Patents by Inventor Akinori Yamaguchi

Akinori Yamaguchi 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: 11942255
    Abstract: An inductor component includes an element body including a magnetic layer containing a resin and a magnetic powder; a coil wiring line arranged inside the element body; and an insulating coating film covering the coil wiring line and not including a magnetic material. In a cross section perpendicular to an extension direction of the coil wiring line, a top surface thickness of a part of the insulating coating film covering the top surface of the coil wiring line and a side surface thickness of parts of the insulating coating film covering side surfaces of the coil wiring line are less than or equal to 10 ?m, and a corner thickness of parts of the insulating coating film that cover corners of the coil wiring line interposed between the top surface and the side surfaces is at least half of the top surface thickness and/or the side surface thickness.
    Type: Grant
    Filed: August 25, 2020
    Date of Patent: March 26, 2024
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Ryuichiro Tominaga, Koichi Yamaguchi, Akinori Hamada, Isamu Miyake, Shinya Hirai
  • Patent number: 11872663
    Abstract: A repair welding method according to at least one embodiment is for a member in which a first end and a second end of a parent material are connected by welding and includes: a step of removing a portion including at least a part of a first heat-affected zone of an existing welded portion of the member; and a step of performing repair welding after removing the portion. In a cross-section including the parent material and the existing welded portion, all intersection portions between the first heat-affected zone of the existing welded portion and a second heat-affected zone due to the repair welding have an intersection angle between the first heat-affected zone and the second heat-affected zone of 70° to 110°.
    Type: Grant
    Filed: July 19, 2019
    Date of Patent: January 16, 2024
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Masaki Honda, Toshiaki Nishio, Nobuyoshi Komai, Takumi Tokiyoshi, Masaaki Fujita, Kimihiko Tominaga, Hiroyuki Ohyama, Fumitoshi Sakata, Koichi Teshima, Eiji Murakami, Akinori Yamaguchi, Fumio Nishi
  • Publication number: 20210268612
    Abstract: A repair welding method according to at least one embodiment is for a member in which a first end and a second end of a parent material are connected by welding and includes: a step of removing a portion including at least a part of a first heat-affected zone of an existing welded portion of the member; and a step of performing repair welding after removing the portion. In a cross-section including the parent material and the existing welded portion, all intersection portions between the first heat-affected zone of the existing welded portion and a second heat-affected zone due to the repair welding have an intersection angle between the first heat-affected zone and the second heat-affected zone of 70° to 110°.
    Type: Application
    Filed: July 19, 2019
    Publication date: September 2, 2021
    Applicant: MITSUBISHI POWER, LTD.
    Inventors: Masaki Honda, Toshiaki Nishio, Nobuyoshi Komai, Takumi Tokiyoshi, Masaaki Fujita, Kimihiko Tominaga, Hiroyuki Ohyama, Fumitoshi Sakata, Koichi Teshima, Eiji Murakami, Akinori Yamaguchi, Fumio Nishi
  • Patent number: 9913502
    Abstract: A glove base and glove are provided, which release moisture outside from the entire glove when the glove is configured only of a fiber glove base or when a coating is provided to a surface of the glove base. The glove base of the present invention is made of fibers and has a hand shape. Water-absorbing properties of a first fiber type exposed mainly to an inside surface of the glove base are higher than water-absorbing properties of a second fiber type exposed mainly to outside surface of the glove base. The first fiber type absorbs and moves moisture on a surface of a hand inside the glove base toward the second fiber type, and the second fiber type then moves the moisture from the first fiber type mainly in a surface direction of the glove base.
    Type: Grant
    Filed: December 8, 2016
    Date of Patent: March 13, 2018
    Assignee: Towa Corporation Co., Ltd.
    Inventors: Nobuyoshi Koga, Akinori Yamaguchi, Mai Kojio
  • Patent number: 9811023
    Abstract: A developing device includes: a toner detection unit that detects whether there is toner that is stored; a stirring unit that stirs toner in a toner container; a calculation unit that calculates an output duty by comparing an output voltage of the toner detection unit representing whether there is toner after the stirring, with a predetermined voltage value; and a remaining amount detection unit that detects an amount of remaining toner at the output duty from a correspondence relationship between the output duty and an amount of remaining toner that is previously set.
    Type: Grant
    Filed: November 3, 2014
    Date of Patent: November 7, 2017
    Assignee: RICOH COMPANY, LTD.
