Patents by Inventor Michiharu Suzuki

Michiharu Suzuki 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: 10409196
    Abstract: An image forming apparatus includes an intermediate transferor to rotate in a predetermined rotation direction, a plurality of image bearers disposed along the intermediate transferor to bear latent images, a plurality of developing devices to develop the latent images, a plurality of developer containers to contain developers, and a plurality of conveyance paths each corresponding to a respective one of the plurality of developing devices and a respective one of the plurality of developer containers to supply the developers to the plurality of developing devices respectively. An arrangement of the plurality of developing devices in the predetermined rotation direction is configured to be changed without changing an arrangement of the plurality of developer containers. A layout of the plurality of conveyance paths is configured to be changed without changing connections between a supply source and a supply destination of the plurality of conveyance paths.
    Type: Grant
    Filed: May 10, 2018
    Date of Patent: September 10, 2019
    Assignee: RICOH COMPANY, LTD.
    Inventors: Toshio Koike, Jun Shiori, Teppei Kikuchi, Michiharu Suzuki, Kazuhiro Aso, Keinosuke Kondoh, Tadashi Ogawa, Hideo Yoshizawa
  • Publication number: 20190227479
    Abstract: An image forming apparatus includes an apparatus body, a removable component configured to be removably installed in an installation position in the apparatus body, a cover configured to open and close when the removable component is removed from or installed in the installation position, a replacement removable component configured to be installable in and removable from the installation position in which the removable component is installed, and a holder configured to hold the replacement removable component at a different position from the installation position when the removable component is installed in the installation position and the cover opens. The replacement removable component held by the holder is configured to inhibit the cover from closing.
    Type: Application
    Filed: January 3, 2019
    Publication date: July 25, 2019
    Applicant: RICOH COMPANY, LTD.
    Inventors: Michiharu SUZUKI, Jun SHIORI, Hideo YOSHIZAWA, Toshio KOIKE, Teppei KIKUCHI, Kazuhiro ASO, Keinosuke KONDOH
  • Publication number: 20190219951
    Abstract: A developing device includes a developer bearer opposed to an image bearer, configured to bear developer and rotate in a direction of rotation of the developer bearer, and configured to develop a latent image on the image bearer and a casing opposed to the developer bearer at a position downstream from an opposed position, at which the developer bearer is opposed to the image bearer, in the direction of rotation of the developer bearer. A casing gap between the developer bearer and the casing continuously decreases or increases from a first end of the developing device to a second end of the developing device across a center of the developing device in a longitudinal direction of the developing device.
    Type: Application
    Filed: December 5, 2018
    Publication date: July 18, 2019
    Inventors: Toshio KOIKE, Jun Shiori, Hideo Yoshizawa, Keinosuke Kondoh, Teppei Kikuchi, Kazuhiro Aso, Michiharu Suzuki
  • Publication number: 20190212668
    Abstract: An image forming apparatus includes image bearers, developing devices, developer containers, and developer supply devices. The image bearers are arranged side by side along a movement direction of an intermediate transferor or a sheet. The developing devices, the developer containers, and the developer supply devices are configured to be rearrangeable for each color in the movement direction in a manner that one or each of a developing device, a developer container, and a developer supply device corresponding to each color of the different colors is detached from and attached to the image forming apparatus, separately from a rest of the developing device, the developer container, and the developer supply device. The image forming apparatus is configured to be available for use when colors of the developing device, the developer container, and the developer supply device correspond to each other after rearrangement.
    Type: Application
    Filed: November 23, 2018
    Publication date: July 11, 2019
    Inventors: Toshio KOIKE, Teppei KIKUCHI, Michiharu SUZUKI, Keinosuke KONDOH, Jun SHIORI, Kazuhiro ASO
  • Patent number: 10203633
    Abstract: An image forming apparatus includes an intermediate transferor, a plurality of image bearers, a plurality of developing devices, a plurality of developer containers, a plurality of conveyance paths, and a plurality of sub-hoppers. At least one set of an image bearer, a developing device, and a sub-hopper is disposed at a height different from other sets. The arrangement of the plurality of developing devices and the plurality of sub-hoppers in the rotation direction of the intermediate transferor is changed while satisfying the following. The arrangement of the plurality of developer containers is not changed and the connections between the plurality of developing devices and the plurality of sub-hoppers are not change, while the layout of the plurality of tubes as the plurality of conveyance paths is changed so that the connections between the plurality of tubes and the plurality of sub-hoppers are not changed.
    Type: Grant
    Filed: April 19, 2018
    Date of Patent: February 12, 2019
    Assignee: Ricoh Company, Ltd.
