pivotably support a rotor shaft, and the rotation sensor unit is disposed in the vicinity of the predetermined surface of the one bracket; The rotating electric machine is characterized in such a way that there is provided a ring-shaped member that is fixed on the outer surface of the rotation sensor unit, and the ring-shaped member is configured with a non-magnetic unit having an electric conductivity and a magnetic unit. | 04-22-2010 |
| 20100231080 | ALTERNATING-CURRENT DYNAMO-ELECTRIC MACHINE - An alternating-current dynamoelectric machine according to the present invention includes: a stator including: a stator core in which slots that extend in an axial direction are formed on an inner side; and a stator winding that is mounted to the stator core by winding conducting wires into the slots; and a rotatable rotor including: a field winding that is disposed inside the stator; a rotor core constituted by a first pole core and a second pole core that each have claw-shaped magnetic poles that are disposed so as to cover the field winding and that alternately intermesh with each other; and first and second permanent magnets that are respectively disposed on two facing side surfaces of adjacent claw-shaped magnetic poles and that have magnetic fields that are oriented so as to reduce leakage of magnetic flux between the claw-shaped magnetic poles, and a magnetic body is disposed between a pair of the first and second permanent magnets. | 09-16-2010 |
| 20110101804 | CONTROLLER-INTEGRATED ELECTRIC ROTATING MACHINE - There is obtained a controller-integrated electric rotating machine that is superior in terms of a cooling effect. | 05-05-2011 |
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| 20090295063 | SHEET FEEDING DEVICE - A sheet feeding device includes a sheet support, a restricting portion, a displacement section, and a link section. The restricting portion slides along a line passing through restricting points. The restricting portion restricts the position of the sheet when the restricting portion is positioned at each of the restricting points. The link section interlinks the restricting portion and the displacement section. The position of the displacement section is detected. The link section, which interlinks the restricting section and the displacement section, is configured to change a ratio of a distance that the displacement section travels as the restricting section travels a fixed distance, wherein the ratio of the distance between those restricting points which define a relatively large spacing therebetween becomes longer than the ratio of the distance between those restricting points which define a relatively small spacing therebetween. | 12-03-2009 |
| 20100013147 | SHEET TRANSPORT APPARATUS - In a sheet transport apparatus according to one embodiment of the present invention, coiled springs | 01-21-2010 |
| 20110140346 | SHEET DETECTION APPARATUS AND IMAGE FORMING APPARATUS - According to an embodiment of the present invention, a sheet detection apparatus that detects a sheet includes an actuator unit that is rotatable around a rotational axis so as to adopt any of a protruding position in which the actuator unit protrudes into a detection area for detecting the sheet and a retracted position in which the actuator unit is retracted from the detection area, and an operation unit that is capable of switching between a retracted state in which the actuator unit is set to the retracted position and a protruding state in which the actuator unit is set to the protruding position. An image forming apparatus according to an embodiment of the present invention includes the sheet detection apparatus, and the sheet detection apparatus is provided in a main body of the image forming apparatus. | 06-16-2011 |
| 20110140350 | CONVEYING DEVICE - A conveying device includes a switching gate, a handle, and a link mechanism. The switching gate switches the direction in which a sheet of paper is conveyed along a conveying path. Normally, the weight of the switching gate keeps a front end portion of the gate engaging with a recess. A user grips the handle when he/she opens the conveying device from an apparatus. The user's grip on the handle makes the link mechanism disengage the gate portion from the recess. The link mechanism includes a protrusion protruding toward the apparatus and having a slope, which tapers off. When the conveying device closes into the apparatus, compressive contact of the protrusion slope with a wall of the apparatus disengages the gate portion from the recess. | 06-16-2011 |
| 20120018947 | IMAGE FORMING APPARATUS - An image forming apparatus ( | 01-26-2012 |
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| 20080197561 | FEEDING DEVICE AND IMAGE FORMING APPARATUS - A feeding device according to the present invention includes a box, paper holders, and a shifting mechanism. The box is open at Its top. The paper holders are open at their tops and positioned in the box. Each of the paper holders holds a pile of sheets of paper in it. The shifting mechanism so shifts at least one of the paper holders that the top sheet in one of the paper holders is positioned in a single freed position in the box according to selection data output from the apparatus with which the feeding device is used. | 08-21-2008 |
| 20080237978 | FEEDING DEVICE AND IMAGE FORMING APPARATUS - A feeding device according to the present invention holds a pile of sheets of paper in it. Feed force so acts selectively on a specified region of the upper side of the held top sheet as to feed the held sheets one after one in a feed direction. The feeding device includes a flat press plate and a support. The press plate is not smaller in the feed direction and the cross directions perpendicular to the feed direction than the maximum size of the sheets which can be held in the main body. The press plate is not larger in the feed and cross directions than the inner size of the main body. The press plate has a first opening formed over the specified region. The press plate is supported vertically movably above the held sheets by the support. | 10-02-2008 |
| 20090096153 | PAPER FEEDER, IMAGE FORMING APPARATUS PROVIDED WITH THE SAME AND PAPER FEEDING METHOD - When two or more sheets of paper P are fed in an overlapped manner to a nip where a paper feed roller and a separation roller are in pressure contact with each other, a sub-CPU of a sheet feeding unit rotates the paper feed roller in a paper feeding direction and rotates the separation roller in a direction opposite to the feeding direction, so as to separate overlapping, and thereafter, it rotates the paper feed roller and the separation roller again in the feeding direction. | 04-16-2009 |
| 20090148203 | FUSING DEVICE AND IMAGE FORMING APPARATUS USING THE SAME - To provide a fusing unit including a fusing roller for fixing an unfixed toner image to a sheet and a fusing roller cleaning unit including a web sheet delivering roller for supplying a web sheet and a winding roller for taking up the web sheet for cleaning the fusing roller, the fusing roller cleaning unit includes a web detecting terminal for detecting the presence of the web sheet and a tension roller for guiding the web sheet, on the upstream side of a pressure roller with respect to the web sheet's direction of conveyance and first and second guide rollers, the second guide roller being disposed upstream of the web detecting terminal. | 06-11-2009 |
| 20090208236 | FIXING DEVICE AND IMAGE FORMING APPARATUS - In a fixing unit, a fixing roller is rotated under driving force transmitted from a paper discharge unit-side gear of a driving section via a fixing roller driving gear, and holds and conveys a recording medium in cooperation with a pressure roller in a nip region. When a control section determines that acceleration conditions are fulfilled, the driving section increases the rotating speed of the paper discharge unit-side gear so that it is rotated at higher speed than before-acceleration speed over predetermined high-speed rotating period. | 08-20-2009 |
| 20090208261 | FIXING DEVICE AND IMAGE FORMING APPARATUS - In a fixing device, a heat roller and a fixing gear for rotating the heat roller are arranged concentrically, and coupled to each other by inserting a key formed in the fixing gear into a keyway formed in the heat roller. The keyway is designed such that the key is allowed to move along a direction in which the heat roller is rotated. For example, the keyway is formed by notching a free end of a one-side rotary shaft of the heat roller so as to extend along the direction in which the heat roller is rotated. | 08-20-2009 |
