Patents by Inventor Kunihiro Ohyama

Kunihiro Ohyama 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: 11366410
    Abstract: A developer container to store developer includes a rotator, a bearing, and a seal. The rotator includes a rotary shaft made of metal. The bearing supports the rotary shaft. The seal is made of fiber, disposed toward an inside of the developer container in the bearing, and contacts an outer circumferential surface of the rotary shaft.
    Type: Grant
    Filed: May 11, 2021
    Date of Patent: June 21, 2022
    Assignee: RICOH COMPANY, LTD.
    Inventors: Naohiro Kawashima, Kei Saito, Kentarou Matsumoto, Kunihiro Ohyama
  • Patent number: 11275327
    Abstract: A toner container includes a container body, an opening, a cover, a toner discharge port, a shutter, a cylindrical structure, protrusions, and an identifier. The shutter is attached to the cover and includes a main shutter covering the toner discharge port. The main shutter moves between a closed position to close the toner discharge port and an open position to open the toner discharge port. The protrusions are on both sides of the cover and protrude in a direction orthogonal to a toner container mounting direction. The identifier is on the cover to indicate a toner color. The cylindrical structure's leading end is downstream of leading ends of the protrusions in the mounting direction. The main shutter's leading end is downstream of the protrusions' leading ends in the mounting direction when the main shutter is in the closed position. The protrusions are downstream of the identifier in the mounting direction.
    Type: Grant
    Filed: July 27, 2021
    Date of Patent: March 15, 2022
    Assignee: RICOH COMPANY, LTD.
    Inventors: Yasufumi Takahashi, Kunihiro Ohyama, Masayuki Yamane, Takeshi Uchitani, Tadashi Hayakawa, Takuji Takahashi, Shouji Okabe, Akira Shinshi, Yuichiro Ueda, Masaki Takahashi, Yuuki Satoh
  • Patent number: 11188007
    Abstract: A toner container includes a container body, an opening, a cover, a toner discharge port, a shutter, a cylindrical structure, protrusions, and an identifier. The shutter is attached to the cover and includes a main shutter covering the toner discharge port. The main shutter moves between a closed position to close the toner discharge port and an open position to open the toner discharge port. The protrusions are on both sides of the cover and protrude in a direction orthogonal to a toner container mounting direction. The identifier is on the cover to indicate a toner color. The cylindrical structure's leading end is downstream of leading ends of the protrusions in the mounting direction. The main shutter's leading end is downstream of the protrusions' leading ends in the mounting direction when the main shutter is in the closed position. The protrusions are downstream of the identifier in the mounting direction.
    Type: Grant
    Filed: July 15, 2020
    Date of Patent: November 30, 2021
    Assignee: RICOH COMPANY, LTD.
    Inventors: Yasufumi Takahashi, Kunihiro Ohyama, Masayuki Yamane, Takeshi Uchitani, Tadashi Hayakawa, Takuji Takahashi, Shouji Okabe, Akira Shinshi, Yuichiro Ueda, Masaki Takahashi, Yuuki Satoh
  • Publication number: 20210364950
    Abstract: A developer container to store developer includes a rotator, a bearing, and a seal. The rotator includes a rotary shaft made of metal. The bearing supports the rotary shaft. The seal is made of fiber, disposed toward an inside of the developer container in the bearing, and contacts an outer circumferential surface of the rotary shaft.
    Type: Application
    Filed: May 11, 2021
    Publication date: November 25, 2021
    Applicant: Ricoh Company, Ltd.
    Inventors: Naohiro KAWASHIMA, Kei SAITO, Kentarou MATSUMOTO, Kunihiro OHYAMA
  • Publication number: 20210364942
    Abstract: A developing device configured to develop a latent image formed on a surface of an image bearer includes a rotator, a bearing, a holder, a first regulator, and a second regulator. The rotator includes a rotation shaft. The bearing supports the rotation shaft. The holder holds the bearing. The first regulator, disposed on any one of the bearing and the holder, regulates movement of the bearing such that the bearing does not fall toward one end side in an axial direction of the rotation shaft relative to the holder. The second regulator regulates movement of the bearing such that the bearing does not fall toward another end side in the axial direction relative to the holder after the bearing is attached to the holder.
