Patents by Inventor Kimiharu Yanagisawa

Kimiharu Yanagisawa 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: 20220094815
    Abstract: An image reading device and an image forming apparatus. The image reading device includes an image reader to read an image of a document, and a color reference component arranged to face the image reader. In the image reading device, the image reader reads the color reference component at a prescribed timing to obtain color reference image data, and correction data generating processes are executed based on the obtained color reference image data to generate correction data used to correct data of the image read by the image reader. In the image reading device, wherein the color reference component is moved relative to the image reader in a direction orthogonal to a direction toward and away from the image reader. The image forming apparatus includes the image reading device, and an image is formed on a recording material based on data of the image read by the image reading device.
    Type: Application
    Filed: August 27, 2021
    Publication date: March 24, 2022
    Applicant: Ricoh Company, Ltd.
    Inventors: Fumiyuki HEISHI, Hiroshi KUBO, Shinya KITAOKA, Satoshi SAITO, Yoshito SUZUKI, Kimiharu YANAGISAWA, Atsushi KANAYA
  • Patent number: 11115561
    Abstract: An inclination detecting device includes processing circuitry. The processing circuitry is configured to detect, in image information that is an image of an object imaged by an imaging device at an imaging position where a background member forms a background, a first boundary between the background member and a shadow of the object; detect a second boundary between the object and the shadow of the object in the image information; and detect an inclination of the object in the image information from the first boundary and the second boundary detected by the processing circuitry.
    Type: Grant
    Filed: January 29, 2020
    Date of Patent: September 7, 2021
    Assignee: RICOH COMPANY, LTD.
    Inventors: Hajime Tsukahara, Hiroki Shirado, Ayumu Hashimoto, Yuuki Nakada, Tomohiko Ono, Tatsuya Ozaki, Hiroshi Kubo, Yoshiaki Nagao, Kimiharu Yanagisawa, Masahiro Itoh
  • Patent number: 11102375
    Abstract: A sheet reading apparatus includes a sheet table on which a sheet is placed, a conveyor configured to convey the sheet, a reading guide configured to guide the sheet conveyed by the conveyor, and a reading device configured to read a shadow of the sheet conveyed by the conveyor, for detection of an inclination of the sheet. The sheet reading apparatus further includes a transparent member disposed at a position on a reading line of the reading device. The position on the reading line is withdrawn from the sheet and adjacent to the reading guide.
    Type: Grant
    Filed: October 16, 2019
    Date of Patent: August 24, 2021
    Assignee: RICOH COMPANY, LTD.
    Inventors: Hiroshi Kubo, Kimiharu Yanagisawa, Hajime Tsukahara, Yoshiaki Nagao, Masahiro Itoh, Tatsuya Ozaki, Tomohiko Ono, Yuuki Nakada, Hiroki Shirado, Ayumu Hashimoto
  • Patent number: 11102365
    Abstract: An edge detecting device includes processing circuitry. The processing circuitry is configured to acquire first color information and second color information in an image including a document region and a background region outside the document region. The first color information is color information of the background region and the second color information is color information of the document region. The processing circuitry is configured to detect a boundary between the background region and the document region from a change in color information between the first color information and the second color information.
    Type: Grant
    Filed: April 7, 2020
    Date of Patent: August 24, 2021
    Assignee: RICOH COMPANY, LTD.
    Inventors: Tomohiko Ono, Hajime Tsukahara, Hiroki Shirado, Ayumu Hashimoto, Yuuki Nakada, Tatsuya Ozaki, Hiroshi Kubo, Yoshiaki Nagao, Kimiharu Yanagisawa, Masahiro Itoh
  • Patent number: 11102364
    Abstract: An inclination detecting device includes processing circuitry. The processing circuitry is configured to detect, in image information that is an image of an object imaged by an imaging device at an imaging position where a background member forms a background, a first boundary between the background member and a shadow of the object at detection positions in at least one of main-scanning and sub-scanning directions on an outline of the object; detect a second boundary between the object and the shadow of the object at detection positions in at least one of the main-scanning and sub-scanning directions on the outline of the object in the image information; detect a boundary group including detection results of the second boundary at the detection positions; and detect an inclination of the object in the image information from detection results of the first boundary, the second boundary, and the boundary group.
    Type: Grant
    Filed: January 30, 2020
    Date of Patent: August 24, 2021
    Assignee: RICOH COMPANY, LTD.
