Patents by Inventor Nagayasu YOSHIDA
Nagayasu YOSHIDA 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: 11548752Abstract: A sheet processing apparatus is configured to press a fold line that is formed on a sheet. The sheet processing apparatus includes: a sheet supporting unit configured to support the sheet in a pressing direction for pressing the fold line; a pressing unit configured to press the fold line that is formed on the sheet that is supported by the sheet supporting unit; and a pressing-force generating unit configured to generate a pressing force for pressing the sheet supporting unit against the pressing unit at a central part in a direction along which the fold line is formed.Type: GrantFiled: December 21, 2020Date of Patent: January 10, 2023Assignee: RICOH COMPANY, LIMITEDInventors: Kenji Hari, Manabu Yamanaka, Nagayasu Yoshida
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Publication number: 20220297963Abstract: A sheet feeding device feeds a sheet in a feed direction. The sheet feeding device includes a loading portion, a feeler, and a first detection sensor. The sheet is to be placed on the loading portion. The feeler rotates from a reference position to a pushed position around a support shaft in response to a push by a downstream end of the sheet, which is placed on the loading portion, in the feeding direction. The first detection sensor detects a rotation of the feeler from one of the reference position and the pushed position to the other of the reference position and the pushed position. The loading portion includes a second detection sensor to detect a state in which the sheet is placed on the loading portion.Type: ApplicationFiled: March 2, 2022Publication date: September 22, 2022Applicant: Ricoh Company, Ltd.Inventors: Ryo SUZUKI, Ryohei MORISAKI, Kenji HARI, Nagayasu YOSHIDA, Katsuji YAMAGUCHI
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Patent number: 11358825Abstract: A post-processing apparatus includes a binding device, a closing device, a driver, and a changeover switch. The binding device binds a sheet bundle. The closing device closes an entrance to a binding position at which the binding device binds the sheet bundle. The driver moves the closing device to a closing position to close the entrance. The switch performs switching to implement a state in which the binding device is able to bind the sheet bundle when the closing device moves to the closing position. The closing device includes an avoidance operation portion to move to the closing position to operate the switch, and a drive coupler coupled to the avoidance operation portion to move the avoidance operation portion to the closing position. A coupling state between the avoidance operation portion and the drive coupler is released when movement of the avoidance operation portion to the closing position is prevented.Type: GrantFiled: April 22, 2021Date of Patent: June 14, 2022Assignee: Ricoh Company, Ltd.Inventors: Nagayasu Yoshida, Akihiro Tsuno
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Publication number: 20210331889Abstract: A post-processing apparatus includes a binding device, a closing device, a driver, and a changeover switch. The binding device binds a sheet bundle. The closing device closes an entrance to a binding position at which the binding device binds the sheet bundle. The driver moves the closing device to a closing position to close the entrance. The switch performs switching to implement a state in which the binding device is able to bind the sheet bundle when the closing device moves to the closing position. The closing device includes an avoidance operation portion to move to the closing position to operate the switch, and a drive coupler coupled to the avoidance operation portion to move the avoidance operation portion to the closing position. A coupling state between the avoidance operation portion and the drive coupler is released when movement of the avoidance operation portion to the closing position is prevented.Type: ApplicationFiled: April 22, 2021Publication date: October 28, 2021Applicant: Ricoh Company, Ltd.Inventors: Nagayasu YOSHIDA, Akihiro TSUNO
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Publication number: 20210107761Abstract: A sheet processing apparatus is configured to press a fold line that is formed on a sheet. The sheet processing apparatus includes: a sheet supporting unit configured to support the sheet in a pressing direction for pressing the fold line; a pressing unit configured to press the fold line that is formed on the sheet that is supported by the sheet supporting unit; and a pressing-force generating unit configured to generate a pressing force for pressing the sheet supporting unit against the pressing unit at a central part in a direction along which the fold line is formed.Type: ApplicationFiled: December 21, 2020Publication date: April 15, 2021Applicant: Ricoh Company, Ltd.Inventors: Kenji HARI, Manabu YAMANAKA, Nagayasu YOSHIDA
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Patent number: 10894690Abstract: A sheet processing apparatus is configured to press a fold line that is formed on a sheet. The sheet processing apparatus includes: a sheet supporting unit configured to support the sheet in a pressing direction for pressing the fold line; a pressing unit configured to press the fold line that is formed on the sheet that is supported by the sheet supporting unit; and a pressing-force generating unit configured to generate a pressing force for pressing the sheet supporting unit against the pressing unit at a central part in a direction along which the fold line is formed.Type: GrantFiled: May 7, 2018Date of Patent: January 19, 2021Assignee: RICOH COMPANY, LIMITEDInventors: Kenji Hari, Manabu Yamanaka, Nagayasu Yoshida