    Type: Application
    Filed: May 14, 2021
    Publication date: November 25, 2021
    Applicant: Ricoh Company, Ltd.
    Inventors: Kei SAITO, Kunihiro OHYAMA, Kentarou MATSUMOTO, Naohiro KAWASHIMA
  • Publication number: 20210356884
    Abstract: A toner container includes a container body, an opening, a cover, a toner discharge port, a shutter, a cylindrical structure, protrusions, and an identifier. The shutter is attached to the cover and includes a main shutter covering the toner discharge port. The main shutter moves between a closed position to close the toner discharge port and an open position to open the toner discharge port. The protrusions are on both sides of the cover and protrude in a direction orthogonal to a toner container mounting direction. The identifier is on the cover to indicate a toner color. The cylindrical structure's leading end is downstream of leading ends of the protrusions in the mounting direction. The main shutter's leading end is downstream of the protrusions' leading ends in the mounting direction when the main shutter is in the closed position. The protrusions are downstream of the identifier in the mounting direction.
    Type: Application
    Filed: July 27, 2021
    Publication date: November 18, 2021
    Applicant: Ricoh Company, Ltd.
    Inventors: Yasufumi TAKAHASHI, Kunihiro OHYAMA, Masayuki YAMANE, Takeshi UCHITANI, Tadashi HAYAKAWA, Takuji TAKAHASHI, Shouji OKABE, Akira SHINSHI, Yuichiro UEDA, Masaki TAKAHASHI, Yuuki SATOH
  • Publication number: 20210088933
    Abstract: A toner container includes a container body, an opening, a cover, a toner discharge port, a shutter, a cylindrical structure, protrusions, and an identifier. The shutter is attached to the cover and includes a main shutter covering the toner discharge port. The main shutter moves between a closed position to close the toner discharge port and an open position to open the toner discharge port. The protrusions are on both sides of the cover and protrude in a direction orthogonal to a toner container mounting direction. The identifier is on the cover to indicate a toner color. The cylindrical structure's leading end is downstream of leading ends of the protrusions in the mounting direction. The main shutter's leading end is downstream of the protrusions' leading ends in the mounting direction when the main shutter is in the closed position. The protrusions are downstream of the identifier in the mounting direction.
    Type: Application
    Filed: December 3, 2020
    Publication date: March 25, 2021
    Applicant: Ricoh Company, Ltd.
    Inventors: Yasufumi TAKAHASHI, Kunihiro OHYAMA, Masayuki YAMANE, Takeshi UCHITANI, Tadashi HAYAKAWA, Takuji TAKAHASHI, Shouji OKABE, Akira SHINSHI, Yuichiro UEDA, Masaki TAKAHASHI, Yuuki SATOH
  • Publication number: 20200348615
    Abstract: A toner container includes a container body, an opening, a cover, a toner discharge port, a shutter, a cylindrical structure, protrusions, and an identifier. The shutter is attached to the cover and includes a main shutter covering the toner discharge port. The main shutter moves between a closed position to close the toner discharge port and an open position to open the toner discharge port. The protrusions are on both sides of the cover and protrude in a direction orthogonal to a toner container mounting direction. The identifier is on the cover to indicate a toner color. The cylindrical structure's leading end is downstream of leading ends of the protrusions in the mounting direction. The main shutter's leading end is downstream of the protrusions' leading ends in the mounting direction when the main shutter is in the closed position. The protrusions are downstream of the identifier in the mounting direction.
    Type: Application
    Filed: July 15, 2020
    Publication date: November 5, 2020
    Applicant: Ricoh Company, Ltd.