    Inventors: Michiharu Suzuki, Hideo Yoshizawa, Jun Shiori, Toshio Koike, Kazuhiro Aso, Teppei Kikuchi, Keinosuke Kondoh
  • Publication number: 20180335721
    Abstract: An image forming apparatus includes an intermediate transferor to rotate in a predetermined rotation direction, a plurality of image bearers disposed along the intermediate transferor to bear latent images, a plurality of developing devices to develop the latent images, a plurality of developer containers to contain developers, and a plurality of conveyance paths each corresponding to a respective one of the plurality of developing devices and a respective one of the plurality of developer containers to supply the developers to the plurality of developing devices respectively. An arrangement of the plurality of developing devices in the predetermined rotation direction is configured to be changed without changing an arrangement of the plurality of developer containers. A layout of the plurality of conveyance paths is configured to be changed without changing connections between a supply source and a supply destination of the plurality of conveyance paths.
    Type: Application
    Filed: May 10, 2018
    Publication date: November 22, 2018
    Inventors: Toshio KOIKE, Jun SHIORI, Teppei KIKUCHI, Michiharu SUZUKI, Kazuhiro ASO, Keinosuke KONDOH, Tadashi OGAWA, Hideo YOSHIZAWA
  • Patent number: 10133210
    Abstract: A nozzle receiver is to be arranged in a powder container used in an image forming apparatus. The nozzle receiver includes a nozzle receiving opening, in which a conveying nozzle for conveying powder supplied from the powder container is inserted in the image forming apparatus; an opening/closing member to open and to close the nozzle receiving opening; and a supporter to support the opening/closing member. The opening/closing member includes a sealing portion to seal the nozzle insertion opening. The supporter includes an end surface portion perpendicular to a moving direction of the opening/closing member. The projection area of the end surface portion in the moving direction of the opening/closing member is smaller than a projection area of the sealing portion in the moving direction of the opening/closing member.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: November 20, 2018
    Assignee: RICOH COMPANY, LIMITED
    Inventors: Junji Yamabe, Keiichi Yano, Michiharu Suzuki, Hideki Kimura, Hideki Zemba, Takahiro Ikuma, Seiji Terazawa
  • Publication number: 20180321615
    Abstract: An image forming apparatus includes an intermediate transferor, a plurality of image bearers, a plurality of developing devices, a plurality of developer containers, a plurality of conveyance paths, and a plurality of sub-hoppers. At least one set of an image bearer, a developing device, and a sub-hopper is disposed at a height different from other sets. The arrangement of the plurality of developing devices and the plurality of sub-hoppers in the rotation direction of the intermediate transferor is changed while satisfying the following. The arrangement of the plurality of developer containers is not changed and the connections between the plurality of developing devices and the plurality of sub-hoppers are not change, while the layout of the plurality of tubes as the plurality of conveyance paths is changed so that the connections between the plurality of tubes and the plurality of sub-hoppers are not changed.
    Type: Application
    Filed: April 19, 2018
    Publication date: November 8, 2018
    Inventors: Michiharu SUZUKI, Hideo YOSHIZAWA, Jun SHIORI, Toshio KOIKE, Kazuhiro ASO, Teppei KIKUCHI, Keinosuke KONDOH
  • Publication number: 20170102638
    Abstract: A nozzle receiver is to be arranged in a powder container used in an image forming apparatus. The nozzle receiver includes a nozzle receiving opening, in which a conveying nozzle for conveying powder supplied from the powder container is inserted in the image forming apparatus; an opening/closing member to open and to close the nozzle receiving opening; and a supporter to support the opening/closing member. The opening/closing member includes a sealing portion to seal the nozzle insertion opening. The supporter includes an end surface portion perpendicular to a moving direction of the opening/closing member. The projection area of the end surface portion in the moving direction of the opening/closing member is smaller than a projection area of the sealing portion in the moving direction of the opening/closing member.
    Type: Application
    Filed: December 22, 2016
    Publication date: April 13, 2017
    Inventors: Junji YAMABE, Keiichi YANO, Michiharu SUZUKI, Hideki KIMURA, Hideki ZEMBA, Takahiro IKUMA, Seiji TERAZAWA
  • Publication number: 20170068184
    Abstract: A powder container contains powder and is attached to an image forming apparatus including: a conveying nozzle to convey the powder; a powder receiving hole of the conveying nozzle to receive the powder from the powder container; an apparatus main-body gear to transmit a driving force to the powder container; and a container receiving section including the conveying nozzle and receiving the powder container. The powder container includes: an opening at one end of the powder container in a longitudinal direction; a nozzle receiver at the opening to receive the conveying nozzle; a conveyor to convey the powder; and a container gear to drive the conveyor by meshing with the apparatus main-body gear. The container gear is to mesh with the apparatus main-body gear at a position closer to the opening than the powder receiving hole in the longitudinal direction. The opening is to mate with the container receiving section.