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Publication number: 20180251332Abstract: A sheet processing apparatus is configured to press a fold line that is formed on a sheet. The sheet processing apparatus includes: a sheet supporting unit configured to support the sheet in a pressing direction for pressing the fold line; a pressing unit configured to press the fold line that is formed on the sheet that is supported by the sheet supporting unit; and a pressing-force generating unit configured to generate a pressing force for pressing the sheet supporting unit against the pressing unit at a central part in a direction along which the fold line is formed.Type: ApplicationFiled: May 7, 2018Publication date: September 6, 2018Applicant: Ricoh Company, Ltd.Inventors: Kenji HARI, Manabu YAMANAKA, Nagayasu YOSHIDA
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Patent number: 9994414Abstract: A sheet processing apparatus is configured to press a fold line that is formed on a sheet. The sheet processing apparatus includes: a sheet supporting unit configured to support the sheet in a pressing direction for pressing the fold line; a pressing unit configured to press the fold line that is formed on the sheet that is supported by the sheet supporting unit; and a pressing-force generating unit configured to generate a pressing force for pressing the sheet supporting unit against the pressing unit at a central part in a direction along which the fold line is formed.Type: GrantFiled: April 5, 2017Date of Patent: June 12, 2018Assignee: RICOH COMPANY, LIMITEDInventors: Kenji Hari, Manabu Yamanaka, Nagayasu Yoshida
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Publication number: 20170203935Abstract: A sheet processing apparatus is configured to press a fold line that is formed on a sheet. The sheet processing apparatus includes: a sheet supporting unit configured to support the sheet in a pressing direction for pressing the fold line; a pressing unit configured to press the fold line that is formed on the sheet that is supported by the sheet supporting unit; and a pressing-force generating unit configured to generate a pressing force for pressing the sheet supporting unit against the pressing unit at a central part in a direction along which the fold line is formed.Type: ApplicationFiled: April 5, 2017Publication date: July 20, 2017Applicant: Ricoh Company, Ltd.Inventors: Kenji HARI, Manabu YAMANAKA, Nagayasu YOSHIDA
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Patent number: 9637342Abstract: A sheet processing apparatus is configured to press a fold line that is formed on a sheet. The sheet processing apparatus includes: a sheet supporting unit configured to support the sheet in a pressing direction for pressing the fold line; a pressing unit configured to press the fold line that is formed on the sheet that is supported by the sheet supporting unit; and a pressing-force generating unit configured to generate a pressing force for pressing the sheet supporting unit against the pressing unit at a central part in a direction along which the fold line is formed.Type: GrantFiled: April 29, 2015Date of Patent: May 2, 2017Assignee: Ricoh Company, LimitedInventors: Kenji Hari, Manabu Yamanaka, Nagayasu Yoshida
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Patent number: 9315356Abstract: According to an aspect of an embodiment, a sheet processing apparatus includes: a conveying unit configured to convey sheets; a stacking unit configured to stack the conveyed sheets to form a sheet stack; and a binding unit configured to include a pair of toothed jaw and bind the sheet stack by pressing the sheet stack between the pair of toothed jaw, wherein at least one portion of edges of the toothed jaw is rounded.Type: GrantFiled: November 6, 2013Date of Patent: April 19, 2016Assignee: Ricoh Company, Ltd.Inventors: Ryuji Yoshida, Nobuyoshi Suzuki, Shingo Matsushita, Katsuhiro Kosuge, Yuusuke Shibasaki, Wataru Takahashi, Takashi Saito, Akihiro Musha, Takuya Morinaga, Ikuhisa Okamoto, Nagayasu Yoshida, Hirotaka Hayashi
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Publication number: 20150321872Abstract: A sheet processing apparatus is configured to press a fold line that is formed on a sheet. The sheet processing apparatus includes: a sheet supporting unit configured to support the sheet in a pressing direction for pressing the fold line; a pressing unit configured to press the fold line that is formed on the sheet that is supported by the sheet supporting unit; and a pressing-force generating unit configured to generate a pressing force for pressing the sheet supporting unit against the pressing unit at a central part in a direction along which the fold line is formed.Type: ApplicationFiled: April 29, 2015Publication date: November 12, 2015Applicant: RICOH COMPANY, LIMITEDInventors: Kenji HARI, Manabu YAMANAKA, Nagayasu YOSHIDA
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Publication number: 20140138896Abstract: According to an aspect of an embodiment, a sheet processing apparatus includes: a conveying unit configured to convey sheets; a stacking unit configured to stack the conveyed sheets to form a sheet stack; and a binding unit configured to include a pair of toothed jaw and bind the sheet stack by pressing the sheet stack between the pair of toothed jaw, wherein at least one portion of edges of the toothed jaw is rounded.Type: ApplicationFiled: November 6, 2013Publication date: May 22, 2014Applicant: Ricoh Company, LimitedInventors: Ryuji YOSHIDA, Nobuyoshi SUZUKI, Shingo MATSUSHITA, Katsuhiro KOSUGE, Yuusuke SHIBASAKI, Wataru TAKAHASHI, Takashi SAITO, Akihiro MUSHA, Takuya MORINAGA, Ikuhisa OKAMOTO, Nagayasu YOSHIDA, Hirotaka HAYASHI