    Inventors: Yasufumi TAKAHASHI, Kunihiro OHYAMA, Masayuki YAMANE, Takeshi UCHITANI, Tadashi HAYAKAWA, Takuji TAKAHASHI, Shouji OKABE, Akira SHINSHI, Yuichiro UEDA, Masaki TAKAHASHI, Yuuki SATOH
  • Patent number: 10754275
    Abstract: A toner container includes a container body, an opening, a cover, a toner discharge port, a shutter, a cylindrical structure, protrusions, and an identifier. The shutter is attached to the cover and includes a main shutter covering the toner discharge port. The main shutter moves between a closed position to close the toner discharge port and an open position to open the toner discharge port. The protrusions are on both sides of the cover and protrude in a direction orthogonal to a toner container mounting direction. The identifier is on the cover to indicate a toner color. The cylindrical structure's leading end is downstream of leading ends of the protrusions in the mounting direction. The main shutter's leading end is downstream of the protrusions' leading ends in the mounting direction when the main shutter is in the closed position. The protrusions are downstream of the identifier in the mounting direction.
    Type: Grant
    Filed: May 3, 2018
    Date of Patent: August 25, 2020
    Assignee: RICOH COMPANY, LTD.
    Inventors: Yasufumi Takahashi, Kunihiro Ohyama, Masayuki Yamane, Takeshi Uchitani, Tadashi Hayakawa, Takuji Takahashi, Shouji Okabe, Akira Shinshi, Yuichiro Ueda, Masaki Takahashi, Yuuki Satoh
  • Patent number: 10725398
    Abstract: A toner container includes a container body, an opening, a cover, a toner discharge port, a shutter, a cylindrical structure, protrusions, and an identifier. The shutter is attached to the cover and includes a main shutter covering the toner discharge port. The main shutter moves between a closed position to close the toner discharge port and an open position to open the toner discharge port. The protrusions are on both sides of the cover and protrude in a direction orthogonal to a toner container mounting direction. The identifier is on the cover to indicate a toner color. The cylindrical structure's leading end is downstream of leading ends of the protrusions in the mounting direction. The main shutter's leading end is downstream of the protrusions' leading ends in the mounting direction when the main shutter is in the closed position. The protrusions are downstream of the identifier in the mounting direction.
    Type: Grant
    Filed: September 27, 2019
    Date of Patent: July 28, 2020
    Assignee: RICOH COMPANY, LTD.
    Inventors: Yasufumi Takahashi, Kunihiro Ohyama, Masayuki Yamane, Takeshi Uchitani, Tadashi Hayakawa, Takuji Takahashi, Shouji Okabe, Akira Shinshi, Yuichiro Ueda, Masaki Takahashi, Yuuki Satoh
  • Publication number: 20200026220
    Abstract: A toner container includes a container body, an opening, a cover, a toner discharge port, a shutter, a cylindrical structure, protrusions, and an identifier. The shutter is attached to the cover and includes a main shutter covering the toner discharge port. The main shutter moves between a closed position to close the toner discharge port and an open position to open the toner discharge port. The protrusions are on both sides of the cover and protrude in a direction orthogonal to a toner container mounting direction. The identifier is on the cover to indicate a toner color. The cylindrical structure's leading end is downstream of leading ends of the protrusions in the mounting direction. The main shutter's leading end is downstream of the protrusions' leading ends in the mounting direction when the main shutter is in the closed position. The protrusions are downstream of the identifier in the mounting direction.
    Type: Application
    Filed: September 27, 2019
    Publication date: January 23, 2020
    Applicant: Ricoh Company, Ltd.