    Inventors: Akinori Yamaguchi, Naoki Nakatake
  • Patent number: 9746795
    Abstract: An optical writing control device controls emission or lighting of a light source onto a photoconductor surface in a latent image forming process and a discharge process, by either setting a light emission time longer in the discharge process or setting a resolution in a sub-scanning direction lower in the discharge process, compared to the latent image forming process.
    Type: Grant
    Filed: March 9, 2016
    Date of Patent: August 29, 2017
    Assignee: Ricoh Company, Ltd.
    Inventors: Motohiro Kawanabe, Yoshinori Shirasaki, Masayuki Hayashi, Masatoshi Murakami, Yuusuke Kohri, Akinori Yamaguchi
  • Patent number: 9658565
    Abstract: A developing device includes a development unit, a developer amount detector, an accuracy requirement determiner, and a detection count setting unit. The development unit includes a developer container configured to store a developer. The development unit is configured to supply the developer from the developer container to a latent image bearer, on which an electrostatic latent image is to be formed according to image data, to form a developer image. The developer amount detector is configured to detect a developer amount in the toner container of the development unit in every detection period. The accuracy requirement determiner is configured to a determine accuracy requirement required as a detection accuracy of the developer amount by the developer amount detector. The detection count setting unit is configured to set a number of times of detection of the developer amount by the developer amount detector based on the accuracy requirement.
    Type: Grant
    Filed: February 22, 2016
    Date of Patent: May 23, 2017
    Assignee: Ricoh Company, Ltd.
    Inventors: Takashi Oida, Shoh Tsuritani, Tomohiro Ohshima, Akinori Yamaguchi, Mizuho Ohmura
  • Patent number: 9644540
    Abstract: A collector 3 that collects particles P contained in a fluid includes: a bent pipe 31 that guides the fluid flowing from a first direction X in a second direction Z; a branch pipe 32 that causes the fluid guided in the second direction Z to branch into the second direction Z and a third direction Y; a collection pipe 34 in which the particles P in the fluid guided in the second direction Z by the branch pipe 32 are collected; and a reduction-expansion pipe 33 which is arranged between the bent pipe 31 and the branch pipe 32 and of which the flow path is narrowed while being biased to an inlet side of the bent pipe 31.
    Type: Grant
    Filed: May 23, 2013
    Date of Patent: May 9, 2017
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Akinori Yamaguchi, Kazuya Higashi, Kiyonori Kushioka
  • Publication number: 20170099890
    Abstract: [Problem] To provide a glove base and glove which enhance water-absorbing properties for moisture on a surface of a hand and easily release moisture to the outside from the entire glove even if the glove is configured only of a fiber-made base or even if coating is provided to a surface of the glove. [Solution] A glove base of the present invention is a glove base made of fiber and having a hand shape, wherein water-absorbing properties of a first fiber exposed mainly to inside of the glove base are higher than water-absorbing properties of a second fiber exposed mainly to outside of the glove base, the first fiber absorbs and moves moisture on a surface of a hand on the inside to the second fiber, and the second fiber moves the moisture moved from the first fiber mainly in a surface direction.
    Type: Application
    Filed: December 8, 2016
    Publication date: April 13, 2017
    Applicant: TOWA CORPORATION CO., LTD.
    Inventors: Nobuyoshi KOGA, Akinori YAMAGUCHI, Mai KOJIO
  • Patent number: 9618875
    Abstract: An optical writing control device and method are provided, for controlling light emission of a plurality of light sources to form an electrostatic latent image on a photosensitive element, the light sources including a plurality of light emitting elements disposed in a line and classified into a plurality of groups, including frequency converter circuitry configured to acquire image information to be formed as the electrostatic latent image; and a light source controller configured to control the plurality of light sources based on pixel information generated from the acquired image information, wherein the light source controller is further configured to control the light emission of the plurality of light sources by classifying the light emitting elements into the plurality of groups, and shifting a timing of light emission from one group of the plurality of groups to a next group of the plurality of groups, and determine a common illuminating period for the light emitting elements of at least one light sou
    Type: Grant
    Filed: September 16, 2015
    Date of Patent: April 11, 2017
    Assignee: RICOH COMPANY, LTD.
