Patents by Inventor Takeshi Akai
Takeshi Akai 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: 20230302828Abstract: A droplet discharge device for discharging a droplet into recess parts of a storage vessel includes a storage vessel, a discharge head configured to insert a discharge surface into a recess part and discharge droplets while moving in two horizontal directions, a mounting table, a vertical position adjusting part configured to change a relative vertical position between the head and table, a vertical position adjustment control part configured to control the adjusting part, a horizontal position detecting part configured to detect a horizontal position of the storage vessel, and a target position detecting part configured to detect, before starting discharge, a distance from a vertical reference height to a discharge target surface, wherein the control part controls, based on the detected distance, the vertical position of the head or table during the discharge such that a discharge height of the discharge surface relative to the discharge target surface stays constant.Type: ApplicationFiled: March 3, 2023Publication date: September 28, 2023Applicant: Ricoh Company, Ltd.Inventors: Takeshi AKAI, Yu YAMAYA, Takahiko MATSUMOTO, Yusuke NONOYAMA, Daisuke ARAI
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Publication number: 20230211335Abstract: A droplet discharge device for discharging a droplet into one or more droplet storage parts of a storage vessel; the droplet discharge device including: a droplet discharge part configured to discharge the droplet in a predetermined amount from a nozzle hole of the droplet discharge part; a storage vessel holding part configured to hold the storage vessel; a mover part configured to move the droplet discharge part relative to the storage vessel that is held by the storage vessel holding part; and a detecting part configured to detect a shape of a surface of the storage vessel that is held by the storage vessel holding part.Type: ApplicationFiled: December 27, 2022Publication date: July 6, 2023Applicant: Ricoh Company, Ltd.Inventors: Daisuke ARAI, Takahiko MATSUMOTO, Yusuke NONOYAMA, Takeshi AKAI
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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: 11097544Abstract: Provided is a liquid discharging head including: a membranous member including a discharging port through which a liquid is discharged; and a displacement member disposed at membranous member's one side at which the liquid to be discharged through the discharging port is provided and configured to displace a position of the membranous member to cause the liquid to be discharged through the discharging port.Type: GrantFiled: November 4, 2019Date of Patent: August 24, 2021Assignee: Ricoh Company, Ltd.Inventors: Koichi Muramatsu, Takahiko Matsumoto, Shinnosuke Koshizuka, Satoshi Okano, Satoshi Nakazawa, Yuzuru Kuramochi, Ryuya Mashiko, Takeshi Akai, Daisuke Takagi, Tomoaki Nakayama, Hidekazu Yaginuma, Hiroshi Fujie, Manabu Yamanaka
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Patent number: 11001072Abstract: Liquid discharge head comprising: liquid discharge unit, which includes discharge port, liquid retaining section configured to retain liquid to be discharged from the discharge port, and displacement section configured to discharge the liquid retained within the liquid retaining section from the discharge port; a pair of liquid storage sections, which are configured to store the liquid and are each connected to the liquid retaining section in the liquid discharge unit so that the liquid can flow; a pair of liquid feeding sections that are connected to the pair of liquid storage sections and are configured to feed the liquid between the liquid storage section and the liquid retaining section; and a pair of open and close sections that are each disposed at flow path between the liquid feeding section and the liquid storage section and are configured to open and close the flow path.Type: GrantFiled: November 12, 2019Date of Patent: May 11, 2021Assignee: Ricoh Company, Ltd.Inventors: Manabu Yamanaka, Daisuke Takagi, Shinnosuke Koshizuka, Hiroshi Fujie, Takeshi Akai, Yu Yamaya, Youhei Niitsuma
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Patent number: 10807372Abstract: Provided is a liquid droplet discharging unit including a liquid droplet discharging port, a liquid retaining section including the liquid droplet discharging port, two tubes disposed in communication with the liquid retaining section, and first and second liquid sucking/ejecting members coupled to the two tubes respectively, wherein while the first liquid sucking/ejecting member is in a sucking or ejecting state, the second liquid sucking/ejecting member is in a non-sucking or non-ejecting state correspondingly.Type: GrantFiled: January 3, 2019Date of Patent: October 20, 2020Assignee: Ricoh Company, Ltd.Inventors: Takeshi Akai, Hiroshi Fujie, Keisuke Sugiyama, Daisuke Takagi, Hiroki Somada, Manabu Yamanaka
