Patents by Inventor Takuya Akiyama

Takuya Akiyama 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).

  • Patent number: 11981525
    Abstract: A sheet processing device sandwiches a sheet-shaped medium in a two-ply sheet in which two sheets are overlaid and partially bonded. The sheet processing device includes a separator, a conveyor, and a switching member. The separator separates the two sheets of the two-ply sheet. The conveyor is disposed downstream from the separator in a sheet conveyance direction and conveys the two-ply sheet. The switching member is disposed downstream from the conveyor in the sheet conveyance direction. The switching member switches a conveyance path of the two-ply sheet to convey the two-ply sheet to a fixing path on which fixing processing is performed on the two-ply sheet or a non-fixing path on which no fixing processing is performed on the two-ply sheet.
    Type: Grant
    Filed: February 18, 2022
    Date of Patent: May 14, 2024
    Assignee: RICOH COMPANY, LTD.
    Inventors: Yoshito Suzuki, Tomohiro Furuhashi, Wataru Takahashi, Sho Asano, Shinya Monma, Joji Akiyama, Wataru Nozaki, Yohsuke Haraguchi, Yuji Suzuki, Yuusuke Shibasaki, Takuya Morinaga
  • Publication number: 20240155953
    Abstract: A semiconductor device may include a first pattern including any one of a selector layer or a variable resistance layer and a middle electrode layer disposed over any one of the selector layer or the variable resistance layer; and a second pattern disposed over the first pattern and including the other one of the selector layer or the variable resistance layer, wherein a width of the second pattern may be the same as or greater than a width of the first pattern.
    Type: Application
    Filed: June 8, 2023
    Publication date: May 9, 2024
    Inventors: Cha Deok DONG, Guk Cheon KIM, Bo Kyung JUNG, Keo Rock CHOI, Kenichi YOSHINO, Kazuya SAWADA, Naoki AKIYAMA, Takuya SHIMANO
  • Publication number: 20240137607
    Abstract: A technique for transmitting or receiving an advanced digital broadcasting service more preferably is provided. One or a plurality of receivers detect a 2K broadcasting service that transmits a 2K broadcasting program by performing a frequency scan for a received broadcast wave and create a service list of the 2K broadcasting service by using information related to the detected 2K broadcasting service, the one or plurality of receivers detect, after the detection of the 2K broadcasting service, a 4K broadcasting service that transmits a 4K broadcasting program by performing a frequency scan for the broadcast wave and create a service list of the 4K broadcasting service by using information related to the detected 4K broadcasting service, and a memory stores a service list obtained by composing the created service list of the 2K broadcasting service and the created service list of the 4K broadcasting service.
    Type: Application
    Filed: January 6, 2022
    Publication date: April 25, 2024
    Inventors: Nobuo MASUOKA, Takuya SHIMIZU, Yasunobu HASHIMOTO, Kazuhiko YOSHIZAWA, Hitoshi AKIYAMA
  • Patent number: 11949940
    Abstract: A technique of transmitting or receiving an advanced digital broadcasting service more suitably is provided. As the means, a broadcast receiving apparatus for receiving a broadcasting wave, a 2K broadcasting service and a 4K broadcasting service being transmitted by the broadcasting wave, includes: a receiver configured to receive the broadcasting wave; a display; and a controller. The controller is configured to identify whether simultaneous broadcasting of a 2K broadcasting service and a 4K broadcasting service in the broadcasting wave is executed or not on a basis of control information, the control information being contained in the broadcasting wave received by the receiver.
    Type: Grant
    Filed: July 29, 2020
    Date of Patent: April 2, 2024
    Assignee: MAXELL, LTD.
    Inventors: Kazuhiko Yoshizawa, Yasunobu Hashimoto, Takuya Shimizu, Hitoshi Akiyama
  • Publication number: 20240099158
    Abstract: According to one embodiment, a magnetic memory device includes a first wiring line extending in a first direction, a second wiring line provided on an upper layer side of the first wiring line and extending in a second direction intersecting the first direction, and a memory cell provided between the first wiring line and the second wiring line and including a magnetoresistance effect element and a switching element which are stacked in a third direction intersecting the first direction and the second direction. The first wiring line includes a first conductive layer and a second conductive layer provided on the first conductive layer and formed of a material containing carbon (C).
