Patents by Inventor Kazuya Tsutsui
Kazuya Tsutsui 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: 7744085Abstract: An image forming apparatus may include an image forming mechanism configured to form an image and transfer the image on a sheet member, and/or a sheet processing unit. The sheet processing unit may include a sheet aligning unit, an ejection sheet tray configured to stack the sheet member, a sheet stopper configured to align the sheet member at a trailing edge thereof, a return mechanism configured to return the sheet member stacked on the ejection sheet tray to the sheet stopper, and/or a discharging mechanism configured to discharge the sheet member, aligned by the return mechanism, from the sheet stopper to the ejection sheet tray. The sheet aligning unit may include a stacking mechanism configured to stack the sheet member transferred into the sheet aligning unit and/or a sheet aligning mechanism configured to align the sheet member.Type: GrantFiled: September 15, 2006Date of Patent: June 29, 2010Assignee: Ricoh Co., Ltd.Inventors: Kazuya Tsutsui, Shingo Matsushita, Tamaki Kaneko
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Patent number: 7681873Abstract: The present invention provides a sheet processing apparatus, such as a finisher or sorter, for implementing predetermined processing such as alignment and stapling on an inserted sheet material (i.e. any sheet-form recording medium such as recording paper, transfer paper, or an OHP sheet), and an image forming apparatus comprising the sheet processing apparatus. The sheet processing apparatus comprises a rear end fence horizontal portion that contacts the end portion of the sheet member on the upstream side of a sheet member conveyance direction during alignment of the sheet member, a rear end fence vertical portion for supporting the other parts of the sheet member, and a staple unit for stapling the sheet member. The stapling direction in which a staple is punched by a stapler of the staple unit is set to be parallel to the rear end fence horizontal portion that contacts the rear end portion of the sheet member.Type: GrantFiled: December 6, 2006Date of Patent: March 23, 2010Assignee: Ricoh Co., Ltd.Inventors: Kazuya Tsutsui, Shingo Matsushita, Tamaki Kaneko
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Patent number: 7661667Abstract: A sheet feeding device includes a conveyor belt having a first row of a plurality of convex portions intermittently arranged on an inner circumferential surface of the conveyor belt in a sheet conveying direction. The sheet feeding device further includes a plurality of rollers around which the conveyor belt is spanned such that a direction substantially perpendicular to the sheet conveying direction is parallel to an axial direction of each of the rollers. The rollers include concave portions on outer circumferential surfaces thereof, in which the convex portions of the first row of the conveyor belt are engaged. The concave portion of at least one roller of the plurality of rollers has a width different from a width of each of the plurality of rollers other than the at least one roller.Type: GrantFiled: May 9, 2005Date of Patent: February 16, 2010Assignee: Ricoh Co., Ltd.Inventor: Kazuya Tsutsui
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Patent number: 7451980Abstract: To ensure that the leading edge of the sheet ejected onto a tray 12 does not push and move loaded sheets in advance, loaded sheets are retained at position (II) by a retaining roller. A roller (returning roller in this case) 121 for applying external force to a sheet S ejected onto the tray 12 and moving the sheet toward a end face 131 for alignment is displaced to a different position in the direction of ejection “a”, thereby firmly gripping the trailing edge of the sheet S ejected on the tray 12.Type: GrantFiled: January 12, 2007Date of Patent: November 18, 2008Assignee: Ricoh Company, Ltd.Inventors: Masahiro Tamura, Shuuya Nagasako, Akihito Andoh, Kazuya Tsutsui
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Patent number: 7441771Abstract: To ensure that the leading edge of the sheet ejected onto a tray 12 does not push and move loaded sheets in advance, loaded sheets are retained at position (II) by a retaining roller. A roller (returning roller in this case) 121 for applying external force to a sheet S ejected onto the tray 12 and moving the sheet toward a end face 131 for alignment is displaced to a different position in the direction of ejection “a”, thereby firmly gripping the trailing edge of the sheet S ejected on the tray 12.Type: GrantFiled: January 12, 2007Date of Patent: October 28, 2008Assignee: Ricoh Company, Ltd.Inventors: Masahiro Tamura, Shuuya Nagasako, Akihito Andoh, Kazuya Tsutsui
