Patents by Inventor Yoshikane Matsumoto
Yoshikane Matsumoto 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: 11370230Abstract: A device includes a temperature control member and a linearly-contact member. The temperature control member has an outer peripheral surface to contact a conveyed substrate to which liquid is applied, and heats or cools the substrate. The linearly-contact member contacts the substrate and the temperature control member on an upstream side from a contact position between the substrate and the temperature control member in a conveyance direction of the substrate.Type: GrantFiled: July 9, 2021Date of Patent: June 28, 2022Assignee: Ricoh Company, Ltd.Inventors: Naohiro Toda, Toshiya Satoh, Teiichiro Ishikawa, Masaya Hamaguchi, HuiZee Then, Hidehisa Shibasaki, Yoshikane Matsumoto
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Publication number: 20220016906Abstract: A device includes a temperature control member and a linearly-contact member. The temperature control member has an outer peripheral surface to contact a conveyed substrate to which liquid is applied, and heats or cools the substrate. The linearly-contact member contacts the substrate and the temperature control member on an upstream side from a contact position between the substrate and the temperature control member in a conveyance direction of the substrate.Type: ApplicationFiled: July 9, 2021Publication date: January 20, 2022Applicant: Ricoh Company, Ltd.Inventors: Naohiro Toda, Toshiya Satoh, Teiichiro Ishikawa, Masaya Hamaguchi, HuiZee Then, Hidehisa Shibasaki, Yoshikane Matsumoto
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Patent number: 9375958Abstract: An image forming apparatus includes a sheet feed conveying unit having an outlet for a recording medium on one side; at least one image forming unit having an inlet for the recording medium on one side and an outlet for the recording medium on the other side; and a sheet eject conveying unit having an inlet for the recording medium on one side, wherein the sheet feed conveying unit, the image forming unit, and the sheet eject conveying unit are arranged along a conveying direction of the recording medium; the outlet of the sheet feed conveying unit matches the inlet of the image forming unit; the outlet of the image forming unit matches the inlet of the sheet eject conveying unit; and the sheet feed conveying unit, the image forming unit, and the sheet eject conveying unit are connected to each other in a separable manner.Type: GrantFiled: September 12, 2014Date of Patent: June 28, 2016Assignee: RICOH COMPANY, LTD.Inventors: Yuuji Ohmura, Yasushi Hashimoto, Yoshikane Matsumoto
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Patent number: 9259947Abstract: An image forming apparatus includes a sheet feed conveying unit having an outlet for a recording medium on one side; at least one image forming unit having an inlet for the recording medium on one side and an outlet for the recording medium on the other side; and a sheet eject conveying unit having an inlet for the recording medium on one side, wherein the sheet feed conveying unit, the image forming unit, and the sheet eject conveying unit are arranged along a conveying direction of the recording medium; the outlet of the sheet feed conveying unit matches the inlet of the image forming unit; the outlet of the image forming unit matches the inlet of the sheet eject conveying unit; and the sheet feed conveying unit, the image forming unit, and the sheet eject conveying unit are connected to each other in a separable manner.Type: GrantFiled: October 20, 2009Date of Patent: February 16, 2016Assignee: RICOH COMPANY, LTD.Inventors: Yuuji Ohmura, Yasushi Hashimoto, Yoshikane Matsumoto
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Publication number: 20140375741Abstract: An image forming apparatus includes a sheet feed conveying unit having an outlet for a recording medium on one side; at least one image forming unit having an inlet for the recording medium on one side and an outlet for the recording medium on the other side; and a sheet eject conveying unit having an inlet for the recording medium on one side, wherein the sheet feed conveying unit, the image forming unit, and the sheet eject conveying unit are arranged along a conveying direction of the recording medium; the outlet of the sheet feed conveying unit matches the inlet of the image forming unit; the outlet of the image forming unit matches the inlet of the sheet eject conveying unit; and the sheet feed conveying unit, the image forming unit, and the sheet eject conveying unit are connected to each other in a separable manner.Type: ApplicationFiled: September 12, 2014Publication date: December 25, 2014Applicant: RICOH COMPANY, LTD.Inventors: Yuuji OHMURA, Yasushi HASHIMOTO, Yoshikane MATSUMOTO