    Inventors: Akinori Yamaguchi, Masayuki Hayashi, Motohiro Kawanabe, Yoshinori Shirasaki, Yuusuke Kohri, Masatoshi Murakami
  • Patent number: 9535360
    Abstract: An image forming apparatus comprises: a plurality of exposure units, each of the exposure units including a plurality of light emitting elements that are arranged in a main scanning direction; a calculating unit that, with respect to each of the exposure units, calculates a pre-charge period that is a period during which a pre-charge is performed on at least any of the light emitting elements included in a corresponding exposure unit; and an emission control unit that, with respect to each of the exposure units, causes the light emitting elements included in a corresponding exposure unit to emit light such that a pre-charge period of at least any of the exposure units is shifted with respect to pre-charge periods of remaining ones of the exposure units.
    Type: Grant
    Filed: March 4, 2015
    Date of Patent: January 3, 2017
    Assignee: RICOH COMPANY, LIMITED
    Inventors: Motohiro Kawanabe, Masayuki Hayashi, Masatoshi Murakami, Yoshinori Shirasaki, Yuusuke Kohri, Akinori Yamaguchi
  • Patent number: 9529295
    Abstract: An optical writing control device and method are provided, for controlling light emission of a plurality of light sources to form an electrostatic latent image on a photosensitive element, the light sources including a plurality of light emitting elements disposed in a line, including frequency converter circuitry configured to acquire image information to be formed as the electrostatic latent image; and a light source controller configured to control the plurality of light sources based on pixel information generated from the acquired image information, the light source controller being further configured to control the light emission of the plurality of light sources by classifying the light emitting elements into a plurality of groups, and shifting the timing of light emission from one group of the plurality of groups to a next group of the plurality of groups, and determine an illuminating period for each light source of the plurality of light sources based on the shifted timing of light emission among th
    Type: Grant
    Filed: October 13, 2015
    Date of Patent: December 27, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventors: Yuusuke Kohri, Masayuki Hayashi, Motohiro Kawanabe, Yoshinori Shirasaki, Masatoshi Murakami, Akinori Yamaguchi
  • Publication number: 20160370728
    Abstract: There is provided an image forming apparatus for forming a latent image on a photoconductor by causing a plurality of light emitting bodies to emit light, the image forming apparatus comprising: a storage unit configured to store respective performances of the light emitting bodies; a control unit configured to control the light emitting bodies to emit the light; wherein the control unit adjusts light emitting periods of the light emitting bodies based on the performances of the light emitting bodies so that a capability of one light emitting body of the light emitting bodies for forming the latent image becomes closer to a capability of another light emitting body of the light emitting bodies for forming the latent image.
    Type: Application
    Filed: June 15, 2016
    Publication date: December 22, 2016
    Applicant: Ricoh Company, Ltd.
    Inventors: Akinori YAMAGUCHI, Masayuki HAYASHI, Motohiro KAWANABE, Yoshinori SHIRASAKI, Yuusuke KOHRI, Masatoshi MURAKAMI
  • Patent number: 9516192
    Abstract: An image forming apparatus comprising: a resolution conversion unit configured to convert the resolution of a pixel provided by input image data; a gradation conversion unit configured to perform matrix conversion onto the pixel; and a writing unit configured to perform a write operation, wherein, in the normal mode, the gradation conversion unit performs matrix conversion onto the pixel with reference to the gradation conversion table for the normal mode, and the writing unit performs the write operation of the pixel in a normal order that is the order image data being input into the image forming apparatus, and in the reverse mode, the gradation conversion unit performs matrix conversion onto the pixel with reference to the gradation conversion table for the reverse mode, and the writing unit performs the write operation of the pixel in a reverse order opposite to the normal order.
    Type: Grant
    Filed: September 11, 2013
    Date of Patent: December 6, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventors: Masayuki Hayashi, Yoshinori Shirasaki, Tatsuya Miyadera, Motohiro Kawanabe, Hiroaki Ikeda, Akinori Yamaguchi, Tomohiro Ohshima
  • Patent number: 9482985
    Abstract: An image forming apparatus includes multiple exposure units each including multiple light emitting elements, a reading unit that reads data to be used for exposure by each one of the exposure units, one at a time from the exposure unit by the time the exposure units starts exposure, a storing unit that stores the data read by the reading unit, and a transfer unit that transfers the data stored in the storing unit to the exposure unit by the time the exposure unit starts exposure.
    Type: Grant
    Filed: May 26, 2015
    Date of Patent: November 1, 2016
    Assignee: Ricoh Company, Ltd.
    Inventors: Yuusuke Kohri, Masayuki Hayashi, Motohiro Kawanabe, Yoshinori Shirasaki, Masatoshi Murakami, Akinori Yamaguchi
  • Publication number: 20160274481
    Abstract: An optical writing control device controls emission or lighting of a light source onto a photoconductor surface in a latent image forming process and a discharge process, by either setting a light emission time longer in the discharge process or setting a resolution in a sub-scanning direction lower in the discharge process, compared to the latent image forming process.
