Patents by Inventor Takuji Takahashi
Takuji Takahashi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8204431Abstract: In an image forming apparatus, when a first sheet discharger discharges a sheet bearing an image in a first direction from a proximal end to a distal end of the image forming apparatus, a post-processing device performs post-processing including at least one of stapling, punching, stamping, and sorting of the sheet discharged from the first sheet discharger. After a second sheet discharger discharges the processed sheet in a second direction opposite to the first direction in which the first sheet discharger discharges the sheet bearing the image, a sheet stacker stacks the sheet discharged from the second sheet discharger. A sheet conveyance path is provided between the first sheet discharger and the second sheet discharger. An opening is provided between the sheet stacker and an image reader so that the sheet discharged from the second sheet discharger can be retrieved from the sheet stacker in the second direction.Type: GrantFiled: September 15, 2008Date of Patent: June 19, 2012Assignee: Ricoh Company, Ltd.Inventors: Takamasa Shiraki, Takayuki Andoh, Kohji Hatayama, Yoshihide Ohta, Masato Ogawa, Tetsuya Fujioka, Takuji Takahashi, Yasunobu Youda, Kazushige Kawamura
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Patent number: 8194255Abstract: An image forming apparatus includes an apparatus body, a cover section, an image reading device including a document hold member and a document hold member cover, and a lock mechanism. When the document hold member cover is not in close contact with the document hold member, the lock mechanism prevents opening of the cover section or sliding of the image reading device.Type: GrantFiled: September 10, 2008Date of Patent: June 5, 2012Assignee: Ricoh Company, Ltd.Inventors: Takayuki Andoh, Takuji Takahashi, Takamasa Shiraki, Yoshihide Ohta, Kohji Hatayama, Kazushige Kawamura, Tetsuya Fujioka, Masato Ogawa, Taku Kudoh
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Patent number: 8154770Abstract: An image forming apparatus that includes an image reading part to read an image of an original, an image recording part to record the image read by the image reading part on a sheet, a sheet discharge part to discharge the sheet recorded by the image recording part from front to rear of a main body of the image forming apparatus, a sheet stack part to stack the sheet discharged by the sheet discharge part between the image reading part and the image recording part, first and second supporters provided outside the sheet stack part along a discharge direction of the sheet to form a space between the sheet stack part and the image reading part, and a lock mechanism to lock the image reading part. The image reading part slides relative to the first and second supporters in the discharge direction.Type: GrantFiled: January 31, 2008Date of Patent: April 10, 2012Assignee: Ricoh Company, Ltd.Inventors: Takamasa Shiraki, Takayuki Andoh, Takuji Takahashi, Yoshihide Ohta, Kohji Hatayama, Takashi Yokota
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Patent number: 8102545Abstract: An upper frame member is pivotally attached to an apparatus body so as to pivot between a closed position and an open position. The apparatus body is closed when the upper frame member is in the closed position, and the apparatus body is opened to expose an image forming unit when the upper frame member is in the open position. A locking member locks the upper frame member to the apparatus body when the upper frame member is in the closed position. An operation member positioned on a sheet stacking surface releases the locking member to unlock the upper frame member from the apparatus body.Type: GrantFiled: April 24, 2007Date of Patent: January 24, 2012Assignee: Ricoh Company, LimitedInventors: Shigeo Nanno, Takuji Takahashi, Takamasa Shiraki, Takaaki Hagihara, Takayuki Andoh, Yoshihide Ohta
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Patent number: 8103186Abstract: An image forming apparatus including an image forming section; an upper unit located over the image forming section with a space therebetween and slidable in a direction of from the front side to the rear side of the apparatus and the opposite direction; a sheet discharger configured to discharge a sheet bearing an image in the first or opposite direction; a sheet stacker receiving the sheet from the sheet discharger; a support arranged outside of both side ends of the sheet stacker in the first direction and slidably supporting the upper unit; and at least one of a release preventing member for preventing releasing of the upper unit from the support, and a covering member movable from a first position to a second position in conjunction with sliding of the upper unit and covering an opening formed at an end portion of the support when acquiring the first position.Type: GrantFiled: June 13, 2008Date of Patent: January 24, 2012Assignee: Ricoh Company, Ltd.Inventors: Takayuki Andoh, Takuji Takahashi, Takamasa Shiraki, Yoshihide Ohta, Kohji Hatayama
