Patents by Inventor Ruki Midorikawa
Ruki Midorikawa 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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Publication number: 20240253341Abstract: A sheet processing system includes a sheet processing device and a lamination processing device. The sheet processing device includes a sheet separator that separates a two-ply sheet and inserts an inner sheet between the two-ply sheet to form a first enclosed two-ply sheet. The lamination processing device bonds the first enclosed two-ply sheet, and bonds a second enclosed two-ply sheet in which the inner sheet is inserted outside the sheet separator. The sheet processing system includes a relay conveyor that conveys the first enclosed two-ply sheet from the sheet separator to the lamination processing device attachable to a sheet feeder to directly feed the second enclosed two-ply sheet to the lamination processing device. The sheet processing device includes a cord holder to hold the power cord of the lamination processing device at a position where feeding and ejecting the two-ply sheet after bonding the two-ply sheet are not hindered.Type: ApplicationFiled: January 18, 2024Publication date: August 1, 2024Applicant: Ricoh Company, Ltd.Inventors: Kazuki SHIMODATE, Naoki TAKAI, Yuichiro KATO, Sho ASANO, Ruki MIDORIKAWA, Yosuke SAITO
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Publication number: 20240246329Abstract: A sheet separation device for separating two sheets of a two-ply sheet, in which the two sheets are overlapped and a part of the two sheets are joined, and inserting at least one sheet medium between the two sheets includes an upper surface, an ejection tray, and a conveyor. A lamination fixing device that laminates the two-ply sheet including the at least one sheet medium inserted between the two sheets is to be mounted on the upper surface. The ejection tray is disposed on the upper surface. The two-ply sheet laminated and ejected from an ejection port of the lamination fixing device is to be stacked on the ejection tray. The conveyor is coupled to the lamination fixing device to convey the two-ply sheet including the at least one sheet medium from the sheet separation device to the lamination fixing device.Type: ApplicationFiled: January 22, 2024Publication date: July 25, 2024Applicant: Ricoh Company, Ltd.Inventors: Naoki TAKAI, Ruki MIDORIKAWA, Kazuki SHIMODATE, Yuichiro KATO, Sho ASANO, Yosuke SAITO
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Publication number: 20240239092Abstract: A lamination processing system includes a sheet separation device, a lamination fixing device, and a conveyor. The sheet separation device separates a two-ply sheet to insert a sheet medium between two sheets of the two-ply sheet to form an enclosed two-ply sheet. The lamination fixing device includes an inlet port and a heater. The conveyor conveys the enclosed two-ply sheet from the sheet separation device to the lamination fixing device in a conveyance direction. The conveyor includes a conveyance passage and a guide. The conveyance passage guides the enclosed two-ply sheet from the sheet separation device toward the lamination fixing device. The guide guides the enclosed two-ply sheet to the inlet port. The guide forms a space accommodatable a deflected part of the enclosed two-ply sheet formed by a difference in a conveyance speed of the enclosed two-ply sheet between the sheet separation device and the lamination fixing device.Type: ApplicationFiled: December 8, 2023Publication date: July 18, 2024Applicant: Ricoh Company, Ltd.Inventors: Yosuke SAITO, Yuichiro KATO, Sho ASANO, Ruki MIDORIKAWA, Naoki TAKAI, Kazuki SHIMODATE
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Publication number: 20240190121Abstract: A laminating system sandwiches a sheet medium in a two-ply sheet in which two sheets are overlapped and partially joined together and applies heat and pressure to bond the two-ply sheet. The laminating system includes a sheet separating device, a laminate-fixing device, and a conveyor. The sheet separating device separates the two sheets of the two-ply sheet and sandwiches the sheet medium between the two sheets. The laminate-fixing device heats and presses the two-ply sheet sandwiching the sheet medium. The conveyor conveys the two-ply sheet sandwiching the sheet medium from the sheet separating device to the laminate-fixing device. The laminate-fixing device is disposed above the sheet separating device.Type: ApplicationFiled: December 4, 2023Publication date: June 13, 2024Applicant: Ricoh Company, Ltd.Inventors: Ruki MIDORIKAWA, Kazuki SHIMODATE, Yuichiro KATO, Naoki TAKAI, Sho ASANO, Yosuke SAITO
