Patents by Inventor Wataru Takahashi

Wataru Takahashi 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).

  • Publication number: 20210404570
    Abstract: A capacity control valve includes a valve housing provided with a Ps port through which a suction fluid at a suction pressure passes and a Pc port through which a control fluid at a control pressure passes; a valve body configured to close and open a communication between the Pc port and the Ps port by a driving force of a solenoid; and a pressure sensitive body that applies a biasing force to the valve body according to a surrounding fluid pressure. An accommodation chamber in which a rear side portion of the valve body is accommodated is provided with a supply passage to which suction fluid is supplied.
    Type: Application
    Filed: November 22, 2019
    Publication date: December 30, 2021
    Inventors: Masahiro HAYAMA, Kohei FUKUDOME, Toshinori KANZAKI, Wataru TAKAHASHI, Keigo SHIRAFUJI
  • Patent number: 11209767
    Abstract: Toner contains toner base particles and an organosilicon polymer on the surface of the toner base particles, and silica particles are added to the toner as an external additive. The surface roughness Rz of an intermediate transfer belt, against which a blade abuts, in the width direction of the intermediate transfer belt perpendicular to the belt conveying direction is larger than the average particle diameter Ry of the organosilicon polymer and is smaller than the average particle diameter Rk of the silica particles.
    Type: Grant
    Filed: March 23, 2021
    Date of Patent: December 28, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shohei Ishio, Keisuke Ishizumi, Shinji Katagiri, Wataru Takahashi
  • Publication number: 20210398254
    Abstract: This image generation device is provided with: a learning image generation unit (1) for generating a training input image and a training output image based on three-dimensional data; a noise addition unit (2) for adding the same noise to the training input image and the training output image; a learning unit (3) for learning a learning model for extracting or removing a specific portion by performing machine learning based on the training input image to which the noise has been added and the training output image to which the noise has been added; and an image generation unit (4) for generating an image from which the specific portion has been extracted or removed by using a learned learning model.
    Type: Application
    Filed: September 27, 2019
    Publication date: December 23, 2021
    Inventors: Shota OSHIKAWA, Wataru TAKAHASHI
  • Publication number: 20210387467
    Abstract: An image forming system includes an image forming apparatus, a sheet processing device, and control circuitry. The image forming apparatus forms an image on a sheet. The sheet processing device performs post-processing on the sheet. The sheet processing device includes a first conveyance path through which the sheet is conveyed and subjected to the post-processing and a second conveyance path through which the sheet is conveyed without the post-processing. In response to an instruction of print jobs including both a print job of one or N copies subjected to the post-processing and a print job not subjected to the post-processing, the circuitry executes the job not subjected to the post-processing during execution of an M-th copy of the job subjected to the post-processing and causes the sheet to be conveyed through the second conveyance path, where N is two or greater and M satisfies 1?M<N.
    Type: Application
    Filed: June 10, 2021
    Publication date: December 16, 2021
    Applicant: Ricoh Company, Ltd.
    Inventors: Sho ASANO, Wataru TAKAHASHI, Yoshito SUZUKI, Shinya MONMA, Joji AKIYAMA, Yohsuke HARAGUCHI, Wataru NOZAKI, Tomohiro FURUHASHI
  • Publication number: 20210372396
    Abstract: A capacity control valve V includes a valve housing, a primary valve opened and closed by a driving force of a solenoid, a pressure-sensitive valve disposed in a pressure-sensitive chamber, and a differential pressure valve opened and closed by a differential pressure valve body moved by a pressure. A control port and a suction port communicate with each other through an intermediate communication path by opening and closing the pressure-sensitive valve. An adapter is provided with an accommodation portion accommodating a differential pressure valve body, and first urging member and a second urging member are interposed in the accommodation portion on both sides of the differential pressure valve in an opening and closing direction with the differential pressure valve body interposed therebetween.
