Patents by Inventor Shinichiro Naruse
Shinichiro Naruse 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: 7784900Abstract: An imaging apparatus is disclosed that includes a carriage that moves back and forth along the main scanning direction, plural recording heads mounted on the carriage that discharge recording liquid, a guide that guides the carriage in the main scanning direction, a power source and a drive pulley that drive the carriage to move in the main scanning direction, a driven pulley that transmits the drive power from the power source to the carriage, and a motion transmitting element that is arranged over the drive pulley and the driven pulley. The carriage is forced toward the guide by a tension generated by deflecting an extending direction of the motion transmitting element.Type: GrantFiled: November 28, 2006Date of Patent: August 31, 2010Assignee: Ricoh Company, Ltd.Inventor: Shinichiro Naruse
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Publication number: 20100149299Abstract: An inkjet recording apparatus provides an improved printing speed and improved convenience of use. A recording head discharges droplets of a recording liquid onto a paper so as to form an image on the paper. A belt conveyance mechanism has a belt onto which the paper is electrostatically attached. The paper attached onto the belt is conveyed in a direction perpendicular to a carding direction of the paper.Type: ApplicationFiled: February 23, 2010Publication date: June 17, 2010Inventors: Hajime NISHIDA, Manabu Nonaka, Eiki Yoshimizu, Shinichiro Naruse, Yasuhiro Kawashima, Hideki Sueoka, Tetsu Morino, Kazumasa Ishikawa, Yasunobu Youda, Akihiro Fujita, Shoji Asanuma, Masatoshi Sakakitani, Taku Kudoh, Shigeyuki Ito, Yohzoh Dohki, Koji Watanabe
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Patent number: 7712892Abstract: An inkjet recording apparatus provides an improved printing speed and improved convenience of use. A recording head discharges droplets of a recording liquid onto a paper so as to form an image on the paper. A belt conveyance mechanism has a belt onto which the paper is electrostatically attached. The paper attached onto the belt is conveyed in a direction perpendicular to a carding direction of the paper.Type: GrantFiled: March 2, 2005Date of Patent: May 11, 2010Assignee: Ricoh Company, Ltd.Inventors: Hajime Nishida, Manabu Nonaka, Eiki Yoshimizu, Shinichiro Naruse, Yasuhiro Kawashima, Hideki Sueoka, Tetsu Morino, Kazumasa Ishikawa, Yasunobu Youda, Akihiro Fujita, Shoji Asanuma, Masatoshi Sakakitani, Taku Kudoh, Shigeyuki Ito, Yohzoh Dohki, Koji Watanabe
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Patent number: 7628556Abstract: An inkjet carriage unit is disclosed that includes a main body, a sensor holding part detachably attached to the main body, and an encoder sensor attached to the sensor holding part.Type: GrantFiled: January 3, 2006Date of Patent: December 8, 2009Assignee: Ricoh Company, Ltd.Inventor: Shinichiro Naruse
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Patent number: 7578572Abstract: This patent specification describes an image forming apparatus which includes a carriage, a recording head mounted on the carriage, having a nozzle, and configured to form an image by ejecting recording liquid from the nozzle, a self-maintenance mechanism configured to maintain the recording head in a predetermined condition, which includes a cap member configured to cap the recording head and an absorption mechanism configured to absorb the unused recording liquid ejected into the cap member from the recording head, and a shielding member configured to prevent a flying liquid droplet generated when the absorption mechanism absorbs the unused recording liquid from attaching to a predetermined member of the image forming apparatus.Type: GrantFiled: May 26, 2006Date of Patent: August 25, 2009Assignee: Ricoh Company, Ltd.Inventor: Shinichiro Naruse