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Publication number: 20200207112Abstract: Liquid discharge head comprising: liquid discharge unit, which includes discharge port, liquid retaining section configured to retain liquid to be discharged from the discharge port, and displacement section configured to discharge the liquid retained within the liquid retaining section from the discharge port; a pair of liquid storage sections, which are configured to store the liquid and are each connected to the liquid retaining section in the liquid discharge unit so that the liquid can flow; a pair of liquid feeding sections that are connected to the pair of liquid storage sections and are configured to feed the liquid between the liquid storage section and the liquid retaining section; and a pair of open and close sections that are each disposed at flow path between the liquid feeding section and the liquid storage section and are configured to open and close the flow path.Type: ApplicationFiled: November 12, 2019Publication date: July 2, 2020Inventors: Manabu YAMANAKA, Daisuke TAKAGI, Shinnosuke KOSHIZUKA, Hiroshi FUJIE, Takeshi AKAI, Yu YAMAYA, Youhei NIITSUMA
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Publication number: 20200139704Abstract: Provided is a liquid discharging head including: a membranous member including a discharging port through which a liquid is discharged; and a displacement member disposed at membranous member's one side at which the liquid to be discharged through the discharging port is provided and configured to displace a position of the membranous member to cause the liquid to be discharged through the discharging port.Type: ApplicationFiled: November 4, 2019Publication date: May 7, 2020Inventors: Koichi Muramatsu, Takahiko Matsumoto, Shinnosuke Koshizuka, Satoshi Okano, Satoshi Nakazawa, Yuzuru Kuramochi, Ryuya Mashiko, Takeshi Akai, Daisuke Takagi, Tomoaki Nakayama, Hidekazu Yaginuma, Hiroshi Fujie, Manabu Yamanaka
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Patent number: 10513404Abstract: A sheet-material supply device includes a lift, a sheet-material detector, and a sheet-material retaining conveyor. The lift elevates sheet materials in a stacked state. The sheet-material detector detects that an uppermost sheet material of the sheet materials in the stacked state has reached a predetermined height. The sheet-material retaining conveyor retains and conveys the uppermost sheet material that has reached the predetermined height. The sheet-material supply device stops elevation of the sheet materials in the stacked state when the sheet-material detector detects that the uppermost sheet material has reached the predetermined height. The sheet-material retaining conveyor is disposed to be movable in a direction in which the sheet materials in the stacked state elevate.Type: GrantFiled: December 9, 2016Date of Patent: December 24, 2019Assignee: RICOH COMPANY, LTD.Inventors: Takeshi Akai, Hidehiko Fujiwara, Yasuo Niikura, Yousuke Edo, Satoru Takano, Yasunori Hino, Tadashi Matsuoka, Atsunori Yoshida, Ryo Kanno, Hikaru Fukasawa
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Sheet-member separation device, sheet-member separation method, program, and image forming apparatus
Patent number: 10384897Abstract: A sheet-member separation device includes a first air blower, an attractor, a conveyor, a second air blower, and an adjuster. The first air blower blows air onto a front side of a stack of sheet members in a sheet-member conveyance direction. The attractor attracts an uppermost sheet member floated from the stack of sheet members by the air blown from the first air blower. The conveyor conveys, in the sheet-member conveyance direction, the sheet member attracted by the attractor. The second air blower blows air toward a lateral side of the sheet member. The adjuster moves the second air blower and the attractor together to adjust positions of the second air blower and the attractor in the sheet-member conveyance direction.Type: GrantFiled: December 13, 2016Date of Patent: August 20, 2019Assignee: Ricoh Company, Ltd.Inventors: Satoru Takano, Hidehiko Fujiwara, Takeshi Akai, Yasuo Niikura, Yousuke Edo, Yasunori Hino, Tadashi Matsuoka, Atsunori Yoshida, Ryo Kanno, Hikaru Fukasawa -