    Type: Application
    Filed: May 22, 2019
    Publication date: December 2, 2021
    Inventors: Daichi KURIHARA, Yoshihiro OGAWA, Keigo SHIRAFUJI, Kohei FUKUDOME, Masahiro HAYAMA, Takahiro EJIMA, Wataru TAKAHASHI
  • Publication number: 20210363980
    Abstract: A capacity control valve includes a valve housing provided with a discharge port, suction ports, a control port allowing a control fluid of a control pressure Pc to pass therethrough and a primary valve including a primary valve seat and a primary valve body driven by a solenoid and opening and closing a communication between the discharge port and the control port by the movement of the primary valve body. The capacity control valve further includes a CS valve which includes a CS valve body, a first spring urging the CS valve body in a closing direction, and a second spring urging the CS valve body in an opening direction, the control port and the suction port being opened at a valve closed position of the primary valve body, the control port and the suction port being closed at a valve opened position of the primary valve body.
    Type: Application
    Filed: July 9, 2019
    Publication date: November 25, 2021
    Inventors: Masahiro HAYAMA, Kohei FUKUDOME, Takahiro EJIMA, Daichi KURIHARA, Wataru TAKAHASHI, Keigo SHIRAFUJI, Yoshihiro OGAWA
  • Publication number: 20210358129
    Abstract: A full-size training image is reduced by an image reduction unit (11) and input to an FCN (Fully Convolutional Neural Network) computation unit (13), and the FCN computation unit (13) performs calculation under a set filter coefficient and outputs a reduced label image. The reduced label image is enlarged to a full size by an image enlargement unit (14), the error calculation unit (15) calculates an error between the enlarged label image and a full-size ground truth based on a loss function, and the parameter update unit (16) updates a filter coefficient depending on the error. By repeating learning under the control of the learning control unit 17, it is possible to generate a learning model for performing optimal segmentation including an error generated at the time of image enlargement. Further, by including the image enlargement processing in the learning model, a full-size label image can be output, and the accuracy evaluation of the model can also be performed with high accuracy.
    Type: Application
    Filed: June 28, 2018
    Publication date: November 18, 2021
    Inventors: Wataru TAKAHASHI, Shota OSHIKAWA
  • Publication number: 20210354948
    Abstract: A sheet processing apparatus is configured to sandwich one or more sheet media in a two-ply sheet in which two sheets are overlaid and bonded together at a portion of the two-ply sheet. The sheet processing apparatus includes circuitry configured to control insertion processing to insert the one or more sheet media into the two-ply sheet based on a length of the two-ply sheet in a conveyance direction, a length of one of the one or more sheet media in the conveyance direction, and a number of the one or more sheet media.
    Type: Application
    Filed: May 6, 2021
    Publication date: November 18, 2021
    Applicant: Ricoh Company, Ltd.
    Inventors: Wataru TAKAHASHI, Tomohiro FURUHASHI, Sho ASANO, Yoshito SUZUKI, Shinya MONMA, Johji AKIYAMA, Yohsuke HARAGUCHI, Wataru NOZAKI
  • Publication number: 20210356899
    Abstract: A sheet processing device inserts a sheet-shaped medium into a two-ply sheet in which two sheets are overlaid and partially bonded. The sheet processing device includes control circuitry to execute a single insertion mode in which one sheet-shaped medium is inserted into the two-ply sheet and a multiple insertion mode in which a plurality of sheet-shaped media are inserted into the two-ply sheet along a conveyance direction. The control circuitry inserts the one sheet-shaped medium into the two-ply sheet in the single insertion mode and the plurality of sheet-shaped media into the two-ply sheet in the multiple insertion mode, with the two-ply sheet being stopped.
    Type: Application
    Filed: May 11, 2021
    Publication date: November 18, 2021
    Applicant: Ricoh Company, Ltd.
    Inventors: Wataru TAKAHASHI, Tomohiro FURUHASHI, Sho ASANO, Yoshito SUZUKI, Shinya MONMA, Joji AKIYAMA, Yohsuke HARAGUCHI, Wataru NOZAKI
  • Patent number: 11176672
    Abstract: A full-size training image is reduced by an image reduction unit (11) and input to an FCN (Fully Convolutional Neural Network) computation unit (13), and the FCN computation unit (13) performs calculation under a set filter coefficient and outputs a reduced label image. The reduced label image is enlarged to a full size by an image enlargement unit (14), the error calculation unit (15) calculates an error between the enlarged label image and a full-size ground truth based on a loss function, and the parameter update unit (16) updates a filter coefficient depending on the error. By repeating learning under the control of the learning control unit 17, it is possible to generate a learning model for performing optimal segmentation including an error generated at the time of image enlargement. Further, by including the image enlargement processing in the learning model, a full-size label image can be output, and the accuracy evaluation of the model can also be performed with high accuracy.