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Publication number: 20090189937Abstract: A disclosed image forming apparatus includes a carriage on which a recording head is mounted that has a nozzle array where plural nozzles for ejecting droplets are arranged, the carriage being configured to be moved in a direction orthogonal to a nozzle arrangement direction; a transport belt facing the recording head and configured to transport a sheet; a print pattern forming unit configured to form a print pattern on the transport belt by causing at least the nozzles at opposing ends of the nozzle array to eject the droplets onto the transport belt while stopping the carriage; a reading unit configured to read the print pattern; a measuring unit configured to measure print positions of plural points of the print pattern in a direction orthogonal to the nozzle arrangement direction; and a detecting unit configured to detect an inclination of the recording head.Type: ApplicationFiled: January 26, 2009Publication date: July 30, 2009Applicant: RICOH COMPANY, LTDInventors: Shinichiro Naruse, Kenichi Kawabata, Takayuki Niihara, Mamoru Yorimoto, Tetsu Morino, Takumi Hagiwara
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Publication number: 20090185813Abstract: A disclosed image forming apparatus includes a carriage having a head for jetting droplets; a pattern forming unit configured to form, on a belt, a pattern used for detecting displacement of landing positions of the droplets; a reading unit configured to scan the belt before the pattern formation to output a first result, and scan the pattern to output a second result; a correcting unit configured to correct the displacement based on the second result; a frequency analyzing unit configured to calculate frequencies of the belt and amplitudes of respective frequency components based on the first result; and a peak frequency calculating unit configured to calculate peak frequencies of the belt based on the frequencies of the belt and the amplitudes of the frequency components, the peak frequencies being frequency components whose amplitude exceeds a predetermined level. The pattern is formed at a frequency different from the peak frequencies.Type: ApplicationFiled: January 16, 2009Publication date: July 23, 2009Applicant: RICOH COMPANY, LTD.Inventors: TAKUMI HAGIWARA, KENICHI KAWABATA, MAMORU YORIMOTO, TAKAYUKI NIIHARA, SHINICHIRO NARUSE, TETSU MORINO
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Publication number: 20090184993Abstract: An image forming apparatus includes a carriage carrying a recording head configured to discharge a droplet. A landing position error detecting pattern is formed on a pattern forming member. Based on a result of reading the landing position error detecting pattern, a landing position error of the droplet discharged by the recording head is corrected. Either a first pattern or a second pattern is selected as the landing position error detecting pattern, depending on a surface condition of the pattern forming member. The first pattern produces a relatively small amount of specular reflection compared with diffused reflection, while the second pattern produces a relatively large amount of specular reflection compared with diffused reflection, upon irradiation with light.Type: ApplicationFiled: January 15, 2009Publication date: July 23, 2009Applicant: RICOH COMPANY, LTDInventors: Mamoru YORIMOTO, Kenichi Kawabata, Takayuki Niihara, Shinichiro Naruse, Tetsu Morino, Takumi Hagiwara
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Publication number: 20090147066Abstract: A disclosed image forming apparatus includes a recording head configured to eject liquid droplets onto a sheet to form an image; a transport unit configured to intermittently transport the sheet; a discharge transport unit disposed downstream the transport unit in a transport direction, the discharge transport unit including plural transport rollers configured to transport the sheet in a sheet discharge direction and plural spurs disposed facing the respective transport rollers and arranged in the transport direction; a guide member configured to hold the spurs and be rotatable about a most downstream side or a most upstream side in the transport direction to rotate in a direction away from a sheet transport path; and a stopping and holding unit configured to stop and hold the guide member in a position in which only the spur in the most downstream side in the transport direction is in contact with the sheet.Type: ApplicationFiled: December 2, 2008Publication date: June 11, 2009Applicant: RICOH COMPANY, LTD.Inventors: Akihiro FUJITA, Shinichiro Naruse, Yohzoh Dohki