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Patent number: 8870328Abstract: An image forming apparatus includes a sheet feed conveying unit having an outlet for a recording medium on one side; at least one image forming unit having an inlet for the recording medium on one side and an outlet for the recording medium on the other side; and a sheet eject conveying unit having an inlet for the recording medium on one side, wherein the sheet feed conveying unit, the image forming unit, and the sheet eject conveying unit are arranged along a conveying direction of the recording medium; the outlet of the sheet feed conveying unit matches the inlet of the image forming unit; the outlet of the image forming unit matches the inlet of the sheet eject conveying unit; and the sheet feed conveying unit, the image forming unit, and the sheet eject conveying unit are connected to each other in a separable manner.Type: GrantFiled: March 15, 2013Date of Patent: October 28, 2014Assignee: Ricoh Company, Ltd.Inventors: Yuuji Ohmura, Yasushi Hashimoto, Yoshikane Matsumoto
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Publication number: 20130201267Abstract: An image forming apparatus includes a sheet feed conveying unit having an outlet for a recording medium on one side; at least one image forming unit having an inlet for the recording medium on one side and an outlet for the recording medium on the other side; and a sheet eject conveying unit having an inlet for the recording medium on one side, wherein the sheet feed conveying unit, the image forming unit, and the sheet eject conveying unit are arranged along a conveying direction of the recording medium; the outlet of the sheet feed conveying unit matches the inlet of the image forming unit; the outlet of the image forming unit matches the inlet of the sheet eject conveying unit; and the sheet feed conveying unit, the image forming unit, and the sheet eject conveying unit are connected to each other in a separable manner.Type: ApplicationFiled: March 15, 2013Publication date: August 8, 2013Applicant: RICOH COMPANY, LTD.Inventors: Yuuji OHMURA, Yasushi HASHIMOTO, Yoshikane MATSUMOTO
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Publication number: 20100110134Abstract: An image forming apparatus includes a sheet feed conveying unit having an outlet for a recording medium on one side; at least one image forming unit having an inlet for the recording medium on one side and an outlet for the recording medium on the other side; and a sheet eject conveying unit having an inlet for the recording medium on one side, wherein the sheet feed conveying unit, the image forming unit, and the sheet eject conveying unit are arranged along a conveying direction of the recording medium; the outlet of the sheet feed conveying unit matches the inlet of the image forming unit; the outlet of the image forming unit matches the inlet of the sheet eject conveying unit; and the sheet feed conveying unit, the image forming unit, and the sheet eject conveying unit are connected to each other in a separable manner.Type: ApplicationFiled: October 20, 2009Publication date: May 6, 2010Applicant: RICOH COMPANY, LTD.Inventors: Yuuji OHMURA, Yasushi HASHIMOTO, Yoshikane MATSUMOTO
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Patent number: 7413294Abstract: An inkjet head includes a common ink puddle section, a nozzle plate having a plurality of nozzle orifices, an ink flow channel substrate having grooves communicating from the common ink puddle section to the nozzle orifices, and being formed alternatively in front and back surfaces of the ink flow channel substrate, to end sections of the grooves the nozzle plate being fixed, a chamber plate being stacked on the ink flow channel substrate, and having pressure generation chambers corresponding to the nozzle orifices, a diaphragm stacking on the chamber plate opposite from the ink flow channel substrate, a pressure generator provided on the diaphragm for the respective pressure generation chambers to generate a change in an internal pressure. Preferably, a volumetric capacity of the pressure generation chambers is changed in accordance with a change in the pressure, to eject an ink droplet from the nozzle orifice.Type: GrantFiled: March 1, 2004Date of Patent: August 19, 2008Assignee: Ricoh Printing Systems, Ltd.Inventors: Satoru Tobita, Yoshitaka Akiyama, Toshiharu Sumiya, Yoshikane Matsumoto
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Patent number: 7131718Abstract: A housing of inkjet head has a projection that is formed with a plurality of opening grooves defined between adjacent two of projecting parts, and tip ends of the projecting parts are fixed to a diaphragm plate. Piezoelectric elements are inserted in respective opening grooves and fixed to a diaphragm of the diaphragm plate at positions opposite respective pressure chambers.Type: GrantFiled: June 16, 2004Date of Patent: November 7, 2006Assignee: Ricoh Printing Systems, Ltd.Inventors: Ryouta Matsufuji, Satoru Tobita, Yoshitaka Akiyama, Toshiharu Sumiya, Yoshikane Matsumoto
