Patents by Inventor Yasuo Matsuyama
Yasuo Matsuyama 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: 9630788Abstract: A paper output tray, which can be included in a paper output unit in an image forming apparatus, includes a tray body, a paper support extension slidably attached to the tray body and arranged switchable between a stored state in which the paper support extension is stored in the tray body and an extended state in which the paper support extension is pulled out to extend from the tray body, and a stopper rotatably attached to the paper support extension and arranged switchable between a folded state in which the stopper is folded to the paper support extension and a standing state in which the stopper is raised from the paper support extension. With the paper support extension in the stored state and the stopper in the folded state, the stopper overlaps an outer surface of the tray body.Type: GrantFiled: October 10, 2013Date of Patent: April 25, 2017Assignee: RICOH COMPANY, LTD.Inventors: Hirofumi Horita, Ippei Kimura, Yasuo Matsuyama, Mizuna Tanaka, Ikuo Fujii
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Patent number: 9108818Abstract: A sheet discharger including a pair of rotary bodies to discharge a sheet to a discharge part by rotating while sandwiching the sheet and to hold the sheet, a part of which is discharged and exposed from a discharge exit of the sheet discharger, and a separation unit operatively connected to the pair of rotary bodies, including an operating part provided closer to the discharge exit than the pair of rotary bodies to support the sheet held by the pair of rotary bodies, that separates the pair of rotary bodies from each other by withdrawal of the sheet held by the pair of rotary bodies toward the discharge exit of the sheet discharger.Type: GrantFiled: October 7, 2010Date of Patent: August 18, 2015Assignee: RICOH COMPANY, LTD.Inventors: Ippei Kimura, Yasuo Matsuyama, Ikuo Fujii
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Patent number: 8807552Abstract: A base plate is selectively attached to a lower surface of a main body of an image forming apparatus or to an optional sheet feeder attachable to the main body.Type: GrantFiled: May 28, 2009Date of Patent: August 19, 2014Assignee: Ricoh Company, LimitedInventors: Kazuyoshi Kondo, Yasuo Matsuyama, Hiroshi Fujiwara, Yasuhide Ohkubo, Ippei Kimura, Toshikane Nishii, Mizuna Tanaka, Tomoyoshi Yamazaki, Haruyuki Honda, Masafumi Takahira
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Patent number: 8798517Abstract: A sheet supplying device that is incorporatable in an image forming apparatus includes a recording media container, a sheet feeding unit to feed a recording medium from the recording media container, and a frame to support the recording media container and the sheet feeding unit. The recording media container is detachably attachable to the frame in a first operation in which the recording media container is moved in a sheet conveyance direction in which the recording medium is conveyed upstream or downstream by the sheet feeding unit, and the recording media container is separated from the frame and the sheet feeding unit with the sheet feeding unit remaining in the frame, and a second operation in which the recording media container is moved in a direction perpendicular to the sheet conveyance direction, and the recording media container is separated from the frame together with the sheet feeding unit.Type: GrantFiled: September 7, 2011Date of Patent: August 5, 2014Assignee: Ricoh Company, Ltd.Inventors: Yasuo Matsuyama, Ippei Kimura, Ikuo Fujii, Takamitsu Ikematsu, Masafumi Takahira, Kaoru Tada, Tomoyoshi Yamazaki, Toru Hanashima, Chikara Hiraoka, Tamotsu Ikeda, Kazuyoshi Kondo
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Publication number: 20140103603Abstract: A paper output tray, which can be included in a paper output unit in an image forming apparatus, includes a tray body, a paper support extension slidably attached to the tray body and arranged switchable between a stored state in which the paper support extension is stored in the tray body and an extended state in which the paper support extension is pulled out to extend from the tray body, and a stopper rotatably attached to the paper support extension and arranged switchable between a folded state in which the stopper is folded to the paper support extension and a standing state in which the stopper is raised from the paper support extension. With the paper support extension in the stored state and the stopper in the folded state, the stopper overlaps an outer surface of the tray body.Type: ApplicationFiled: October 10, 2013Publication date: April 17, 2014Applicant: Ricoh Company, Ltd.Inventors: Hirofumi HORITA, Ippei KIMURA, Yasuo MATSUYAMA, Mizuna TANAKA, Ikuo FUJII