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Publication number: 20090148181Abstract: A side wall surface of a carriage is disclosed with two first projection parts and a second projection part that define the inclination of a reflective optical sensor in its vertical direction. The two first projection parts are arranged at the same height position with a detection surface as a reference, and the second projection part is arranged at a position higher than the first projection parts with the detection surface as the reference. The second projection part has a first part higher in position from the side wall surface of the carriage than the first projection parts and has a second part lower in position than the first part. The second part has a screw hole into which a clamping member for fixing the reflective optical sensor to the second part is tightened.Type: ApplicationFiled: December 2, 2008Publication date: June 11, 2009Applicant: RICOH COMPANY, LTD.Inventors: Takayuki NIIHARA, Kenichi Kawabata, Shinichiro Naruse, Mamoru Yorimoto, Takumi Hagiwara, Tetsu Morino
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Publication number: 20090136254Abstract: An image forming apparatus includes a carriage, a drive mechanism, a flexible harness, and a support member. The carriage includes a recording head to jet liquid droplets. The drive mechanism, which moves the carriage in a main scanning direction, includes a belt extending in the main scanning direction. The flexible harness, connecting the recording head and another unit, transmits signals between the recording head and another unit. The support member supports the flexible harness in an upright position over the belt. The flexible harness is routed at least partially in the main scanning direction of the carriage. The support member includes a regulation member at an exit portion of the support member to set a vertical height of the support member at the regulation member smaller than a width of the flexible harness.Type: ApplicationFiled: November 14, 2008Publication date: May 28, 2009Applicant: RICOH COMPANY, LTD.Inventors: Takayuki Niihara, Shinichiro Naruse
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Publication number: 20090136258Abstract: An image forming apparatus includes a carriage, a plurality of sub-tanks, a main tank, and a plurality of supply tubes. The carriage includes a plurality of recording heads that jet liquid droplets of a plurality of colored ink. The plurality of sub-tanks supply the plurality of recording heads with the corresponding colored ink. The main tank supplies the corresponding colored ink to each of the sub-tanks. The plurality of supply tubes connect the main tank and the sub-tanks. The plurality of supply tubes are fused in a band-shape at a position between the main tank and the carriage, and a maximum of two of the supply tubes are fused together at a position corresponding to a groove of a tube fixing unit provided to the carriage.Type: ApplicationFiled: November 14, 2008Publication date: May 28, 2009Applicant: RICOH COMPANY, LTD.Inventors: Shinichiro NARUSE, Takayuki Niihara
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Patent number: 7505714Abstract: In an image forming device comprising an image forming part forming an image on a recording sheet, a sheet ejection part provided above the image forming part and stacking the recording sheet on which the image is formed by the image forming part, and an image reading part provided above the sheet ejection part and reading an image of an original document, the sheet ejection part is provided with a cover which is capable of being opened or closed to the sheet ejection part.Type: GrantFiled: May 25, 2005Date of Patent: March 17, 2009Assignee: Ricoh Company, Ltd.Inventors: Shoji Asanuma, Shuji Tanaka, Manabu Nonaka, Kazumasa Ishikawa, Taku Kudoh, Hajime Nishida, Akihiro Fujita, Yasuhiro Kawashima, Kenji Kameyama, Yasunobu Youda, Eiki Yoshimizu, Shinichiro Naruse, Yohzoh Dohki, Shigeyuki Ito
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Patent number: 7431422Abstract: A head cleaner is disclosed that includes a blade that has a top face and wipes the nozzle face of a liquid droplet ejecting head that ejects liquid droplets from nozzles, and a cleaning part that cleans the top face of the blade.Type: GrantFiled: December 13, 2004Date of Patent: October 7, 2008Assignee: Ricoh Company, Ltd.Inventors: Shoji Asanuma, Manabu Nonaka, Hajime Nishida, Akihiro Fujita, Eiki Yoshimizu, Shinichiro Naruse, Yasuhiro Kawashima, Taku Kudoh, Kazumasa Ishikawa, Yohzoh Dohki, Shigeyuki Ito