    Type: Grant
    Filed: June 28, 2018
    Date of Patent: November 16, 2021
    Assignee: Shimadzu Corporation
    Inventors: Wataru Takahashi, Shota Oshikawa
  • Publication number: 20210350513
    Abstract: This production method of a trained model (10) includes a step of optimizing a training model (11) so that a value of a loss function (A) becomes small. The loss function (A) is configured to output a relatively large value in a case where the contrast of the predetermined area (PA) in a brightness-adjusted image adjusted in brightness becomes high with respect to training data (20) than in a case where the contrast of the predetermined area in the brightness-adjusted image (3) becomes low with respect to the training data.
    Type: Application
    Filed: October 3, 2018
    Publication date: November 11, 2021
    Inventors: Wataru TAKAHASHI, Yusuke TAGAWA
  • Publication number: 20210347160
    Abstract: A sheet processing device is configured to separate a non-bonding portion of a two-ply sheet in which two sheets are overlapped and bonded together at one end as a bonding portion of the two-ply sheet. The sheet processing device includes a first sheet feeder configured to feed the two-ply sheet, a second sheet feeder configured to feed an inner sheet to be inserted between the two sheets of the two-ply sheet in a state in which the non-bonding portion of the two-ply sheet is separated, and circuitry configured to cause the first sheet feeder to feed the two-ply sheet, perform a sheet separating operation on the two-ply sheet to separate the non-bonding portion of the two-ply sheet, and cause the second sheet feeder to start feeding the inner sheet before completion of the sheet separating operation on the two-ply sheet.
    Type: Application
    Filed: May 4, 2021
    Publication date: November 11, 2021
    Applicant: Ricoh Company, Ltd.
    Inventors: Joji AKIYAMA, Tomohiro FURUHASHI, Wataru TAKAHASHI, Sho ASANO, Yoshito SUZUKI, Shinya MONMA, Yohsuke HARAGUCHI, Wataru NOZAKI
  • Publication number: 20210347589
    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: Application
    Filed: May 4, 2021
    Publication date: November 11, 2021
    Applicant: 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
  • Patent number: 11161710
    Abstract: A sheet separation device to open a two-ply sheet includes a rotator; a nipping member disposed opposite the rotator and configured to nip the two-ply sheet with the rotator; a conveyor configured to convey the two-ply sheet between the rotator and the nipping member, and a winding member disposed adjacent to the rotator. The conveyor conveys the two-ply sheet with a bonded portion of the two-ply sheet being an upstream end or a downstream end of the two-ply sheet in a conveyance direction of the two-ply sheet. The winding member winds the two-ply sheet around the rotator, to create a difference in winding circumferential length between the two sheets and separate the two sheets.
    Type: Grant
    Filed: January 20, 2020
    Date of Patent: November 2, 2021
    Assignee: RICOH COMPANY, LTD.
    Inventors: Tomohiro Furuhashi, Akihiro Iwasaki, Michitaka Suzuki, Fumiharu Yoneyama, Tomomichi Hoshino, Wataru Takahashi, Takuya Morinaga, Koki Sakano, Akira Kunieda, Yohsuke Haraguchi, Makoto Hidaka
  • Publication number: 20210333730
    Abstract: An image forming apparatus includes a sheet separation device, a first sheet feeder, a second sheet feeder, an image forming device, a heat source, and a circuitry. The sheet separation device is configured to separate a two-ply sheet in which two sheets are overlapped and bonded together at one end as a bonding portion of the two-ply sheet. The first sheet feeder is configured to feed the two-ply sheet. The second sheet feeder is configured to feed an inner sheet to be inserted between the two sheets. The image forming device is configured to form an image on the inner sheet fed from the second sheet feeder. The heat source is disposed upstream from the sheet separation device in the sheet conveyance direction. The circuitry is configured to cause the two-ply sheet fed from the first sheet feeder, to detour the heat source to the sheet separation device.
    Type: Application
    Filed: April 23, 2021
    Publication date: October 28, 2021
    Applicant: Ricoh Company, Ltd.