    Inventors: Yuuki Nakada, Hajime Tsukahara, Hiroki Shirado, Ayumu Hashimoto, Tomohiko Ono, Tatsuya Ozaki, Hiroshi Kubo, Yoshiaki Nagao, Kimiharu Yanagisawa, Masahiro Itoh
  • Patent number: 10951791
    Abstract: An image processing apparatus includes circuitry to: obtain a read image read from an image of a document output from an image reading device; detect an edge between a background area and a document area in the read image; sample a detection result of the edge at each first interval in a first direction to extract a first boundary point group including a plurality of boundary points; sample the detection result of the edge at each second interval in the first direction to extract a second boundary point group including a plurality of boundary points; determine a noise removal condition based on the first boundary point group; remove, from the second boundary point group, a boundary point satisfying the noise removal condition as noise; and calculate a linear equation approximating the second boundary point group from which the noise is removed.
    Type: Grant
    Filed: February 25, 2020
    Date of Patent: March 16, 2021
    Assignee: Ricoh Company, Ltd.
    Inventors: Ayumu Hashimoto, Hajime Tsukahara, Hiroki Shirado, Yuuki Nakada, Tomohiko Ono, Tatsuya Ozaki, Hiroshi Kubo, Kimiharu Yanagisawa, Yoshiaki Nagao, Masahiro Itoh
  • Publication number: 20200336615
    Abstract: An edge detecting device includes processing circuitry. The processing circuitry is configured to acquire first color information and second color information in an image including a document region and a background region outside the document region. The first color information is color information of the background region and the second color information is color information of the document region. The processing circuitry is configured to detect a boundary between the background region and the document region from a change in color information between the first color information and the second color information.
    Type: Application
    Filed: April 7, 2020
    Publication date: October 22, 2020
    Inventors: Tomohiko ONO, Hajime TSUKAHARA, Hiroki SHIRADO, Ayumu HASHIMOTO, Yuuki NAKADA, Tatsuya OZAKI, Hiroshi KUBO, Yoshiaki NAGAO, Kimiharu YANAGISAWA, Masahiro ITOH
  • Publication number: 20200296255
    Abstract: An image processing apparatus includes circuitry to: obtain a read image read from an image of a document output from an image reading device; detect an edge between a background area and a document area in the read image; sample a detection result of the edge at each first interval in a first direction to extract a first boundary point group including a plurality of boundary points; sample the detection result of the edge at each second interval in the first direction to extract a second boundary point group including a plurality of boundary points; determine a noise removal condition based on the first boundary point group; remove, from the second boundary point group, a boundary point satisfying the noise removal condition as noise; and calculate a linear equation approximating the second boundary point group from which the noise is removed.
    Type: Application
    Filed: February 25, 2020
    Publication date: September 17, 2020
    Applicant: Ricoh Company, Ltd.
    Inventors: AYUMU HASHIMOTO, HAJIME TSUKAHARA, HIROKI SHIRADO, YUUKI NAKADA, TOMOHIKO ONO, TATSUYA OZAKI, HIROSHI KUBO, KIMIHARU YANAGISAWA, YOSHIAKI NAGAO, MASAHIRO ITOH
  • Publication number: 20200252513
    Abstract: An inclination detecting device includes processing circuitry. The processing circuitry is configured to detect, in image information that is an image of an object imaged by an imaging device at an imaging position where a background member forms a background, a first boundary between the background member and a shadow of the object at detection positions in at least one of main-scanning and sub-scanning directions on an outline of the object; detect a second boundary between the object and the shadow of the object at detection positions in at least one of the main-scanning and sub-scanning directions on the outline of the object in the image information; detect a boundary group including detection results of the second boundary at the detection positions; and detect an inclination of the object in the image information from detection results of the first boundary, the second boundary, and the boundary group.
    Type: Application
    Filed: January 30, 2020
    Publication date: August 6, 2020
    Inventors: Yuuki NAKADA, Hajime TSUKAHARA, Hiroki SHIRADO, Ayumu HASHIMOTO, Tomohiko ONO, Tatsuya OZAKI, Hiroshi KUBO, Yoshiaki NAGAO, Kimiharu YANAGISAWA, Masahiro ITOH
  • Publication number: 20200244837
    Abstract: An inclination detecting device includes processing circuitry. The processing circuitry is configured to detect, in image information that is an image of an object imaged by an imaging device at an imaging position where a background member forms a background, a first boundary between the background member and a shadow of the object; detect a second boundary between the object and the shadow of the object in the image information; and detect an inclination of the object in the image information from the first boundary and the second boundary detected by the processing circuitry.
    Type: Application
    Filed: January 29, 2020
    Publication date: July 30, 2020
    Inventors: Hajime TSUKAHARA, Hiroki SHIRADO, Ayumu HASHIMOTO, Yuuki NAKADA, Tomohiko ONO, Tatsuya OZAKI, Hiroshi KUBO, Yoshiaki NAGAO, Kimiharu YANAGISAWA, Masahiro ITOH
  • Publication number: 20200137262
    Abstract: A sheet reading apparatus includes a sheet table on which a sheet is placed, a conveyor configured to convey the sheet, a reading guide configured to guide the sheet conveyed by the conveyor, and a reading device configured to read a shadow of the sheet conveyed by the conveyor, for detection of an inclination of the sheet. The sheet reading apparatus further includes a transparent member disposed at a position on a reading line of the reading device. The position on the reading line is withdrawn from the sheet and adjacent to the reading guide.