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Publication number: 20070126787Abstract: An imaging apparatus is disclosed that includes a carriage that moves back and forth along the main scanning direction, plural recording heads mounted on the carriage that discharge recording liquid, a guide that guides the carriage in the main scanning direction, a power source and a drive pulley that drive the carriage to move in the main scanning direction, a driven pulley that transmits the drive power from the power source to the carriage, and a motion transmitting element that is arranged over the drive pulley and the driven pulley. The carriage is forced toward the guide by a tension generated by deflecting an extending direction of the motion transmitting element.Type: ApplicationFiled: November 28, 2006Publication date: June 7, 2007Inventor: Shinichiro Naruse
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Publication number: 20060268053Abstract: This patent specification describes an image forming apparatus which includes a carriage, a recording head mounted on the carriage, having a nozzle, and configured to form an image by ejecting recording liquid from the nozzle, a self-maintenance mechanism configured to maintain the recording head in a predetermined condition, which includes a cap member configured to cap the recording head and an absorption mechanism configured to absorb the unused lo recording liquid ejected into the cap member from the recording head, and a shielding member configured to prevent a flying liquid droplet generated when the absorption mechanism absorbs the unused recording liquid from attaching to a predetermined member of the image forming apparatus.Type: ApplicationFiled: May 26, 2006Publication date: November 30, 2006Inventor: Shinichiro Naruse
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Publication number: 20060146106Abstract: An inkjet carriage unit is disclosed that includes a main body, a sensor holding part detachably attached to the main body, and an encoder sensor attached to the sensor holding part.Type: ApplicationFiled: January 3, 2006Publication date: July 6, 2006Inventor: Shinichiro Naruse
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Publication number: 20050265749Abstract: In an image forming device comprising an image forming part forming an image on a recording sheet, a sheet ejection part provided above the image forming part and stacking the recording sheet on which the image is formed by the image forming part, and an image reading part provided above the sheet ejection part and reading an image of an original document, the sheet ejection part is provided with a cover which is capable of being opened or closed to the sheet ejection part.Type: ApplicationFiled: May 25, 2005Publication date: December 1, 2005Inventors: Shoji Asanuma, Shuji Tanaka, Manabu Nonaka, Kazumasa Ishikawa, Taku Kudoh, Hajime Nishida, Akihiro Fujita, Yasuhiro Kawashima, Kenji Kameyama, Yasunobu Youda, Eiki Yoshimizu, Shinichiro Naruse, Yohzoh Dohki, Shigeyuki Ito
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Publication number: 20050194730Abstract: An inkjet recording apparatus provides an improved printing speed and improved convenience of use. A recording head discharges droplets of a recording liquid onto a paper so as to form an image on the paper. A belt conveyance mechanism has a belt onto which the paper is electrostatically attached. The paper attached onto the belt is conveyed in a direction perpendicular to a carding direction of the paper.Type: ApplicationFiled: March 2, 2005Publication date: September 8, 2005Inventors: Hajime Nishida, Manabu Nonaka, Eiki Yoshimizu, Shinichiro Naruse, Yasuhiro Kawashima, Hideki Sueoka, Tetsu Morino, Kazumasa Ishikawa, Yasunobu Youda, Akihiro Fujita, Shoji Asanuma, Masatoshi Sakakitani, Taku Kudoh, Shigeyuki Ito, Yohzoh Dohki, Koji Watanabe
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Publication number: 20050146554Abstract: A head cleaner is disclosed that includes a blade that has a top face and wipes the nozzle face of a liquid droplet ejecting head that ejects liquid droplets from nozzles, and a cleaning part that cleans the top face of the blade.Type: ApplicationFiled: December 13, 2004Publication date: July 7, 2005Inventors: Shoji Asanuma, Manabu Nonaka, Hajime Nishida, Akihiro Fujita, Eiki Yoshimizu, Shinichiro Naruse, Yasuhiro Kawashima, Taku Kudoh, Kazumasa Ishikawa, Yohzoh Dohki, Shigeyuki Ito