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Patent number: 7380786Abstract: To ensure that the leading edge of the sheet ejected onto a tray 12 does not push and move loaded sheets in advance, loaded sheets are retained at position (II) by a retaining roller. A roller (returning roller in this case) 121 for applying external force to a sheet S ejected onto the tray 12 and moving the sheet toward a end face 131 for alignment is displaced to a different position in the direction of ejection “a”, thereby firmly gripping the trailing edge of the sheet S ejected on the tray 12.Type: GrantFiled: January 12, 2007Date of Patent: June 3, 2008Assignee: Ricoh Company, Ltd.Inventors: Masahiro Tamura, Shuuya Nagasako, Akihito Andoh, Kazuya Tsutsui
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Patent number: 7300052Abstract: A sheet-shaped medium processing apparatus of the present invention is provided with a pair of arranging members 102a, 102b, and these arranging members 102a, 102b have both arranging function for arranging paper S piled on a tray 12 after being discharged in a discharge direction “a” from a paper discharge roller 3 at only fixed position, and sorting/arranging function for arranging the papers S grouped together at different position in direction (direction perpendicular to paper face) perpendicular to the discharge direction “a” in every copy of grouping together predetermined number of the paper S. For that reason, it is possible to conduct sorting/arranging action by using small drive power and to arrange the paper S in high precision regardless of largeness of piled amount of the paper S on the tray 12.Type: GrantFiled: March 24, 2005Date of Patent: November 27, 2007Assignee: Ricoh Company, Ltd.Inventors: Masahiro Tamura, Akihito Andoh, Shuuya Nagasako, Kazuya Tsutsui
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Publication number: 20070145675Abstract: To ensure that the leading edge of the sheet ejected onto a tray 12 does not push and move loaded sheets in advance, loaded sheets are retained at position (II) by a retaining roller. A roller (returning roller in this case) 121 for applying external force to a sheet S ejected onto the tray 12 and moving the sheet toward a end face 131 for alignment is displaced to a different position in the direction of ejection “a”, thereby firmly gripping the trailing edge of the sheet S ejected on the tray 12.Type: ApplicationFiled: January 12, 2007Publication date: June 28, 2007Inventors: Masahiro Tamura, Shuuya Nagasako, Akihito Andoh, Kazuya Tsutsui
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Publication number: 20070138730Abstract: The present invention provides a sheet processing apparatus, such as a finisher or sorter, for implementing predetermined processing such as alignment and stapling on an inserted sheet material (i.e. any sheet-form recording medium such as recording paper, transfer paper, or an OHP sheet), and an image forming apparatus comprising the sheet processing apparatus. The sheet processing apparatus comprises a rear end fence horizontal portion that contacts the end portion of the sheet member on the upstream side of a sheet member conveyance direction during alignment of the sheet member, a rear end fence vertical portion for supporting the other parts of the sheet member, and a staple unit for stapling the sheet member. The stapling direction in which a staple is punched by a stapler of the staple unit is set to be parallel to the rear end fence horizontal portion that contacts the rear end portion of the sheet member.Type: ApplicationFiled: December 6, 2006Publication date: June 21, 2007Inventors: Kazuya Tsutsui, Shingo Matsushita, Tamaki Kaneko
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Publication number: 20070108697Abstract: To ensure that the leading edge of the sheet ejected onto a tray 12 does not push and move loaded sheets in advance, loaded sheets are retained at position (II) by a retaining roller. A roller (returning roller in this case) 121 for applying external force to a sheet S ejected onto the tray 12 and moving the sheet toward a end face 131 for alignment is displaced to a different position in the direction of ejection “a”, thereby firmly gripping the trailing edge of the sheet S ejected on the tray 12.Type: ApplicationFiled: January 12, 2007Publication date: May 17, 2007Inventors: Masahiro Tamura, Shuuya Nagasako, Akihito Andoh, Kazuya Tsutsui