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Publication number: 20140077444Abstract: A feeding device includes a paper feed tray, a detector on an image forming apparatus main body, a control member rotatably supported by the paper feed tray, and spacers. The detector includes movable pieces and contact points corresponding to the movable piece, and switches each contact point by the position of the corresponding movable piece. The control member includes a control surface formed on its outer circumferential surface with projecting and recessed portions. The projecting and recessed portions are disposed in a pattern corresponding to rotation angles in an area of the control surface facing the movable pieces. Controlling the positions of the movable pieces according to the pattern encodes paper size. Each movable piece is lined in the circumferential direction facing the control surface. The outer circumferential surface of the projecting portions is formed in a cylindrical surface shape centering around the rotational axis of the control member.Type: ApplicationFiled: September 12, 2013Publication date: March 20, 2014Applicant: RICOH COMPANY, LIMITEDInventors: Ikuo FUJII, Yasuo MATSUYAMA, Ippei KIMURA, Mizuna TANAKA, Hirofumi HORITA, Takamitsu IKEMATSU, Kaoru TADA
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Patent number: 8360418Abstract: A sheet supplying device that is incorporatable in an image forming apparatus includes a recording media container, a sheet feeding unit to feed a recording medium from the recording media container, a frame to support the recording media container and the sheet feeding unit, and a holder to hold the recording media container by surrounding an outer circumference of the recording media container. The recording media container is detachably attachable to the frame in a first operation in which the recording media container is moved in a direction parallel to a sheet conveyance direction and the recording media container is separated from the frame and the holder with the holder remaining in the frame, and a second operation in which the recording media container is moved in a direction perpendicular to the sheet conveyance direction and the recording media container is separated from the frame together with the holder.Type: GrantFiled: September 7, 2011Date of Patent: January 29, 2013Assignee: Ricoh, Company, Ltd.Inventors: Yasuo Matsuyama, Takamitsu Ikematsu, Kaoru Tada, Ippei Kimura, Ikuo Fujii
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Patent number: 8260187Abstract: An image forming device is disclosed. The device includes a toner-image forming unit which forms a toner image; a transfer unit; a fixing unit; a paper-output unit; a drive unit; a first drive-power transmission gear; a second drive-power transmission gear; a gear housing; a first positioning unit which positions the fixing unit relative to a device body; and a second positioning unit. The second positioning unit positions the paper-output unit relative to the device body in the direction of a gap between the first drive-power transmission gear and the second drive-power transmission gear by engaging the gear housing with the device body.Type: GrantFiled: October 22, 2008Date of Patent: September 4, 2012Assignee: Ricoh Company, Ltd.Inventors: Haruyuki Honda, Yasuo Matsuyama, Hiroshi Fujiwara, Kazuyoshi Kondo, Yasuhide Ohkubo, Ippei Kimura, Toshikane Nishii, Mizuna Tanaka, Tomoyoshi Yamazaki, Masafumi Takahira
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Patent number: 8240657Abstract: A sheet feeding device includes a sheet feeding member, a friction separation member, a retaining member, a downstream guiding member, and a biasing member. The downstream guiding member is arranged downstream of a sheet conveyance direction than the friction separation member such that its guide surface is inclined at a predetermined angle to a front surface of the friction separation member towards the sheet feeding member. A line joining an apex of a sheet guiding member arranged upstream of the sheet conveyance direction than the friction separation member and an apex of the downstream guiding unit is positioned towards the sheet feeding member than a contact portion of the sheet feeding member and the friction separation member.Type: GrantFiled: October 23, 2008Date of Patent: August 14, 2012Assignee: Ricoh Company, Ltd.Inventors: Mizuna Tanaka, Hiroshi Fujiwara, Yasuo Matsuyama, Kazuyoshi Kondo, Toshikane Nishii, Ippei Kimura, Tomoyoshi Yamazaki, Haruyuki Honda, Yasuhide Ohkubo, Masafumi Takahira, Ikuo Fujii
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Patent number: 8244474Abstract: A feature pattern recognition system, method, and program capable of recognizing feature pattern with a high accuracy are provided.Type: GrantFiled: August 2, 2005Date of Patent: August 14, 2012Assignee: Waseda UniversityInventors: Yasuo Matsuyama, Ryo Kawamura, Keita Shimoda