    Inventors: Yasufumi TAKAHASHI, Kunihiro OHYAMA, Masayuki YAMANE, Takeshi UCHITANI, Tadashi HAYAKAWA, Takuji TAKAHASHI, Shouji OKABE, Akira SHINSHI, Yuichiro UEDA, Masaki TAKAHASHI, Yuuki SATOH
  • Patent number: 10496009
    Abstract: A toner container includes a container body, an opening, a cover, a toner discharge port, a shutter, a cylindrical structure, protrusions, and an identifier. The shutter is attached to the cover and includes a main shutter covering the toner discharge port. The main shutter moves between a closed position to close the toner discharge port and an open position to open the toner discharge port. The protrusions are on both sides of the cover and protrude in a direction orthogonal to a toner container mounting direction. The identifier is on the cover to indicate a toner color. The cylindrical structure's leading end is downstream of leading ends of the protrusions in the mounting direction. The main shutter's leading end is downstream of the protrusions' leading ends in the mounting direction when the main shutter is in the closed position. The protrusions are downstream of the identifier in the mounting direction.
    Type: Grant
    Filed: May 3, 2018
    Date of Patent: December 3, 2019
    Assignee: RICOH COMPANY, LTD.
    Inventors: Yasufumi Takahashi, Kunihiro Ohyama, Masayuki Yamane, Takeshi Uchitani, Tadashi Hayakawa, Takuji Takahashi, Shouji Okabe, Akira Shinshi, Yuichiro Ueda, Masaki Takahashi, Yuuki Satoh
  • Publication number: 20180253028
    Abstract: A toner container includes a container body, an opening, a cover, a toner discharge port, a shutter, a cylindrical structure, protrusions, and an identifier. The shutter is attached to the cover and includes a main shutter covering the toner discharge port. The main shutter moves between a closed position to close the toner discharge port and an open position to open the toner discharge port. The protrusions are on both sides of the cover and protrude in a direction orthogonal to a toner container mounting direction. The identifier is on the cover to indicate a toner color. The cylindrical structure's leading end is downstream of leading ends of the protrusions in the mounting direction. The main shutter's leading end is downstream of the protrusions' leading ends in the mounting direction when the main shutter is in the closed position. The protrusions are downstream of the identifier in the mounting direction.
    Type: Application
    Filed: May 3, 2018
    Publication date: September 6, 2018
    Inventors: Yasufumi TAKAHASHI, Kunihiro OHYAMA, Masayuki YAMANE, Takeshi UCHITANI, Tadashi HAYAKAWA, Takuji TAKAHASHI, Shouji OKABE, Akira SHINSHI, Yuichiro UEDA, Masaki TAKAHASHI, Yuuki SATOH
  • Patent number: 9989887
    Abstract: An information storage device installed in a removable device configured to be removably installed in an image forming apparatus body, includes: an information storage unit that stores information communicated between the image forming apparatus body and the removable device; a terminal that comes in contact with a body side terminal; and a substrate that holds the information storage unit and the terminal and includes a hole configured to be engaged with a protruding section installed in the image forming apparatus body. The terminal includes a plurality of terminals each including one of a plurality of metallic plates arranged in a transverse direction thereof. An earth terminal, which comes in contact with a body side earth terminal formed in the protruding section, is formed in the hole. The hole is disposed at a position sandwiched between two metallic plates among the plurality of metallic plates.
    Type: Grant
    Filed: February 10, 2017
    Date of Patent: June 5, 2018
    Assignee: RICOH COMPANY, LTD.
    Inventors: Yasufumi Takahashi, Kunihiro Ohyama, Masayuki Yamane, Takeshi Uchitani, Tadashi Hayakawa, Takuji Takahashi, Shouji Okabe, Akira Shinshi, Yuichiro Ueda, Masaki Takahashi, Yuuki Satoh
  • Publication number: 20170153572
    Abstract: An information storage device installed in a removable device configured to be removably installed in an image forming apparatus body, includes: an information storage unit that stores information communicated between the image forming apparatus body and the removable device; a terminal that comes in contact with a body side terminal; and a substrate that holds the information storage unit and the terminal and includes a hole configured to be engaged with a protruding section installed in the image forming apparatus body. The terminal includes a plurality of terminals each including one of a plurality of metallic plates arranged in a transverse direction thereof. An earth terminal, which comes in contact with a body side earth terminal formed in the protruding section, is formed in the hole. The hole is disposed at a position sandwiched between two metallic plates among the plurality of metallic plates.