    Type: Application
    Filed: March 9, 2016
    Publication date: September 22, 2016
    Inventors: Motohiro KAWANABE, Yoshinori SHIRASAKI, Masayuki HAYASHI, Masatoshi MURAKAMI, Yuusuke KOHRI, Akinori YAMAGUCHI
  • Publication number: 20160246213
    Abstract: A developing device includes a development unit, a developer amount detector, an accuracy requirement determiner, and a detection count setting unit. The development unit includes a developer container configured to store a developer. The development unit is configured to supply the developer from the developer container to a latent image bearer, on which an electrostatic latent image is to be formed according to image data, to form a developer image. The developer amount detector is configured to detect a developer amount in the toner container of the development unit in every detection period. The accuracy requirement determiner is configured to a determine accuracy requirement required as a detection accuracy of the developer amount by the developer amount detector. The detection count setting unit is configured to set a number of times of detection of the developer amount by the developer amount detector based on the accuracy requirement.
    Type: Application
    Filed: February 22, 2016
    Publication date: August 25, 2016
    Inventors: Takashi OIDA, Shoh TSURITANI, Tomohiro OHSHIMA, Akinori YAMAGUCHI, Mizuho OHMURA
  • Patent number: 9360792
    Abstract: An optical writing controller controls emission of a light source device including multiple light emitting element rows each constituted by multiple light emitting elements arranged in a sub-scanning direction to form an electrostatic latent image on a photoconductor. The optical writing controller includes an image information acquisition unit to acquire image information on an image to be formed as the electrostatic latent image; a light source control unit to sequentially control emission of the multiple light emitting elements on the basis of information on pixels generated on the basis of the acquired image information; an error information acquisition unit to acquire information indicating an error of a direction in which the light emitting elements are arranged with respect to the sub-scanning direction; and an adjustment value generation unit to generate an adjustment value for adjusting a light quantity of each light emitting element on the basis of the error.
    Type: Grant
    Filed: March 13, 2015
    Date of Patent: June 7, 2016
    Assignee: Ricoh Company, Limited
    Inventors: Masatoshi Murakami, Masayuki Hayashi, Motohiro Kawanabe, Yoshinori Shirasaki, Yuusuke Kohri, Akinori Yamaguchi
  • Publication number: 20160109822
    Abstract: An optical writing control device and method are provided, for controlling light emission of a plurality of light sources to form an electrostatic latent image on a photosensitive element, the light sources including a plurality of light emitting elements disposed in a line, including frequency converter circuitry configured to acquire image information to be formed as the electrostatic latent image; and a light source controller configured to control the plurality of light sources based on pixel information generated from the acquired image information, the light source controller being further configured to control the light emission of the plurality of light sources by classifying the light emitting elements into a plurality of groups, and shifting the timing of light emission from one group of the plurality of groups to a next group of the plurality of groups, and determine an illuminating period for each light source of the plurality of light sources based on the shifted timing of light emission among th
    Type: Application
    Filed: October 13, 2015
    Publication date: April 21, 2016
    Inventors: Yuusuke KOHRI, Masayuki Hayashi, Motohiro Kawanabe, Yoshinori Shirasaki, Masatoshi Murakami, Akinori Yamaguchi
  • Patent number: 9302497
    Abstract: An optical writing device is configured to form electrostatic latent images on a plurality of photosensitive elements by a plurality of light sources. The optical writing device includes: an image-data acquiring section that acquires image data; and a light-source control section that performs light-emission control on the light source based on pixel data generated from acquired image data, and also performs a neutralization process on the photosensitive element by controlling the light source to expose the photosensitive element to light. In the neutralization process, the light-source control section divides a period during which light-on/off control can be performed on the light source, into sub-periods based on pixel data input to the light-source control section, and causes the light sources to be lit in any one of the sub-periods so as to always place at least one of the plurality of light sources in a light-off state.
    Type: Grant
    Filed: November 21, 2012
    Date of Patent: April 5, 2016
    Assignee: RICOH COMPANY, LIMITED
    Inventors: Masayuki Hayashi, Yoshinori Shirasaki, Kunihiro Komai, Hiroaki Ikeda, Takeshi Shikama, Akinori Yamaguchi, Takuhei Yokoyama, Motohiro Kawanabe, Tatsuya Miyadera