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Patent number: 8194266Abstract: A positional error detection method forms, on a belt which is transported in a transport direction, positional error detection marks for detecting a positional error between image positions of first and second colors, detects the positional error detection marks on the belt, and computes the positional error based on the detected positional error detection marks. The positional error detection marks include first and second marks which are inclined in mutually opposite directions with respect to the transport direction, and third marks which are perpendicular to the transport direction.Type: GrantFiled: December 12, 2008Date of Patent: June 5, 2012Assignee: Ricoh Company, Ltd.Inventors: Tatsuya Miyadera, Kenji Asuwa, Izumi Kinoshita, Hiroaki Ikeda, Tatsuya Ozaki, Yasuo Matsuyama, Hirokazu Iwata
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Publication number: 20120061907Abstract: A sheet supplying device that is incorporatable in an image forming apparatus includes a recording media container, a sheet feeding unit to feed a recording medium from the recording media container, a frame to support the recording media container and the sheet feeding unit, and a holder to hold the recording media container by surrounding an outer circumference of the recording media container. The recording media container is detachably attachable to the frame in a first operation in which the recording media container is moved in a direction parallel to a sheet conveyance direction and the recording media container is separated from the frame and the holder with the holder remaining in the frame, and a second operation in which the recording media container is moved in a direction perpendicular to the sheet conveyance direction and the recording media container is separated from the frame together with the holder.Type: ApplicationFiled: September 7, 2011Publication date: March 15, 2012Applicant: Ricoh Company, Ltd.Inventors: Yasuo Matsuyama, Takamitsu Ikematsu, Kaoru Tada, Ippei Kimura, Ikuo Fujii
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Publication number: 20120063829Abstract: A sheet supplying device that is incorporatable in an image forming apparatus includes a recording media container, a sheet feeding unit to feed a recording medium from the recording media container, and a frame to support the recording media container and the sheet feeding unit. The recording media container is detachably attachable to the frame in a first operation in which the recording media container is moved in a sheet conveyance direction in which the recording medium is conveyed upstream or downstream by the sheet feeding unit, and the recording media container is separated from the frame and the sheet feeding unit with the sheet feeding unit remaining in the frame, and a second operation in which the recording media container is moved in a direction perpendicular to the sheet conveyance direction, and the recording media container is separated from the frame together with the sheet feeding unit.Type: ApplicationFiled: September 7, 2011Publication date: March 15, 2012Applicant: Ricoh Company, Ltd.Inventors: Yasuo Matsuyama, Ippei Kimura, Ikuo Fujii, Takamitsu Ikematsu, Masafumi Takahira, Kaoru Tada, Tomoyoshi Yamazaki, Toru Hanashima, Chikara Hiraoka, Tamotsu Ikeda, Kazuyoshi Kondo
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Patent number: 8118301Abstract: A sheet discharging device including a sheet discharging unit provided at one end of an image forming apparatus; a sheet discharge tray located adjacent to the sheet discharging unit, rotatably provided at the end of the image forming apparatus in a stored position to cover the end of the image forming apparatus and in an extended position extended from the end of the image forming apparatus to stack sheets discharged from the image forming apparatus; and a driving mechanism to drive a shutter provided to the sheet discharge tray in conjunction with rotary movement of the sheet discharge tray to open an opening in the sheet discharge tray in the stored position and to close the opening in the sheet discharge tray in the extended position.Type: GrantFiled: July 7, 2010Date of Patent: February 21, 2012Assignee: Ricoh Company, LimitedInventors: Ikuo Fujii, Yasuo Matsuyama, Ippei Kimura