    Type: Application
    Filed: September 13, 2023
    Publication date: March 21, 2024
    Applicant: Kioxia Corporation
    Inventors: Kenichi YOSHINO, Tadaaki OIKAWA, Kazuya SAWADA, Naoki AKIYAMA, Takuya SHIMANO, Hyungjun CHO
  • Publication number: 20240099156
    Abstract: According to one embodiment, a magnetic memory device includes an electrode, and a magnetoresistance effect element provided on the electrode. The electrode includes a first electrode portion and a second electrode portion provided between the magnetoresistance effect element and the first electrode portion and containing a metal element selected from molybdenum (Mo) and ruthenium (Ru).
    Type: Application
    Filed: September 14, 2023
    Publication date: March 21, 2024
    Applicant: Kioxia Corporation
    Inventors: Kazuya SAWADA, Toshihiko NAGASE, Kenichi YOSHINO, Hyungjun CHO, Naoki AKIYAMA, Takuya SHIMANO, Tadaaki OIKAWA
  • Publication number: 20240099021
    Abstract: According to one embodiment, a magnetic memory device includes a lower insulating layer, first and second conductive portions provided in the lower insulating layer, first and second memory cells provided on the lower insulating layer and on the respective first and second conductive portions, and each including a magnetoresistance effect element, a switching element and a bottom electrode connected to corresponding one of the first and second conductive portions. As viewed from a third direction, a width of each of the first and second conductive portions is less than a width of a corresponding bottom electrode. The lower insulating layer has a void under a region between the first and second memory cells.
    Type: Application
    Filed: September 12, 2023
    Publication date: March 21, 2024
    Applicant: Kioxia Corporation
    Inventors: Naoki AKIYAMA, Kenichi YOSHINO, Kazuya SAWADA, Hyungjun CHO, Takuya SHIMANO
  • Publication number: 20230384730
    Abstract: A powder conveying device includes a drop conveyance passage, an intersecting conveyance passage, a conveying screw, and a floating member. Powder entering from an inflow port drops in the drop conveyance passage. The intersecting conveyance passage communicates with a lower end of the drop conveyance passage and extends in an intersecting direction that intersects the drop conveyance passage. The conveying screw is disposed in the intersecting conveyance passage and rotates in a specified direction to convey the powder in the intersecting direction. The floating member is movably installed in the drop conveyance passage and floats in the drop conveyance passage to move by contact with the conveying screw. The inflow port and the floating member interfere with each other to prevent the floating member from coming out of the inflow port of the drop conveyance passage.
    Type: Application
    Filed: May 23, 2023
    Publication date: November 30, 2023
    Inventors: Kazuhiro SHIMADA, Seiichi KOGURE, Hideki KIMURA, Hiroshi KIKUCHI, Yusuke ISHIZUKA, Yutaka TAKAHASHI, Takuya AKIYAMA, Yutaka GOTO, Yuuki AOKI
  • Patent number: 11789385
    Abstract: An image forming apparatus includes an image bearer; a nip forming member configured to form a transfer nip between the image bearer and the nip forming member; a nip pressure changer configured to change a nip pressure of the transfer nip; a transfer bias applier configured to apply, to the transfer nip, a transfer bias in which an AC component is superimposed on a DC component; and a DC component adjuster configured to adjust the DC component in the transfer bias, according to the nip pressure that is changed by the nip pressure changer.
    Type: Grant
    Filed: March 29, 2022
    Date of Patent: October 17, 2023
    Assignee: Ricoh Company, Ltd.
    Inventors: Yuuki Aoki, Seiichi Kogure, Hideki Kimura, Hiroshi Kikuchi, Yutaka Takahashi, Yusuke Ishizuka, Takuya Akiyama, Yutaka Goto, Kazuhiro Shimada
  • Publication number: 20230236536
    Abstract: A cleaning blade for an intermediate transfer medium is provided. A cleaning target of the cleaning blade is an intermediate transfer medium. The cleaning blade includes an edge layer and a coating layer. The coating layer provided on a forefront end of the edge layer at which the edge layer contacts the intermediate transfer medium contains a first fluorine-based resin and a second fluorine-based resin incompatible with the first fluorine-based resin. The cleaning blade for an intermediate transfer medium has a Martens hardness of 0.5 N/mm2 or greater and 3 N/mm2 or less at a location having a distance of 20 ?m from a ridgeline of the forefront end of the edge layer.