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Patent number: 8089666Abstract: An image forming apparatus includes an upper cover attached to a main body, an image forming part provided in the main body and configured to record an image on a sheet, an image reading part having a document press member, and a lock mechanism. The upper cover is configured to be pivotable on a support axis with respect to the main body. The image reading part is slidably mounted on the upper cover. The document press member is configured to open and close with respect to a housing of the image reading part in a direction similar to a direction in which the upper cover opens and closes. The lock mechanism is configured to prevent the document press member from opening over a slidable range of the image reading part when the upper cover is opened.Type: GrantFiled: January 23, 2008Date of Patent: January 3, 2012Assignee: Ricoh Company, Ltd.Inventors: Takayuki Andoh, Takuji Takahashi, Takamasa Shiraki, Shigeo Nanno, Yoshihide Ohta, Kohji Hatayama
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Patent number: 8032071Abstract: An image forming apparatus includes an image reading part configured to read image information on an original document, an image forming part configured to form an image on a sheet according to the image information, a sheet discharge part configured to discharge the sheet on which the image is formed from a front side to a backside of a main body, a sheet stack part onto which the sheet is discharged, and first and second supporters located outside the sheet stack part along a sheet discharge direction. The sheet stack part is located between the image reading part and the image forming part. The first and second supporters form a space between the sheet stack part and the image reading part. The second supporter is smaller than the first supporter in the sheet discharge direction.Type: GrantFiled: January 30, 2008Date of Patent: October 4, 2011Assignee: Ricoh Company, LtdInventors: Takayuki Andoh, Takuji Takahashi, Takamasa Shiraki, Yoshihide Ohta, Kohji Hatayama, Takashi Yokota
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Patent number: 7982923Abstract: An image forming apparatus that includes an image reading part, an image forming part to form an image on a sheet, a sheet discharge part to discharge the sheet from front to rear of the image forming apparatus, a sheet stack part to stack the sheet between the image reading part and the image forming part, a supporter provided outside the sheet stack part along a discharge direction of the sheet to form a space between the sheet stack part and the image reading part, a connector to electrically connect the image forming part with the image reading part, a bending unit provided between the image reading part and the supporter to bend back the connector in a sliding direction of the image reading part, and a bend limiter provided at a rear position of the image reading part in the sliding direction to limit bending of the connector.Type: GrantFiled: January 29, 2008Date of Patent: July 19, 2011Assignee: Ricoh Company, Ltd.Inventors: Takayuki Andoh, Takuji Takahashi, Takamasa Shiraki, Shigeo Nanno, Yoshihide Ohta, Kohji Hatayama
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Patent number: 7937028Abstract: Disclosed is an image forming apparatus including a toner feed unit used in a developing device and provided near a top surface of a body casing. The toner feed unit includes a frame that includes a toner container storage space portion including a curved concave portion formed of a material different from a material constituting the body casing, and has supporting surfaces, in a part of a top surface of the space, that support side portions of a device mounted on the body casing and a rear portion of the device connected to the side portions by surface contact. The frame has legs that extend from a position, which is located opposite to the device to be mounted, toward an installation surface of the body casing. The frame is built in the body casing.Type: GrantFiled: July 7, 2009Date of Patent: May 3, 2011Assignee: Ricoh Company, LimitedInventors: Masato Ogawa, Tetsuya Fujioka, Takuji Takahashi, Takamasa Shiraki, Yoshihide Ohta, Kazushige Kawamura, Kohji Hatayama
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Patent number: 7894106Abstract: A driving-force transferring unit is extended in a predetermined direction, with a predetermined portion attached to a running unit. A driving unit changes a direction of movement of the driving-force transferring unit by rotating based on a driving force from a driving source. At least one pulley unit is rotatably attached to the case and supports the driving-force transferring unit. The pulley unit includes an outer ring member that is rotated by the driving-force transferring unit, an inner ring member that rotatably supports the outer ring member, and an engaging unit that is provided on the inner ring member, to engage with the case.Type: GrantFiled: August 30, 2006Date of Patent: February 22, 2011Assignee: Ricoh Company, Ltd.Inventors: Tetsuya Fujioka, Takuji Takahashi