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Patent number: 7992860Abstract: A sheet feeding device includes a first roller that draws a recording medium at a first position and feeds the recording medium; a friction pad that comes into contact with the first roller with a predetermined contact pressure at a second position that is close to and downstream of the first position in a conveying direction of the recording medium and nips the recording medium with the first roller to convey the recording medium in the conveying direction; and a second roller that comes into contact with the first roller at a third position that is close to and downstream of the second position in the conveying direction and nips the recording medium with the first roller.Type: GrantFiled: May 14, 2009Date of Patent: August 9, 2011Assignee: Ricoh Company, Ltd.Inventors: Ippei Kimura, Yasuo Matsuyama, Hiroshi Fujiwara, Yasuhide Ohkubo, Toshikane Nishii, Mizuna Tanaka, Tomoyoshi Yamazaki, Haruyuki Honda, Masafumi Takahira
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Publication number: 20110097126Abstract: A sheet discharger including a pair of rotary bodies to discharge a sheet to a discharge part by rotating while sandwiching the sheet and to hold the sheet, a part of which is discharged and exposed from a discharge exit of the sheet discharger, and a separation unit operatively connected to the pair of rotary bodies, including an operating part provided closer to the discharge exit than the pair of rotary bodies to support the sheet held by the pair of rotary bodies, that separates the pair of rotary bodies from each other by withdrawal of the sheet held by the pair of rotary bodies toward the discharge exit of the sheet discharger.Type: ApplicationFiled: October 7, 2010Publication date: April 28, 2011Applicant: Ricoh Company, Ltd.Inventors: Ippei Kimura, Yasuo Matsuyama, Ikuo Fujii
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Publication number: 20110024966Abstract: A sheet discharging device including a sheet discharging unit provided at one end of an image forming apparatus; a sheet discharge tray located adjacent to the sheet discharging unit, rotatably provided at the end of the image forming apparatus in a stored position to cover the end of the image forming apparatus and in an extended position extended from the end of the image forming apparatus to stack sheets discharged from the image forming apparatus; and a driving mechanism to drive a shutter provided to the sheet discharge tray in conjunction with rotary movement of the sheet discharge tray to open an opening in the sheet discharge tray in the stored position and to close the opening in the sheet discharge tray in the extended position.Type: ApplicationFiled: July 7, 2010Publication date: February 3, 2011Inventors: Ikuo Fujii, Yasuo Matsuyama, Ippei Kimura
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Publication number: 20100225041Abstract: An image forming system includes an image forming apparatus that that forms an image on a paper sheet and a sheet finishing device that performs finishing on a paper sheet discharged from the image forming apparatus. The sheet finishing device is disposed beneath the image forming apparatus.Type: ApplicationFiled: February 3, 2010Publication date: September 9, 2010Inventors: Yasuo Matsuyama, Yasuhide Ohkubo, Ippei Kimura, Ikuo Fujii, Mizuna Tanaka, Kenji Sueyoshi, Yasuo Yamaguchi, Shunsuke Hamahashi
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Patent number: 7773912Abstract: A support unit supports a rotation axe of each of at least three latent-image carriers in a rotatable manner. A plurality of developing units develops latent images on the latent-image carriers with toners of different colors, respectively. A toner-pattern detecting unit detects a toner pattern formed on a belt member that is suspended by a plurality of suspending members. A displacing unit is provided to the support unit to displace the rotation axis along a surface of the belt member in a direction of movement of the surface of the belt member. A control unit controls the displacing unit based of a result of detecting the toner pattern by the toner-pattern detecting unit.Type: GrantFiled: December 7, 2007Date of Patent: August 10, 2010Assignee: Ricoh Company, Ltd.Inventor: Yasuo Matsuyama
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Patent number: 7677555Abstract: A sheet conveying apparatus includes a sheet containing unit that contains sheets; a sheet conveying unit that conveys the sheets; a separating unit that separates a single sheet from the sheets; a holding unit that holds the separating unit; and a vibration applying unit that applies a vibration to any one of the sheets conveyed by the sheet conveying unit and the separating unit before starting conveyance of the sheets.Type: GrantFiled: December 19, 2008Date of Patent: March 16, 2010Assignee: Ricoh Company, LimitedInventors: Mizuna Tanaka, Yasuo Matsuyama, Hiroshi Fujiwara, Tomoyoshi Yamazaki, Toshikane Nishii, Kazuyoshi Kondo, Yasuhide Ohkubo, Haruyuki Honda, Ippei Kimura, Masafumi Takahira