    Inventors: Sho ASANO, Tomohiro FURUHASHI, Wataru TAKAHASHI, Yoshito SUZUKI, Shinya MONMA, Johji AKIYAMA, Yohsuke HARAGUCHI, Wataru NOZAKI
  • Patent number: 11156301
    Abstract: A capacity control valve V includes a valve housing provided with a Pc port, a Pd port and a Ps port; a main valve body that includes a main valve portion which comes into contact with and separates from a main valve seat 10a to close and open a communication between a Pd port and the Pc port using a driving force of a solenoid; a pressure-sensitive valve capable of opening and closing, depending on a surrounding pressure, a first communication passage through which the Pc port and the Ps port are communicable with each other; and a differential pressure valve capable of opening and closing, depending on a pressure difference, a second communication passage through which the Pc port and the Ps port are communicable with each other.
    Type: Grant
    Filed: January 24, 2019
    Date of Patent: October 26, 2021
    Inventors: Masahiro Hayama, Yoshihiro Ogawa, Keigo Shirafuji, Kohei Fukudome, Takahiro Ejima, Daichi Kurihara, Wataru Takahashi
  • Publication number: 20210325804
    Abstract: A sheet separation device is configured to separate a non-bonding portion of a two-ply sheet in which two sheets are overlapped and bonded together at one end as a bonding portion of the two-ply sheet. The sheet separation device includes a conveyance roller pair and circuitry. The conveyance roller pair is configured to convey the two-ply sheet while nipping the two-ply sheet, when separating the non-bonding portion of the two-ply sheet. The circuitry is configured to control sheet conveyance. The circuitry is configured to stop the conveyance roller pair, cause a leading end of the two-ply sheet conveyed toward the conveyance roller pair to contact a nip region of the conveyance roller pair while the conveyance roller pair is stopped, and start the conveyance roller pair to rotate to nip the two-ply sheet.
    Type: Application
    Filed: April 13, 2021
    Publication date: October 21, 2021
    Applicant: Ricoh Company, Ltd.
    Inventors: Tomohiro FURUHASHI, Wataru TAKAHASHI, Sho ASANO, Yoshito SUZUKI, Shinya MONMA, Joji AKIYAMA, Yohsuke HARAGUCHI, Wataru NOZAKI
  • Publication number: 20210327522
    Abstract: A liquid discharge head having an element board including an element configured to discharge a liquid includes a first storage element and a second storage element. The first storage element is a fuse element or an anti-fuse element. The second storage element is a semiconductor memory capable of holding a larger capacity than the first storage element. The second storage element is provided on an area other than the element board.
    Type: Application
    Filed: June 29, 2021
    Publication date: October 21, 2021
    Inventors: Hiroshi Yamada, Kenta Udagawa, Wataru Takahashi, Norihiro Ikebe
  • Publication number: 20210302901
    Abstract: Toner contains toner base particles and an organosilicon polymer on the surface of the toner base particles, and silica particles are added to the toner as an external additive. The surface roughness Rz of an intermediate transfer belt, against which a blade abuts, in the width direction of the intermediate transfer belt perpendicular to the belt conveying direction is larger than the average particle diameter Ry of the organosilicon polymer and is smaller than the average particle diameter Rk of the silica particles.
    Type: Application
    Filed: March 23, 2021
    Publication date: September 30, 2021
    Inventors: Shohei Ishio, Keisuke Ishizumi, Shinji Katagiri, Wataru Takahashi
  • Publication number: 20210294249
    Abstract: A sheet separation device separates a non-bonding portion of a two-ply sheet in which two sheets are overlapped and bonded together at one end of the two-ply sheet. The sheet separation device includes a separator that includes a first separator and a second separator. The first separator is inserted into a gap between the two sheets of the two-ply sheet. The second separator is inserted between the two sheets at said another end of the two-ply sheet that is opposite to the one end of the two-ply sheet and moves in a width direction of the two-ply sheet after the first separator is inserted into the gap and relatively moves from the one end to said another end.
    Type: Application
    Filed: March 18, 2021
    Publication date: September 23, 2021
    Applicant: Ricoh Company, Ltd.
    Inventors: Wataru TAKAHASHI, Tomohiro FURUHASHI, Shinya MONMA, Yoshito SUZUKI, Joji AKIYAMA, Yohsuke HARAGUCHI, Sho ASANO, Wataru NOZAKI