Publication number: 20190232661Abstract: Provided is a liquid droplet discharging unit including a liquid droplet discharging port, a liquid retaining section including the liquid droplet discharging port, two tubes disposed in communication with the liquid retaining section, and first and second liquid sucking/ejecting members coupled to the two tubes respectively, wherein while the first liquid sucking/ejecting member is in a sucking or ejecting state, the second liquid sucking/ejecting member is in a non-sucking or non-ejecting state correspondingly.Type: ApplicationFiled: January 3, 2019Publication date: August 1, 2019Inventors: Takeshi AKAI, Hiroshi Fujie, Keisuke Sugiyama, Daisuke Takagi, Hiroki Somada, Manabu Yamanaka
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Patent number: 10097720Abstract: A sound absorber, which is included in a sheet feeder included in an image reading device, an image forming apparatus, and an electronic device, includes a cavity, a communication portion through which the cavity communicates with an outside of a sheet feeder, and a communication direction changing device configured to change a communication direction of the communicating portion.Type: GrantFiled: December 19, 2016Date of Patent: October 9, 2018Assignee: Ricoh Company, Ltd.Inventors: Takaya Ochiai, Takeshi Akai, Ikuhisa Okamoto, Takehisa Shimazu, Youhei Niitsuma
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Patent number: 10065824Abstract: A stacking apparatus includes a conveyance unit, a stacking unit, and a separation member supply unit. The conveyance unit conveys sheets for circuit board. The stacking unit stacks the sheets. The separation member supply unit supplies a separation member to separate the stacked sheets at any position. The separation member supply unit places the separation member on the sheet in being conveyed.Type: GrantFiled: December 9, 2016Date of Patent: September 4, 2018Assignee: Ricoh Company, Ltd.Inventors: Yousuke Edo, Yasufumi Takahashi, Yasuo Niikura, Satoru Takano, Hidehiko Fujiwara, Takeshi Akai, Yasunori Hino, Tadashi Matsuoka, Atsunori Yoshida, Ryo Kanno, Hikaru Fukasawa, Hiroshi Komuro, Masaru Yamagishi, Toshihiro Shimada, Satoshi Aizawa, Kenji Ishii
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Patent number: 9950886Abstract: A sheet conveying device, which is included in an image reading device and an image forming apparatus, includes a passage forming body and a sound absorber. The passage forming body is configured to define a sheet conveying passage through which a sheet passes. The sound absorber includes a hollow portion and a communication portion configured to communication the hollow portion and the sheet conveying passage. A position of the communication portion of the sound absorber is changeable in the sheet conveying passage. The sheet conveying device included in the image reading device includes an original document conveying device configured to convey an original document having an image on a surface. The sheet conveying device included in the image forming apparatus includes a recording medium conveying device configured to convey the recording medium accommodated in a recording medium container to the image forming device.Type: GrantFiled: February 24, 2017Date of Patent: April 24, 2018Assignee: RICOH COMPANY, LTD.Inventors: Takehisa Shimazu, Takeshi Akai, Keisuke Sugiyama, Takaya Ochiai
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Patent number: 9938099Abstract: A sheet conveying device includes a conveyer to convey a sheet and a primary sheet guide, disposed downstream from the conveyer in a sheet conveyance direction, to guide the sheet conveyed by the conveyer in the sheet conveyance direction. A secondary sheet guide is disposed opposite the primary sheet guide and includes a bending portion to bend the sheet while the sheet slides over the bending portion to change the sheet conveyance direction. A sheet conveyance path is defined by the primary sheet guide and the secondary sheet guide. The primary sheet guide includes a cavity disposed opposite the sheet conveyance path and a communication through-hole communicating with the cavity and the sheet conveyance path. The communication through-hole is disposed opposite the bending portion in a direction perpendicular to the sheet conveyance direction.Type: GrantFiled: September 7, 2016Date of Patent: April 10, 2018Assignee: RICOH COMPANY, LTD.Inventors: Takeshi Akai, Ikuhisa Okamoto, Takehisa Shimazu, Youhei Niitsuma, Takaya Ochiai