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Patent number: 7873303Abstract: An upper frame opening and closing mechanism, including an upper frame pivotally attached to a main body, which may include an image forming device, so as to open and close on a hinge, which receives a moment in an opening direction due to gravity when the upper frame is opened at an angle exceeding an inversion angle to expose the image forming device, an arm member, a rail member to guide a leading edge of the arm member along with opening and closing of the upper frame, a biasing member to bias the upper frame in the opening direction, and a cushion member to be pressed by the leading edge of the arm member so as to cushion the opening of the upper frame when the upper frame is opened at a maximum opening angle relative to the main body.Type: GrantFiled: January 23, 2008Date of Patent: January 18, 2011Assignee: Ricoh Company, Ltd.Inventors: Yoshihide Ohta, Takuji Takahashi, Takamasa Shiraki, Shigeo Nanno, Takayuki Andoh, Kohji Hatayama
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Patent number: 7764905Abstract: An image forming apparatus includes a first housing, a rotary shaft attached to the first housing, a second housing supported by the first housing, and first and second open-close assist members. The second housing is configured to open and close with respect to the first housing by rotating around the rotary shaft. The first and the second open-close assist members are directly attached to the first housing and the second housing and configured to assist opening and closing the second housing. The first and the second open-close assist members share assistance in opening and closing the second housing.Type: GrantFiled: December 3, 2007Date of Patent: July 27, 2010Assignee: Ricoh, Company, Ltd.Inventors: Yoshihide Ohta, Shigeo Nanno, Toshikane Nishii, Takuji Takahashi, Takamasa Shiraki, Takaaki Hagihara, Takayuki Andoh
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Patent number: 7751751Abstract: In an image forming apparatus, an upper unit rotates about a first shaft provided in an image forming device for forming an image on a sheet with respect to the image forming device. A slide portion is provided on the upper unit to slide in a forward direction toward a side of the image forming device in which the first shaft is provided and a backward direction opposite to the forward direction. The forward direction and the backward direction are perpendicular to an axial direction of the first shaft. A force applier applies a force to the upper unit in an open direction in which the upper unit is opened with respect to the image forming device. A force adjuster decreases the force applied by the force applier to the upper unit as the slide portion slides with respect to the upper unit in the forward direction.Type: GrantFiled: July 17, 2008Date of Patent: July 6, 2010Assignee: Ricoh Company, Ltd.Inventors: Yoshihide Ohta, Takuji Takahashi, Takamasa Shiraki, Takayuki Andoh, Shigeo Nanno
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Patent number: 7752349Abstract: The DMA data transfer apparatus includes a memory, a communication controller, a DMA controller having a plurality of DMA engines each of which transfers data by DMA to the communication controller from the memory, and a DMA control unit. The DMA control unit determines a division size of transfer data such that the DMA engine can transfer the data, issues a data transfer directive by the DMA to the DMA controller, and controls data transfer by the DMA. The DMA control unit transmits the determination information for determination of the termination of data transfer to the communication controller. The communication controller determines the termination of data transfer based on the determination information transmitted from the DMA control unit.Type: GrantFiled: May 26, 2006Date of Patent: July 6, 2010Assignee: Fujitsu LimitedInventors: Kensuke Ishida, Masaaki Nagatsuka, Hiroyuki Oka, Takuji Takahashi
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Publication number: 20100021211Abstract: Disclosed is an image forming apparatus including a toner feed unit used in a developing device and provided near a top surface of a body casing. The toner feed unit includes a frame that includes a toner container storage space portion including a curved concave portion formed of a material different from a material constituting the body casing, and has supporting surfaces, in a part of a top surface of the space, that support side portions of a device mounted on the body casing and a rear portion of the device connected to the side portions by surface contact. The frame has legs that extend from a position, which is located opposite to the device to be mounted, toward an installation surface of the body casing. The frame is built in the body casing.Type: ApplicationFiled: July 7, 2009Publication date: January 28, 2010Inventors: Masato Ogawa, Tetsuya Fujioka, Takuji Takahashi, Takamasa Shiraki, Yoshihide Ohta, Kazushige Kawamura, Kohji Hatayama