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Patent number: 11926133Abstract: A sheet laminator includes a sheet lamination device, a heater, and circuitry. The sheet lamination device performs a sheet laminating operation on an object by application of heat and pressure. The heater heats the sheet lamination device. The circuitry changes between a first mode in which the heater constantly heats the sheet lamination device while the sheet lamination device is turned on and a second mode in which the heater starts heating the sheet lamination device in response to a request of the sheet laminating operation and stops heating the sheet lamination device after a given time has elapsed from completion of the sheet laminating operation. The circuitry adjusts the given time in the second mode.Type: GrantFiled: October 19, 2022Date of Patent: March 12, 2024Assignee: RICOH COMPANY, LTD.Inventors: Shinya Monma, Keisuke Sugiyama, Tomohiro Furuhashi, Wataru Takahashi, Ruki Midorikawa, Sho Asano
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Patent number: 11886143Abstract: A sheet laminator laminates a two-ply sheet and a sheet-shaped medium inserted in the two-ply sheet. The sheet laminator includes a sheet feeder, a multi-feeding detector, a fixing device, an ejection device, a purging portion, a passage switcher, and circuitry. The sheet feeder feeds the two-ply sheet. The multi-feeding detector detects multiple feeding of the two-ply sheet. The fixing device fixes the two-ply sheet by application of heat and pressure. The ejection device ejects the two-ply sheet that has been fixed by the fixing device. The purging portion is disposed at a position different from the ejection device. The passage switcher switches a conveyance passage of the two-ply sheet to the fixing device or to the purging portion. The circuitry conveys the two-ply sheet to the purging portion and retries sheet feeding with another two-ply sheet, in response to detection of multiple feeding of the two-ply sheet.Type: GrantFiled: December 2, 2022Date of Patent: January 30, 2024Assignee: Ricoh Company, Ltd.Inventors: Keisuke Sugiyama, Tomohiro Furuhashi, Wataru Takahashi, Ruki Midorikawa, Shinya Monma, Sho Asano
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Patent number: 11753266Abstract: A sheet stacking device includes a stacker, a detector, a blower, and a moving device. A sheet is stacked on the stacker. The detector detects a stacking amount of the sheet on the stacker. The blower blows air to the sheet stacked on the stacker. The moving device moves the blower with respect to the stacker based on the stacking amount of the sheet detected by the detector.Type: GrantFiled: December 23, 2020Date of Patent: September 12, 2023Assignee: Ricoh Company, Ltd.Inventor: Ruki Midorikawa
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Publication number: 20230221672Abstract: A sheet laminator laminates a two-ply sheet and a sheet-shaped medium inserted in the two-ply sheet. The sheet laminator includes a sheet feeder, a multi-feeding detector, a fixing device, an ejection device, a purging portion, a passage switcher, and circuitry. The sheet feeder feeds the two-ply sheet. The multi-feeding detector detects multiple feeding of the two-ply sheet. The fixing device fixes the two-ply sheet by application of heat and pressure. The ejection device ejects the two-ply sheet that has been fixed by the fixing device. The purging portion is disposed at a position different from the ejection device. The passage switcher switches a conveyance passage of the two-ply sheet to the fixing device or to the purging portion. The circuitry conveys the two-ply sheet to the purging portion and retries sheet feeding with another two-ply sheet, in response to detection of multiple feeding of the two-ply sheet.Type: ApplicationFiled: December 2, 2022Publication date: July 13, 2023Applicant: Ricoh Company, Ltd.Inventors: Keisuke SUGIYAMA, Tomohiro FURUHASHI, Wataru TAKAHASHI, Ruki MIDORIKAWA, Shinya MONMA, Sho ASANO
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Publication number: 20230202159Abstract: A sheet laminator includes a sheet lamination device, a heater, and circuitry. The sheet lamination device performs a sheet laminating operation on an object by application of heat and pressure. The heater heats the sheet lamination device. The circuitry changes between a first mode in which the heater constantly heats the sheet lamination device while the sheet lamination device is turned on and a second mode in which the heater starts heating the sheet lamination device in response to a request of the sheet laminating operation and stops heating the sheet lamination device after a given time has elapsed from completion of the sheet laminating operation. The circuitry adjusts the given time in the second mode.Type: ApplicationFiled: October 19, 2022Publication date: June 29, 2023Applicant: Ricoh Company, Ltd.Inventors: Shinya MONMA, Keisuke SUGIYAMA, Tomohiro FURUHASHI, Wataru TAKAHASHI, Ruki MIDORIKAWA, Sho ASANO