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Patent number: 9834398Abstract: A sheet conveying device includes a primary sheet guide including a bending portion to bend a sheet while the sheet slides over the bending portion to change a sheet conveyance direction and a secondary sheet guide disposed opposite the primary sheet guide with an interval between the primary sheet guide and the secondary sheet guide. A noise attenuator intakes and attenuates slide noise generated by the bending portion while the sheet slides over the bending portion. The noise attenuator includes a resonant cavity disposed opposite an outer face of one of the primary sheet guide and the secondary sheet guide. A sound inlet is disposed in proximity to the bending portion and intakes the slide noise generated by the bending portion. A sound guide communicates with the sound inlet and the resonant cavity to guide the slide noise from the sound inlet to the resonant cavity.Type: GrantFiled: September 27, 2016Date of Patent: December 5, 2017Assignee: Ricoh Company, Ltd.Inventors: Youhei Niitsuma, Takeshi Akai, Ikuhisa Okamoto, Takehisa Shimazu, Takaya Ochiai
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Publication number: 20170260015Abstract: A sheet conveying device, which is included in an image reading device and an image forming apparatus, includes a passage forming body and a sound absorber. The passage forming body is configured to define a sheet conveying passage through which a sheet passes. The sound absorber includes a hollow portion and a communication portion configured to communication the hollow portion and the sheet conveying passage. A position of the communication portion of the sound absorber is changeable in the sheet conveying passage. The sheet conveying device included in the image reading device includes an original document conveying device configured to convey an original document having an image on a surface. The sheet conveying device included in the image forming apparatus includes a recording medium conveying device configured to convey the recording medium accommodated in a recording medium container to the image forming device.Type: ApplicationFiled: February 24, 2017Publication date: September 14, 2017Applicant: Ricoh Company, Ltd.Inventors: Takehisa SHIMAZU, Takeshi AKAI, Keisuke SUGIYAMA, Takaya OCHIAI
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Publication number: 20170174453Abstract: A sheet-material supply device includes a lift, a sheet-material detector, and a sheet-material retaining conveyor. The lift elevates sheet materials in a stacked state. The sheet-material detector detects that an uppermost sheet material of the sheet materials in the stacked state has reached a predetermined height. The sheet-material retaining conveyor retains and conveys the uppermost sheet material that has reached the predetermined height. The sheet-material supply device stops elevation of the sheet materials in the stacked state when the sheet-material detector detects that the uppermost sheet material has reached the predetermined height. The sheet-material retaining conveyor is disposed to be movable in a direction in which the sheet materials in the stacked state elevate.Type: ApplicationFiled: December 9, 2016Publication date: June 22, 2017Inventors: Takeshi AKAI, Hidehiko FUJIWARA, Yasuo NIIKURA, Yousuke EDO, Satoru TAKANO, Yasunori HINO, Tadashi MATSUOKA, Atsunori YOSHIDA, Ryo KANNO, Hikaru FUKASAWA
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Publication number: 20170174462Abstract: A stacking apparatus includes a conveyance unit, a stacking unit, and a separation member supply unit. The conveyance unit conveys sheets for circuit board. The stacking unit stacks the sheets. The separation member supply unit supplies a separation member to separate the stacked sheets at any position. The separation member supply unit places the separation member on the sheet in being conveyed.Type: ApplicationFiled: December 9, 2016Publication date: June 22, 2017Inventors: Yousuke EDO, Yasufumi TAKAHASHI, Yasuo NIIKURA, Satoru TAKANO, Hidehiko FUJIWARA, Takeshi AKAI, Yasunori HINO, Tadashi MATSUOKA, Atsunori YOSHIDA, Ryo KANNO, Hikaru FUKASAWA, Hiroshi KOMURO, Masaru YAMAGISHI, Toshihiro SHIMADA, Satoshi AIZAWA, Kenji ISHII
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Publication number: 20170180586Abstract: A sound absorber, which is included in a sheet feeder included in an image reading device, an image forming apparatus, and an electronic device, includes a cavity, a communication portion through which the cavity communicates with an outside of a sheet feeder, and a communication direction changing device configured to change a communication direction of the communicating portion.Type: ApplicationFiled: December 19, 2016Publication date: June 22, 2017Applicant: Ricoh Company, Ltd.Inventors: Takaya Ochiai, Takeshi Akai, Ikuhisa Okamoto, Takehisa Shimazu, Youhei Niitsuma