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Publication number: 20100014129Abstract: An image forming apparatus includes an apparatus casing installing an image formation section, an upper cover member that swingably covers and uncovers the apparatus casing, and an image reading unit supported by the apparatus casing via the upper cover member. A lock device is provided to maintain the upper cover member in a closed state. A unlock device is provided to unlock the lock device. A unlock operation section is displaced by an operator and activates the unlock device to operate when the lock device is unlocked.Type: ApplicationFiled: July 16, 2009Publication date: January 21, 2010Inventors: Takayuki Andoh, Takuji Takahashi
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Patent number: 7623813Abstract: A drive shaft, which is driven by a drive motor, is held firmly at two points by bearing structures. The bearing structure has a hole in which a bearing member is fit. The bearing member has hole, which is concentric with respect to the hole in which the bearing member is fit. A crimp, which is made of elastic material, having interfering portions that interfere with the bearing member is provided between the bearing member and the hole in the bearing structure in which the bearing member is fit.Type: GrantFiled: December 16, 2004Date of Patent: November 24, 2009Assignee: Ricoh Company, Ltd.Inventors: Takuji Takahashi, Yoshiaki Nagao, Sachiko Nishikino
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Publication number: 20090162082Abstract: An image forming apparatus includes an image forming unit, a first sheet stack portion, a sheet output section, and a post processing unit. The image forming unit forms an image on a sheet. The first sheet stack portion is provided at an upper face of the image forming unit. The sheet output section outputs the sheet on which the image is formed by the image forming unit from one side of the image forming apparatus to the first sheet stack portion. The post processing unit is provided adjacent to a lateral side of the image forming unit at an upstream side of the sheet output section to execute post processing on the sheet. A sheet subjected to post-processing by the post-processing unit is output to the first sheet stack portion from the same direction as a sheet not subjected to post-processing by the post-processing unit.Type: ApplicationFiled: December 23, 2008Publication date: June 25, 2009Inventors: Takamasa Shiraki, Kazushige Kawamura, Yoshihide Ohta, Takayuki Andoh, Masato Ogawa, Takuji Takahashi, Tetsuya Fujioka, Yasunobu Youda, Kohji Hatayama
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Publication number: 20090122330Abstract: An image forming apparatus includes an apparatus body, a cover section, an image reading device including a document hold member and a document hold member cover, and a lock mechanism. When the document hold member cover is not in close contact with the document hold member, the lock mechanism prevents opening of the cover section or sliding of the image reading device.Type: ApplicationFiled: September 10, 2008Publication date: May 14, 2009Inventors: Takayuki Andoh, Takuji Takahashi, Takamasa Shiraki, Yoshihide Ohta, Kohji Hatayama, Kazushige Kawamura, Tetsuya Fujioka, Masato Ogawa, Taku Kudoh
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Patent number: 7509482Abstract: A memory device stores entries waiting to be processed. Row numbers of matrix information correspond to storage positions within the memory device, column numbers correspond to positions within the order of the entries, and every matrix element corresponding to the storage position and the position within the order of the entry stored in this storage position has a predetermined value. An operation between the first vector information indicating storage positions of processable entries and each column of the matrix information is performed and the second vector information indicating positions within the order of the processable entries is generated. Then, a position to be processed is selected from among the positions of processable entries indicated by the second vector information, an element having the predetermined value in the column corresponding to the selected position is obtained, and an entry in the storage position corresponding to the element is processed.Type: GrantFiled: June 16, 2006Date of Patent: March 24, 2009Assignee: Fujitsu LimitedInventors: Takuji Takahashi, Masahiro Kuramoto