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Publication number: 20230202780Abstract: A sheet separation device includes a sheet separator and a conveyor. The sheet separator separates a non-bonding portion of a two-ply sheet in which two sheets are overlapped and bonded together at a bonding portion of the two-ply sheet. The conveyor conveys the two-ply sheet toward the sheet separator while bending the two-ply sheet in a direction that intersects a conveyance direction of the two-ply sheet.Type: ApplicationFiled: November 30, 2022Publication date: June 29, 2023Applicant: Ricoh Company, Ltd.Inventors: Wataru TAKAHASHI, Tomohiro FURUHASHI, Keisuke SUGIYAMA, Ruki MIDORIKAWA, Shinya MONMA, Sho ASANO
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Publication number: 20230202790Abstract: A sheet stacker for use in a device including a stacker portion, a fence, and a guide face. The stacker portion includes a stacker face that is inclined at a predetermined angle with respect to a horizontal plane and receives a plurality of sheets ejected from above and stack the plurality of sheets on the stacker face. The fence includes an angled face to contact an end of the plurality of sheets stacked on the stacker face. The angled face rises in a direction in which the plurality of sheets is stacked, with respect to a lower side of the stacker face. The guide face guides the sheet conveyed along the lower side toward an outlet port to a lower end of the outlet port, the outlet port opening in an exterior of the device to remove the sheet to an outside of the device.Type: ApplicationFiled: October 27, 2022Publication date: June 29, 2023Applicant: Ricoh Company, Ltd.Inventors: Sho ASANO, Keisuke SUGIYAMA, Tomohiro FURUHASHI, Wataru TAKAHASHI, Ruki MIDORIKAWA, Shinya MONMA
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Patent number: 11599053Abstract: A sheet conveying device includes a first duct, a second duct, and a switching member. The first duct is disposed at a first side of a sheet conveyance passage to face a first face of a sheet passing the sheet conveyance passage and has a first air blowing port through which air is blown toward the sheet conveyance passage. The second duct is disposed at a second side of the sheet conveyance passage to face a second face of the sheet passing the sheet conveyance passage and has a second air blowing port through which air is blown toward the sheet conveyance passage. The switching member is disposed downstream from the first and second air blowing ports in a sheet conveyance direction and configured to switch the sheet conveyance passage. No pair of rollers is disposed between the switching member and each of the first and second blowing ports.Type: GrantFiled: May 19, 2020Date of Patent: March 7, 2023Assignee: Ricoh Company, Ltd.Inventor: Ruki Midorikawa
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Publication number: 20220368869Abstract: An image projector includes a projecting section, a support section, an exterior section, a first heat conductor, and a second heat conductor. The projecting section projects an image, and includes an image forming section that forms the image. The support section supports the projecting section, and includes a projecting section placement face on which the projecting section is disposed. The exterior section covers the projecting section and the support section. The first heat conductor is disposed between the projecting section and the support section. The second heat conductor is disposed between the support section and the exterior section. The first heat conductor is disposed so as to at least partially overlap the image forming section in a plan view of the projecting section placement face.Type: ApplicationFiled: April 29, 2022Publication date: November 17, 2022Inventors: Ruki MIDORIKAWA, Tomoko TAKAHASHI, Yu YONEDA
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Publication number: 20220274405Abstract: A liquid discharge apparatus includes a liquid discharge unit. The liquid discharge unit includes a liquid chamber member defining a liquid holding portion to hold a liquid, a film having a nozzle hole from which the liquid is discharged and a surface facing the liquid holding portion, and a holder supporting the film. The surface of the film has a contact angle with water of less than 90 degrees.Type: ApplicationFiled: February 25, 2022Publication date: September 1, 2022Inventors: Ruki MIDORIKAWA, Takeshi AKAI, Yu YAMAYA, Reo MAEDA, Takahiko MATSUMOTO, Yusuke NONOYAMA, Tatsuya SAMESHIMA, Daisuke ARAI