    Type: Application
    Filed: January 19, 2023
    Publication date: July 27, 2023
    Inventors: Masahiro OHMORI, Keiichiro JURI, Takuya AKIYAMA
  • Publication number: 20230103454
    Abstract: A transfer device includes a transfer roller and a transfer counter roller. The transfer roller has an elastic layer, contacts with and separates from an image bearer including a belt-shaped elastic body, and nips a recording medium with the image bearer. The transfer counter roller has an elastic layer, is disposed facing the transfer roller, and nips the image bearer with the transfer roller. The transfer counter roller or the transfer roller is applied with a bias to transfer the toner image. Each of the elastic layers of the transfer roller and the transfer counter roller has an Asker C hardness of 75 or less. A difference in thickness between the elastic layers of the transfer roller and the transfer counter roller is ±3% or less.
    Type: Application
    Filed: August 31, 2022
    Publication date: April 6, 2023
    Applicant: Ricoh Company, Ltd.
    Inventors: Hiroshi Kikuchi, Seiichi Kogure, Hideki Kimura, Yutaka Takahashi, Kazuhiro Shimada, Yusuke Ishizuka, Takuya Akiyama, Yutaka Goto, Yuuki Aoki
  • Publication number: 20230061068
    Abstract: A biasing force adjusting device includes a roller, a roller holder, a first biasing member, and a second biasing member. The roller faces a mover. The roller holder holds the roller and is displaceable with respect to the mover. The first biasing member applies a first biasing force to the roller holder to press the roller against the mover. The second biasing member applies a second biasing force greater than the first biasing force to the roller holder to press the roller against the mover.
    Type: Application
    Filed: August 11, 2022
    Publication date: March 2, 2023
    Inventors: Yutaka GOTO, Seiichi KOGURE, Hiroshi KIKUCHI, Hideki KIMURA, Yutaka TAKAHASHI, Kazuhiro SHIMADA, Yusuke ISHIZUKA, Takuya AKIYAMA, Yuuki AOKI
  • Patent number: 11494602
    Abstract: An image forming apparatus includes a rotatable image bearer, a transfer rotator, a detector, and circuitry. The image bearer bears an image. The transfer rotator transfers the image from the image bearer onto a recording medium sandwiched and conveyed between the image bearer and the transfer rotator. The detector detects length information indicating a length, in a direction of conveyance of the recording medium, of the image on the recording medium. The circuitry corrects a correction value, based on the length information detected by the detector and a target value of the length information, to correct an image magnification, in the direction of conveyance of the recording medium, of the image to be formed on the recording medium. The circuitry controls an image forming operation of forming the image on the recording medium with the correction value.
    Type: Grant
    Filed: August 11, 2021
    Date of Patent: November 8, 2022
    Assignee: RICOH COMPANY, LTD.
    Inventors: Takuya Akiyama, Seiichi Kogure, Atsushi Nakamoto, Daisuke Hamada, Yuuki Aoki, Yutaka Goto
  • Publication number: 20220317601
    Abstract: An image forming apparatus includes an image bearer; a nip forming member configured to form a transfer nip between the image bearer and the nip forming member; a nip pressure changer configured to change a nip pressure of the transfer nip; a transfer bias applier configured to apply, to the transfer nip, a transfer bias in which an AC component is superimposed on a DC component; and a DC component adjuster configured to adjust the DC component in the transfer bias, according to the nip pressure that is changed by the nip pressure changer.
    Type: Application
    Filed: March 29, 2022
    Publication date: October 6, 2022
    Applicant: Ricoh Company, Ltd.
    Inventors: Yuuki Aoki, Seiichi Kogure, Hideki Kimura, Hiroshi Kikuchi, Yutaka Takahashi, Yusuke Ishizuka, Takuya Akiyama, Yutaka Goto, Kazuhiro Shimada
  • Patent number: 11366404
    Abstract: An image forming apparatus includes an image bearer, a transfer rotator, an adjuster, and circuitry. The image bearer bears a toner image. The transfer rotator contacts the image bearer to form a transfer nip between the transfer rotator and the image bearer. The transfer rotator transfers the toner image from the image bearer onto a sheet conveyed to the transfer nip. The adjuster adjusts at least one of a relative difference in linear velocity of the transfer rotator to the image bearer at the transfer nip and a relative contact pressure of the transfer rotator to the image bearer at the transfer nip. Based on a difference in image magnification, in a direction of conveyance of the sheet, of toner images transferred onto surfaces of one or more sheets conveyed to the transfer nip, the circuitry causes the adjuster to reduce the difference in image magnification.
    Type: Grant
    Filed: April 9, 2021
    Date of Patent: June 21, 2022
    Assignee: RICOH COMPANY, LTD.