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Publication number: 20070108698Abstract: To ensure that the leading edge of the sheet ejected onto a tray 12 does not push and move loaded sheets in advance, loaded sheets are retained at position (II) by a retaining roller. A roller (returning roller in this case) 121 for applying external force to a sheet S ejected onto the tray 12 and moving the sheet toward a end face 131 for alignment is displaced to a different position in the direction of ejection “a”, thereby firmly gripping the trailing edge of the sheet S ejected on the tray 12.Type: ApplicationFiled: January 12, 2007Publication date: May 17, 2007Inventors: Masahiro TAMURA, Shuuya Nagasako, Akihito Andoh, Kazuya Tsutsui
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Publication number: 20070057441Abstract: An image forming apparatus may include an image forming mechanism configured to form an image and transfer the image on a sheet member, and/or a sheet processing unit. The sheet processing unit may include a sheet aligning unit, an ejection sheet tray configured to stack the sheet member, a sheet stopper configured to align the sheet member at a trailing edge thereof, a return mechanism configured to return the sheet member stacked on the ejection sheet tray to the sheet stopper, and/or a discharging mechanism configured to discharge the sheet member, aligned by the return mechanism, from the sheet stopper to the ejection sheet tray. The sheet aligning unit may include a stacking mechanism configured to stack the sheet member transferred into the sheet aligning unit and/or a sheet aligning mechanism configured to align the sheet member.Type: ApplicationFiled: September 15, 2006Publication date: March 15, 2007Inventors: Kazuya Tsutsui, Shingo Matsushita, Tamaki Kaneko
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Patent number: 7182333Abstract: To ensure that the leading edge of the sheet ejected onto a tray 12 does not push and move loaded sheets in advance, loaded sheets are retained at position (II) by a retaining roller. A roller (returning roller in this case) 121 for applying external force to a sheet S ejected onto the tray 12 and moving the sheet toward a end face 131 for alignment is displaced to a different position in the direction of ejection “a”, thereby firmly gripping the trailing edge of the sheet S ejected on the tray 12.Type: GrantFiled: October 28, 2004Date of Patent: February 27, 2007Assignee: Ricoh Company, Ltd.Inventors: Masahiro Tamura, Shuuya Nagasako, Akihito Andoh, Kazuya Tsutsui
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Patent number: 7156387Abstract: A sheet feeding apparatus includes a sheet feeding device that picks up sheets from stacked sheets and feeds the sheets one by one, a drive device that drives the sheet feeding device, first and second detecting devices that detect the fed sheet, and a control device that feeds the sheet while setting a drive amount of the drive device. The control device calculates a first drive amount of the drive device during a first interval from when the first detecting device detects the sheet to when the second detecting device detects the sheet based on information detected by the first and second detecting devices, and the control device sets a second drive amount of the drive device during a second interval from when the second detecting device detects the sheet to when the drive device is stopped based on the calculated first drive amount.Type: GrantFiled: August 26, 2003Date of Patent: January 2, 2007Assignee: Ricoh Company, Ltd.Inventors: Makoto Hidaka, Kazuya Tsutsui, Tooru Horio
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Patent number: 7014183Abstract: A sheet-shaped medium treatment apparatus is disclosed. The sheet-shaped medium treatment apparatus has returning means 121. The sheet-shaped medium treatment apparatus is movable between a home position (I) and a press/return position (II). In addition, before leading end of discharged sheet-shaped medium S1 gets contact with top surface of sheet-shaped medium S2 already piled on said piling means, the returning means 121 is situated at said press/return position (II) and acts upon said already piled sheet-shaped medium S2 to retain it in proper position, and after said discharged sheet-shaped medium S1 falls on said piling means 12, said fallen sheet-shaped medium is aligned by being collided against said vertical wall 131 by said returning action of said returning means 121, thereafter, sheet-shaped medium is arranged by said arranging action of said arranging means in the direction of piercing the paper plane.Type: GrantFiled: June 18, 2002Date of Patent: March 21, 2006Assignee: Ricoh Company, Ltd.Inventors: Masahiro Tamura, Akihito Andoh, Shuuya Nagasako, Kazuya Tsutsui