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Patent number: 11353825Abstract: A part includes a first member and a second member including an engagement portion engaging with an engagement protrusion of the first member and restricting separation of the first member in a predetermined direction with respect to the second member. The engagement portion includes: a facing portion facing the engagement protrusion from downstream in a separating direction of the first member with respect to the second member; a first coupling portion connected to one end of the facing portion and coupling a main body of the second member and the facing portion to each other; and a second coupling portion connected to the other end of the facing portion and coupling the main body and the facing portion to each other. The second coupling portion includes an escape portion in which the engagement protrusion is movable in the separating direction and an orthogonal direction to the separating direction.Type: GrantFiled: October 21, 2020Date of Patent: June 7, 2022Assignee: RICOH COMPANY, LTD.Inventor: Ruki Midorikawa
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Patent number: 11269285Abstract: A wiring holder includes a first member and a second member attached to the first member. The first member and the second member are configured to hold an electric wire. At least one of the first member and the second member includes a connector cover portion configured to cover a connector at one end of the electric wire.Type: GrantFiled: February 11, 2021Date of Patent: March 8, 2022Assignee: Ricoh Company, Ltd.Inventor: Ruki Midorikawa
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Publication number: 20210255577Abstract: A wiring holder includes a first member and a second member attached to the first member. The first member and the second member are configured to hold an electric wire. At least one of the first member and the second member includes a connector cover portion configured to cover a connector at one end of the electric wire.Type: ApplicationFiled: February 11, 2021Publication date: August 19, 2021Applicant: Ricoh Company, Ltd.Inventor: Ruki MIDORIKAWA
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Publication number: 20210149336Abstract: A part includes a first member and a second member including an engagement portion engaging with an engagement protrusion of the first member and restricting separation of the first member in a predetermined direction with respect to the second member. The engagement portion includes: a facing portion facing the engagement protrusion from downstream in a separating direction of the first member with respect to the second member; a first coupling portion connected to one end of the facing portion and coupling a main body of the second member and the facing portion to each other; and a second coupling portion connected to the other end of the facing portion and coupling the main body and the facing portion to each other. The second coupling portion includes an escape portion in which the engagement protrusion is movable in the separating direction and an orthogonal direction to the separating direction.Type: ApplicationFiled: October 21, 2020Publication date: May 20, 2021Applicant: Ricoh Company, Ltd.Inventor: Ruki MIDORIKAWA
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Publication number: 20210107758Abstract: A sheet stacking device includes a stacker, a detector, a blower, and a moving device. A sheet is stacked on the stacker. The detector detects a stacking amount of the sheet on the stacker. The blower blows air to the sheet stacked on the stacker. The moving device moves the blower with respect to the stacker based on the stacking amount of the sheet detected by the detector.Type: ApplicationFiled: December 23, 2020Publication date: April 15, 2021Applicant: Ricoh Company, Ltd.Inventor: Ruki MIDORIKAWA
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Patent number: 10906765Abstract: A sheet stacking device includes a stacker, a detector, a blower, and a moving device. A sheet is stacked on the stacker. The detector detects a stacking amount of the sheet on the stacker. The blower blows air to the sheet stacked on the stacker. The moving device moves the blower with respect to the stacker based on the stacking amount of the sheet detected by the detector.Type: GrantFiled: January 22, 2019Date of Patent: February 2, 2021Assignee: RICOH COMPANY, LTD.Inventor: Ruki Midorikawa