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Publication number: 20060187274Abstract: A chamber support plate of an inkjet head is formed as a member different from a housing. The chamber support plate is formed with a plurality of grooves at high density by a dicing saw or the like. Piezoelectric elements are inserted into the grooves and adhered to a chamber plate. The plurality of grooves define comb teeth portions, which support the chamber plate at positions between adjacent piezoelectric elements.Type: ApplicationFiled: March 16, 2006Publication date: August 24, 2006Inventors: Osamu Machida, Tomohiko Koda, Satoru Tobita, Yoshitaka Akiyama, Toshiharu Sumiya, Yoshikane Matsumoto
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Patent number: 7090340Abstract: An inkjet recording head includes: a nozzle plate having nozzles arranged in a row; a plurality of pressure generating chambers communicating to the nozzles, the plurality of pressure generating chambers including a first pressure generating chamber and a second pressure generating chamber; a diaphragm formed on one face of the pressure generating chamber; a common ink chamber for supplying the ink to the plurality of pressure generating chambers; and a piezoelectric element for displacing the diaphragm. The first pressure generating chamber is disposed on one side of the nozzles and a second pressure generating chamber is disposed on the other side. The first and second pressure generating chambers are opposed to each other across the nozzles so that the central lines of the first and second pressure generating chambers are almost coincident.Type: GrantFiled: December 3, 2003Date of Patent: August 15, 2006Assignee: Hitachi Printing Solutions, Ltd.Inventors: Satoru Tobita, Yoshitaka Akiyama, Toshiharu Sumiya, Yoshikane Matsumoto
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Patent number: 7077511Abstract: A chamber support plate of an inkjet head is formed as a member different from a housing. The chamber support plate is formed with a plurality of grooves at high density by a dicing saw or the like. Piezoelectric elements are inserted into the grooves and adhered to a chamber plate. The plurality of grooves define comb teeth portions, which support the chamber plate at positions between adjacent piezoelectric elements.Type: GrantFiled: August 26, 2003Date of Patent: July 18, 2006Assignee: Ricoh Printing Systems Ltd.Inventors: Osamu Machida, Tomohiko Koda, Satoru Tobita, Yoshitaka Akiyama, Toshiharu Sumiya, Yoshikane Matsumoto
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Patent number: 6837574Abstract: A recording head 200 has a plurality of nozzle orifices aligned in a row extending in a first direction. The recording head 200 is arranged with the nozzle orifices in confrontation with a recording medium P. The recording medium P is moved in a second direction B with respect to the recording head 200. Also, ink droplets ejected from the nozzle orifices are charged to a charged amount that corresponds to deflection amount of the ink droplets. The charged ink droplets are deflected in a direction perpendicular to a main scanning line. The plurality of ink droplets ejected from the plurality of nozzle orifices impinge on the same pixel position or at a nearby position so that it is possible to impinge multiple droplets at the same pixel position or a nearby position. As a result, it is possible to back up broken nozzles and to reduce recording distortion.Type: GrantFiled: December 28, 2000Date of Patent: January 4, 2005Assignee: Hitachi Printing Solutions, Ltd.Inventors: Takahiro Yamada, Shinya Kobayashi, Hitoshi Kida, Kunio Satou, Toshitaka Ogawa, Yoshikane Matsumoto, Katsunori Kawasumi, Kazuo Shimizu
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Publication number: 20040263579Abstract: A housing of inkjet head has a projection that is formed with a plurality of opening grooves defined between adjacent two of projecting parts, and tip ends of the projecting parts are fixed to a diaphragm plate. Piezoelectric elements are inserted in respective opening grooves and fixed to a diaphragm of the diaphragm plate at positions opposite respective pressure chambers.Type: ApplicationFiled: June 16, 2004Publication date: December 30, 2004Inventors: Ryouta Matsufuji, Satoru Tobita, Yoshitaka Akiyama, Toshiharu Sumiya, Yoshikane Matsumoto