    Type: Application
    Filed: October 16, 2019
    Publication date: April 30, 2020
    Inventors: Hiroshi KUBO, Kimiharu YANAGISAWA, Hajime TSUKAHARA, Yoshiaki NAGAO, Masahiro ITOH, Tatsuya OZAKI, Tomohiko ONO, Yuuki NAKADA, Hiroki SHIRADO, Ayumu HASHIMOTO
  • Patent number: 9729766
    Abstract: A hinge structure, comprising a plurality of bearings each of which has a cylindrical body formed by using a molding die, and a shaft member rotatably supported by the plurality of bearings.
    Type: Grant
    Filed: May 7, 2015
    Date of Patent: August 8, 2017
    Assignee: RICOH IMAGING COMPANY, LTD.
    Inventor: Kimiharu Yanagisawa
  • Publication number: 20150334273
    Abstract: A hinge structure, comprising a plurality of bearings each of which has a cylindrical body formed by using a molding die, and a shaft member rotatably supported by the plurality of bearings.
    Type: Application
    Filed: May 7, 2015
    Publication date: November 19, 2015
    Applicant: RICOH IMAGING COMPANY, LTD.
    Inventor: Kimiharu YANAGISAWA
  • Patent number: 8253842
    Abstract: An electronic device includes: at least one switch which is arranged at a printed circuit board; at least one operation member which is capable of pressing the at least one switch; a support member which has at least one arm part configured to support the at least one operation member movably; and an exterior member which abuts to the support member and has at least one hole into which the at least one operation member is inserted, wherein the support member further has at least one positioning member which is uncovered by the exterior member.
    Type: Grant
    Filed: June 17, 2009
    Date of Patent: August 28, 2012
    Assignee: Ricoh Company, Ltd.
    Inventors: Norihiro Yoshida, Kimiharu Yanagisawa
  • Patent number: 8009228
    Abstract: A camera includes a direction indicating switch to specify an arbitrary indicating direction which is attached to a case member. The direction indicating switch has a switch base having a contact point which is capable of abutting intermittently; an operating section held by the switch base to be capable of tilting for tilting for intermittently abutting of the contact point; and a tilt controlling section which controls a tilt of the operating section. The operating section is capable of tilting in a radial direction from a reference position where the contact point is in a nonconductive state. When the operating section is tilted over a predetermined angle from the reference position, the contact point is in a conductive state.
    Type: Grant
    Filed: July 8, 2008
    Date of Patent: August 30, 2011
    Assignee: Ricoh Company, Ltd.
    Inventors: Tomonori Kimura, Kimiharu Yanagisawa
  • Publication number: 20090316039
    Abstract: An electronic device includes: at least one switch which is arranged at a printed circuit board; at least one operation member which is capable of pressing the at least one switch; a support member which has at least one arm part configured to support the at least one operation member movably; and an exterior member which abuts to the support member and has at least one hole into which the at least one operation member is inserted, wherein the support member further has at least one positioning member which is uncovered by the exterior member.
    Type: Application
    Filed: June 17, 2009
    Publication date: December 24, 2009
    Inventors: Norihiro Yoshida, Kimiharu Yanagisawa
  • Publication number: 20090015709
    Abstract: A camera includes a direction indicating switch to specify an arbitrary indicating direction which is attached to a case member. The direction indicating switch has a switch base having a contact point which is capable of abutting intermittently; an operating section held by the switch base to be capable of tilting for tilting for intermittently abutting of the contact point; and a tilt controlling section which controls a tilt of the operating section. The operating section is capable of tilting in a radial direction from a reference position where the contact point is in a nonconductive state. When the operating section is tilted over a predetermined angle from the reference position, the contact point is in a conductive state.
    Type: Application
    Filed: July 8, 2008
    Publication date: January 15, 2009
    Inventors: Tomonori Kimura, Kimiharu Yanagisawa
  • Publication number: 20050200737
    Abstract: A protective structure for a display unit including the display unit for displaying an image, and a plate-like protective member disposed at a side of a surface of the display unit on which the image is displayed for protecting the display surface of the display unit, wherein the protective member is directly fixed to the display unit.
    Type: Application
    Filed: February 14, 2005
    Publication date: September 15, 2005
    Inventors: Junichi Shinohara, Koji Yokoyama, Kimiharu Yanagisawa