Patents by Inventor Yoshihide Ohta
Yoshihide Ohta 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: 8045888Abstract: A conveying device conveys a sheet of non-blank recording medium recorded with an image formed in an image forming unit, and includes a container that is detachable and contains a sheet of blank recording medium, a feeding unit that feeds the blank recording medium from the container, and a recirculating path that leads the non-blank recording medium to the feeding unit. The recirculating path is disposed lateral to the image forming unit. A part of the recirculating path is integrated into the container and forms a reversing path that leads to the feeding unit. At least one of surfaces of the reversing path can be exposed.Type: GrantFiled: December 12, 2006Date of Patent: October 25, 2011Assignee: Ricoh Company, Ltd.Inventors: Shigeo Nanno, Hiroshi Fujiwara, Yasuhide Ohkubo, Ippei Kimura, Yoshihide Ohta, Tomoyoshi Yamazaki, Masafumi Takahira
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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: 7963524Abstract: An image forming apparatus to form an image on a sheet of recording media includes a discharge port formed in an upper portion of a main body of the image forming apparatus and exposed from above, a discharge portion to which the sheet is discharged, disposed downstream from the discharge port in a direction in which a sheet is discharged, a discharge roller disposed at the discharge port, a facing member disposed facing the discharge roller, forming a discharge nip together with the discharge roller, and a rotatable sheet discharge member. The sheet discharge member is provided in the discharge portion to form a sloped portion continuous with a downstream side of the discharge port in the direction in which the sheet is discharged. Rotation of the sheet discharge member causes a position of the discharge nip to change.Type: GrantFiled: August 31, 2009Date of Patent: June 21, 2011Assignee: Ricoh Company, Ltd.Inventor: Yoshihide Ohta
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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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Publication number: 20110026961Abstract: A fixing device for fixing an unfixed toner image on a recording medium includes a rotatable fixing member heated by a heater to contact the recording medium bearing the unfixed toner image while rotating, with the heater disposed inside a hollow of the fixing member and turned on and off intermittently at a start of a fixing process to heat the fixing member intermittently, a first pressing member disposed opposite the fixing member to press against and rotate the fixing member to define a fixing nip through which the recording medium passes to fix the unfixed toner image with heat and pressure, and a temperature detector to detect a change in the temperature of the fixing member when the heater turns on and off intermittently. When the temperature detector detects the change in the temperature of the fixing device, the heater is turned on continuously.Type: ApplicationFiled: July 16, 2010Publication date: February 3, 2011Inventors: Yoshihide OHTA, Kazunori Bannai, Kohta Takenaka, Hidehiko Fujiwara
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Patent number: 7878725Abstract: An image forming apparatus is disclosed. The image forming apparatus includes an apparatus main body, a first unit to be attached inside the apparatus main body, a rotatable part attached to the apparatus main body and rotatable between an open position for opening the apparatus main body and a closed position for closing the apparatus main body, and a second unit removably attached to the rotatable part. When the rotatable part is rotated from the closed position to the open position, the first unit is allowed to be attached to or removed from the apparatus main body by being moved horizontally. By removing the second unit from the rotatable part, the first unit is attached to or removed from the apparatus main body without coming into contact with the second unit.Type: GrantFiled: June 12, 2007Date of Patent: February 1, 2011Assignee: Ricoh Company, Ltd.Inventors: Yasuhide Ohkubo, Hiroshi Fujiwara, Shigeo Nanno, Ippei Kimura, Yoshihide Ohta, Tomoyoshi Yamazaki, Masafumi Takahira, Haruyuki Honda
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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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Publication number: 20100276874Abstract: An adjusting member is positioned in a sheet feeding opening. The adjusting member is adjusted according to the size of the paper sheet. The adjusting member does not jut out of an exterior surface of an apparatus body.Type: ApplicationFiled: July 14, 2010Publication date: November 4, 2010Inventors: Shigeo Nanno, Yasuhide Ohkubo, Ippei Kimura, Yoshihide Ohta, Tomoyoshi Yamazaki, Haruyuki Honda
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Patent number: 7784780Abstract: An adjusting member is positioned in a sheet feeding opening. The adjusting member is adjusted according to the size of the paper sheet. The adjusting member does not jut out of an exterior surface of an apparatus body.Type: GrantFiled: May 10, 2007Date of Patent: August 31, 2010Assignee: Ricoh Company, LimitedInventors: Shigeo Nanno, Yasuhide Ohkubo, Ippei Kimura, Yoshihide Ohta, Tomoyoshi Yamazaki, Haruyuki Honda
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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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Publication number: 20100052252Abstract: An image forming apparatus to form an image on a sheet of recording media includes a discharge port formed in an upper portion of a main body of the image forming apparatus and exposed from above, a discharge portion to which the sheet is discharged, disposed downstream from the discharge port in a direction in which a sheet is discharged, a discharge roller disposed at the discharge port, a facing member disposed facing the discharge roller, forming a discharge nip together with the discharge roller, and a rotatable sheet discharge member. The sheet discharge member is provided in the discharge portion to form a sloped portion continuous with a downstream side of the discharge port in the direction in which the sheet is discharged. Rotation of the sheet discharge member causes a position of the discharge nip to change.Type: ApplicationFiled: August 31, 2009Publication date: March 4, 2010Inventor: Yoshihide Ohta
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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: 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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Publication number: 20090074495Abstract: 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: ApplicationFiled: September 15, 2008Publication date: March 19, 2009Inventors: Takamasa Shiraki, Takayuki Andoh, Kohji Hatayama, Yoshihide Ohta, Masato Ogawa, Tetsuya Fujioka, Takuji Takahashi, Yasunobu Youda, Kazushige Kawamura
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Publication number: 20090022516Abstract: 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: ApplicationFiled: July 17, 2008Publication date: January 22, 2009Inventors: Yoshihide Ohta, Takuji Takahashi, Takamasa Shiraki, Takayuki Andoh, Shigeo Nanno
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Publication number: 20080317498Abstract: 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: ApplicationFiled: June 13, 2008Publication date: December 25, 2008Inventors: Takayuki Andoh, Takuji Takahashi, Takamasa Shiraki, Yoshihide Ohta, Kohji Hatayama
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Publication number: 20080291501Abstract: 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: ApplicationFiled: January 31, 2008Publication date: November 27, 2008Inventors: Takamasa Shiraki, Takayuki Andoh, Takuji Takahashi, Yoshihide Ohta, Kohji Hatayama, Takashi Yokota