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Publication number: 20040169704Abstract: An inkjet head includes a common ink puddle section, a nozzle plate having a plurality of nozzle orifices, an ink flow channel substrate having grooves communicating from the common ink puddle section to the nozzle orifices, and being formed alternatively in front and back surfaces of the ink flow channel substrate, to end sections of the grooves the nozzle plate being fixed, a chamber plate being stacked on the ink flow channel substrate, and having pressure generation chambers corresponding to the nozzle orifices, a diaphragm stacking on the chamber plate opposite from the ink flow channel substrate, a pressure generator provided on the diaphragm for the respective pressure generation chambers to generate a change in an internal pressure. Preferably, a volumetric capacity of the pressure generation chambers is changed in accordance with a change in the pressure, to eject an ink droplet from the nozzle orifice.Type: ApplicationFiled: March 1, 2004Publication date: September 2, 2004Applicant: Hitachi Printing Solutions, Ltd.Inventors: Satoru Tobita, Yoshitaka Akiyama, Toshiharu Sumiya, Yoshikane Matsumoto
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Publication number: 20040109047Abstract: An inkjet recording head includes: a nozzle plate having nozzles arranged in a row; a plurality of pressure generating chambers communicating to the nozzles, the plurality of pressure generating chambers including a first pressure generating chamber and a second pressure generating chamber; a diaphragm formed on one face of the pressure generating chamber; a common ink chamber for supplying the ink to the plurality of pressure generating chambers; and a piezoelectric element for displacing the diaphragm. The first pressure generating chamber is disposed on one side of the nozzles and a second pressure generating chamber is disposed on the other side. The first and second pressure generating chambers are opposed to each other across the nozzles so that the central lines of the first and second pressure generating chambers are almost coincident.Type: ApplicationFiled: December 3, 2003Publication date: June 10, 2004Applicant: Hitachi Printing Solutions, Ltd.Inventors: Satoru Tobita, Yoshitaka Akiyama, Toshiharu Sumiya, Yoshikane Matsumoto
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Publication number: 20040066431Abstract: A chamber support plate of an inkjet head is formed as a member different from a housing. The chamber support plate is formed with a plurality of grooves at high density by a dicing saw or the like. Piezoelectric elements are inserted into the grooves and adhered to a chamber plate. The plurality of grooves define comb teeth portions, which support the chamber plate at positions between adjacent piezoelectric elements.Type: ApplicationFiled: August 26, 2003Publication date: April 8, 2004Inventors: Osamu Machida, Tomohiko Koda, Satoru Tobita, Yoshitaka Akiyama, Toshiharu Sumiya, Yoshikane Matsumoto
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Patent number: 6618159Abstract: When print mode of a printing device is switched to a print mode with a higher print speed, after the direction of shuttle movement is reversed, a time duration that driving current is applied to a reversing coil is increased, so that shuttle speed is increased to a target speed. A time duration that driving current is applied to a constant velocity coil is decreased accordingly. On the other hand, when the print mode is switched to a print mode with a lower print speed, the time duration that driving current is applied to the reversing coil is decreased, and the time duration that driving current is applied to the constant velocity coil is increased accordingly. In this way, the print modes of the printing device can be switched quickly without stopping printing operations, thereby enhancing throughput.Type: GrantFiled: October 1, 1999Date of Patent: September 9, 2003Assignee: Hitachi Koki Co., Ltd.Inventors: Satoru Tobita, Yoshikane Matsumoto, Hideaki Mamiya
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Patent number: 6561629Abstract: A back electrode 30 is provided at a rear surface side of a recording sheet 60. An orifice electrode 11 is attached to an orifice plate 15 of a head module 10. The orifice electrode 11, the orifice plate 15, and ink filling in a nozzle element 2 are electrically connected to the ground. The back electrode 30 has the potential corresponding to that of a charging/deflecting signal. With this configuration, the orifice electrode 11, a pressure chamber 13, and the back electrode 30 together generates an inclined electric field 85 at a position a close to a center trajectory 90. A charged ink droplet is deflected greatly by the inclined electric field 85, at an early stage of the ink flight, and even greater deflection can be achieved as the flight proceeds.Type: GrantFiled: March 13, 2002Date of Patent: May 13, 2003Assignee: Hitachi Koki Co., Ltd.Inventors: Takahiro Yamada, Kunio Satou, Shinya Kobayashi, Hitoshi Kida, Kazuo Shimizu, Toshitaka Ogawa, Yoshikane Matsumoto, Lee Chahn