    Type: Application
    Filed: February 10, 2017
    Publication date: June 1, 2017
    Inventors: Yasufumi TAKAHASHI, Kunihiro OHYAMA, Masayuki YAMANE, Takeshi UCHITANI, Tadashi HAYAKAWA, Takuji TAKAHASHI, Shouji OKABE, Akira SHINSHI, Yuichiro UEDA, Masaki TAKAHASHI, Yuuki SATOH
  • Patent number: 9599927
    Abstract: An information storage device installed in a removable device configured to be removably installed in an image forming apparatus body, includes: an information storage unit that stores information communicated between the image forming apparatus body and the removable device; a terminal that comes in contact with a body side terminal; and a substrate that holds the information storage unit and the terminal and includes a hole configured to be engaged with a protruding section installed in the image forming apparatus body. The terminal includes a plurality of terminals each including one of a plurality of metallic plates arranged in a transverse direction thereof. An earth terminal, which comes in contact with a body side earth terminal formed in the protruding section, is formed in the hole. The hole is disposed at a position sandwiched between two metallic plates among the plurality of metallic plates.
    Type: Grant
    Filed: June 25, 2015
    Date of Patent: March 21, 2017
    Assignee: RICOH COMPANY, LTD.
    Inventors: Yasufumi Takahashi, Kunihiro Ohyama, Masayuki Yamane, Takeshi Uchitani, Tadashi Hayakawa, Takuji Takahashi, Shouji Okabe, Akira Shinshi, Yuichiro Ueda, Masaki Takahashi, Yuuki Satoh
  • Patent number: 9329526
    Abstract: A developer container removably installable in an apparatus body of an image forming apparatus includes a container body to contain developer, a cap connectable to the container body, the cap including a supply opening, and a flange projecting beyond an outer circumferential surface of the cap in a radial direction extending from a center of a cross section of the container body. The flange is formed along a circumference of the container body and provided between the container body and the cap.
    Type: Grant
    Filed: April 30, 2015
    Date of Patent: May 3, 2016
    Assignee: Ricoh Company, Ltd.
    Inventors: Masaki Takahashi, Kunihiro Ohyama, Hideki Kimura
  • Patent number: 9256158
    Abstract: An information storage device installed in a removable device configured to be removably installed in an image forming apparatus body, includes: an information storage unit that stores information communicated between the image forming apparatus body and the removable device; a terminal that comes in contact with a body side terminal; and a substrate that holds the information storage unit and the terminal and includes a hole configured to be engaged with a protruding section installed in the image forming apparatus body. The terminal includes a plurality of terminals each including one of a plurality of metallic plates arranged in a transverse direction thereof. An earth terminal, which comes in contact with a body side earth terminal formed in the protruding section, is formed in the hole. The hole is disposed at a position sandwiched between two metallic plates among the plurality of metallic plates.
    Type: Grant
    Filed: July 2, 2014
    Date of Patent: February 9, 2016
    Assignee: RICOH COMPANY, LIMITED
    Inventors: Yasufumi Takahashi, Kunihiro Ohyama, Masayuki Yamane, Takeshi Uchitani, Tadashi Hayakawa, Takuji Takahashi, Shouji Okabe, Akira Shinshi, Yuichiro Ueda, Masaki Takahashi, Yuuki Satoh
  • Patent number: D757161
    Type: Grant
    Filed: October 13, 2014
    Date of Patent: May 24, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventors: Yasufumi Takahashi, Kunihiro Ohyama
  • Patent number: D758482
    Type: Grant
    Filed: October 15, 2014
    Date of Patent: June 7, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventors: Yasufumi Takahashi, Kunihiro Ohyama