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Publication number: 20050248083Abstract: A sheet feeding device includes a conveyor belt having a first row of a plurality of convex portions intermittently arranged on an inner circumferential surface of the conveyor belt in a sheet conveying direction. The sheet feeding device further includes a plurality of rollers around which the conveyor belt is spanned such that a direction substantially perpendicular to the sheet conveying direction is parallel to an axial direction of each of the rollers. The rollers include concave portions on outer circumferential surfaces thereof, in which the convex portions of the first row of the conveyor belt are engaged. The concave portion of at least one roller of the plurality of rollers has a width different from a width of each of the plurality of rollers other than the at least one roller.Type: ApplicationFiled: May 9, 2005Publication date: November 10, 2005Inventor: Kazuya Tsutsui
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Publication number: 20050189706Abstract: A sheet-shaped medium processing apparatus of the present invention is provided with a pair of arranging members 102a, 102b, and these arranging members 102a, 102b have both arranging function for arranging paper S piled on a tray 12 after being discharged in a discharge direction “a” from a paper discharge roller 3 at only fixed position, and sorting/arranging function for arranging the papers S grouped together at different position in direction (direction perpendicular to paper face) perpendicular to the discharge direction “a” in every copy of grouping together predetermined number of the paper S. For that reason, it is possible to conduct sorting/arranging action by using small drive power and to arrange the paper S in high precision regardless of largeness of piled amount of the paper S on the tray 12.Type: ApplicationFiled: March 24, 2005Publication date: September 1, 2005Inventors: Masahiro Tamura, Akihito Andoh, Shuuya Nagasako, Kazuya Tsutsui
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Patent number: 6889974Abstract: To ensure that the leading edge of the sheet ejected onto a tray 12 does not push and move loaded sheets in advance, loaded sheets are retained at position (II) by a retaining roller. A roller (returning roller in this case) 121 for applying external force to a sheet S ejected onto the tray 12 and moving the sheet toward a end face 131 for alignment is displaced to a different position in the direction of ejection “a”, thereby firmly gripping the trailing edge of the sheet S ejected on the tray 12.Type: GrantFiled: November 30, 2001Date of Patent: May 10, 2005Assignee: Ricoh Company, Ltd.Inventors: Masahiro Tamura, Shuuya Nagasako, Akihito Andoh, Kazuya Tsutsui
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Publication number: 20050067764Abstract: To ensure that the leading edge of the sheet ejected onto a tray 12 does not push and move loaded sheets in advance, loaded sheets are retained at position (II) by a retaining roller. A roller (returning roller in this case) 121 for applying external force to a sheet S ejected onto the tray 12 and moving the sheet toward a end face 131 for alignment is displaced to a different position in the direction of ejection “a”, thereby firmly gripping the trailing edge of the sheet S ejected on the tray 12.Type: ApplicationFiled: October 28, 2004Publication date: March 31, 2005Inventors: Masahiro Tamura, Shuuya Nagasako, Akihito Andoh, Kazuya Tsutsui
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Patent number: 6871851Abstract: A sheet-shaped medium processing apparatus including a pair of arranging members. The arranging members have both an arranging function for arranging paper piled on a tray after being discharged in a discharge direction from a paper discharge roller at a fixed position, and a sorting/arranging function for arranging the papers grouped together at a different position in a direction perpendicular to the discharge direction for grouping together a predetermined number of papers. The apparatus arranges and sorts using low drive power and arranges the paper with high precision regardless of the amount of paper on the tray.Type: GrantFiled: December 17, 2001Date of Patent: March 29, 2005Assignee: Ricoh Company, Ltd.Inventors: Masahiro Tamura, Akihito Andoh, Shuuya Nagasako, Kazuya Tsutsui