    Inventors: Atsushi Nakamoto, Seiichi Kogure, Daisuke Hamada, Takuya Akiyama, Yuuki Aoki, Yutaka Goto
  • Publication number: 20220083828
    Abstract: An image forming apparatus includes a rotatable image bearer, a transfer rotator, a detector, and circuitry. The image bearer bears an image. The transfer rotator transfers the image from the image bearer onto a recording medium sandwiched and conveyed between the image bearer and the transfer rotator. The detector detects length information indicating a length, in a direction of conveyance of the recording medium, of the image on the recording medium. The circuitry corrects a correction value, based on the length information detected by the detector and a target value of the length information, to correct an image magnification, in the direction of conveyance of the recording medium, of the image to be formed on the recording medium. The circuitry controls an image forming operation of forming the image on the recording medium with the correction value.
    Type: Application
    Filed: August 11, 2021
    Publication date: March 17, 2022
    Inventors: Takuya AKIYAMA, Seiichi KOGURE, Atsushi NAKAMOTO, Daisuke HAMADA, Yuuki AOKI, Yutaka GOTO
  • Patent number: 11269271
    Abstract: A roller unit includes a roller, an arm, a holder, a tension spring, and a restriction member. The arm rotatably holds the roller. The holder swingably holds the arm. The tension spring includes a first hook at one end of the tension spring and a second hook at another end of the tension spring. The first hook is hooked on an arm-side hook of the arm. The second hook is hooked on a holder-side hook of the holder. The restriction member is configured to restrict movement of the tension spring in a state in which the first hook or the second hook is unhooked.
    Type: Grant
    Filed: January 13, 2021
    Date of Patent: March 8, 2022
    Assignee: RICOH COMPANY, LTD.
    Inventors: Yutaka Goto, Seiichi Kogure, Atsushi Nakamoto, Daisuke Hamada, Takuya Akiyama, Yuuki Aoki
  • Publication number: 20220057311
    Abstract: For providing a method capable of physically and objectively evaluating the consistency and state of a stool, provided is a method for measuring a stool consistency with a texture analyzer provided with a probe, the probe having a shape capable of measuring a consistency of a stool in a liquid form and in a solid form.
    Type: Application
    Filed: December 4, 2019
    Publication date: February 24, 2022
    Applicant: KABUSHIKI KAISHA YAKULT HONSHA
    Inventors: Takuya AKIYAMA, Kazunori MATSUDA, Junji FUJIMOTO
  • Publication number: 20210333725
    Abstract: An image forming apparatus includes an image bearer, a transfer rotator, an adjuster, and circuitry. The image bearer bears a toner image. The transfer rotator contacts the image bearer to form a transfer nip between the transfer rotator and the image bearer. The transfer rotator transfers the toner image from the image bearer onto a sheet conveyed to the transfer nip. The adjuster adjusts at least one of a relative difference in linear velocity of the transfer rotator to the image bearer at the transfer nip and a relative contact pressure of the transfer rotator to the image bearer at the transfer nip. Based on a difference in image magnification, in a direction of conveyance of the sheet, of toner images transferred onto surfaces of one or more sheets conveyed to the transfer nip, the circuitry causes the adjuster to reduce the difference in image magnification.
    Type: Application
    Filed: April 9, 2021
    Publication date: October 28, 2021
    Applicant: Ricoh Company, Ltd.
    Inventors: Atsushi NAKAMOTO, Seiichi KOGURE, Daisuke HAMADA, Takuya AKIYAMA, Yuuki AOKI, Yutaka GOTO
  • Patent number: 11126114
    Abstract: A belt running device includes a plurality of rollers, a belt, a guide, a regulating member, and an abutting member. The belt is wound around the plurality of rollers and configured to rotate. The guide is provided at an end of an inner peripheral surface of the belt. The regulating member is provided at an end of at least one roller of the plurality of rollers in the axial direction of the at least one roller and configured to contact the guide and regulate a movement of the belt in the axial direction of the at least one roller. The abutting member is configured to contact an outer peripheral surface of the belt to press the belt inward in a vicinity of a contact start point at which the guide and the regulating member start to contact when the belt runs.
    Type: Grant
    Filed: August 21, 2020
    Date of Patent: September 21, 2021
    Assignee: Ricoh Company, Ltd.
    Inventors: Atsushi Nakamoto, Seiichi Kogure, Daisuke Hamada, Takuya Akiyama, Yuuki Aoki, Yutaka Goto