    Type: Application
    Filed: November 2, 2016
    Publication date: March 9, 2017
    Inventors: Kenji KIKUCHI, Shinji TAMAKI, Hiroshi HOSOKAWA, Shunji KATOH, Michiharu SUZUKI, Hideo YOSHIZAWA, Shingo KUBOKl
  • Patent number: 9557685
    Abstract: A nozzle receiver is to be arranged in a powder container used in an image forming apparatus. The nozzle receiver includes a nozzle receiving opening, in which a conveying nozzle for conveying powder supplied from the powder container is inserted in the image forming apparatus; an opening/closing member to open and to close the nozzle receiving opening; and a supporter to support the opening/closing member. The opening/closing member includes a sealing portion to seal the nozzle insertion opening. The supporter includes an end surface portion perpendicular to a moving direction of the opening/closing member. The projection area of the end surface portion in the moving direction of the opening/closing member is smaller than a projection area of the sealing portion in the moving direction of the opening/closing member.
    Type: Grant
    Filed: March 16, 2015
    Date of Patent: January 31, 2017
    Assignee: RICOH COMPANY, LIMITED
    Inventors: Junji Yamabe, Keiichi Yano, Michiharu Suzuki, Hideki Kimura, Hideki Zemba, Takahiro Ikuma, Seiji Terazawa
  • Patent number: 9513576
    Abstract: A powder container contains powder and is attached to an image forming apparatus including: a conveying nozzle to convey the powder; a powder receiving hole of the conveying nozzle to receive the powder from the powder container; an apparatus main-body gear to transmit a driving force to the powder container; and a container receiving section including the conveying nozzle and receiving the powder container. The powder container includes: an opening at one end of the powder container in a longitudinal direction; a nozzle receiver at the opening to receive the conveying nozzle; a conveyor to convey the powder; and a container gear to drive the conveyor by meshing with the apparatus main-body gear. The container gear is to mesh with the apparatus main-body gear at a position closer to the opening than the powder receiving hole in the longitudinal direction. The opening is to mate with the container receiving section.
    Type: Grant
    Filed: September 15, 2015
    Date of Patent: December 6, 2016
    Assignee: Ricoh Company, Ltd.
    Inventors: Kenji Kikuchi, Shinji Tamaki, Hiroshi Hosokawa, Shunji Katoh, Michiharu Suzuki, Hideo Yoshizawa, Shingo Kuboki
  • Patent number: 9448507
    Abstract: A nozzle receiver for use with a powder container includes: a shutter to open an opening of the nozzle receiver to an opening position when the shutter is pressed by a conveying nozzle of an image forming apparatus, and to close the opening to a closing position when not being pressed by the conveying nozzle, and that includes a sealing portion for sealing the opening; a supporter to support and guide the shutter between the opening position and the closing position; and a cap to cover the supporter when the shutter is located at the closing position.
    Type: Grant
    Filed: August 21, 2015
    Date of Patent: September 20, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventor: Michiharu Suzuki
  • Patent number: 9348259
    Abstract: A toner housing container includes a container body housing a toner; a conveying portion conveying the toner from one end of the container body, in a longer direction of the container body, to its other end at which a container opening portion is provided; a pipe receiving port receiving a conveying pipe fixed to a toner conveying device; and an uplifting portion moving the toner toward a toner receiving port of conveying pipe. Such toner has a molecular weight distribution having a peak in a range of 103 to 104, and has C/R of from 0.03 to 0.55 between peak height C attributed to crystalline polyester resin and R attributed to non-crystalline resin when measured by FT-IR after stored at 45° C. for 12 hours.
    Type: Grant
    Filed: May 15, 2014
    Date of Patent: May 24, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventors: Masashi Nagayama, Hisashi Nakajima, Yoshitaka Sekiguchi, Saori Yamada, Shinya Hanatani, Mariko Takii, Hiroshi Hosokawa, Shunji Katoh, Shinji Tamaki, Hiroshi Ikeguchi, Kenji Kikuchi, Michiharu Suzuki
  • Publication number: 20160124346
    Abstract: A nozzle receiver is to be arranged in a powder container used in an image forming apparatus. The nozzle receiver includes a nozzle receiving opening, in which a conveying nozzle for conveying powder supplied from the powder container is inserted in the image forming apparatus; an opening/closing member to open and to close the nozzle receiving opening; and a supporter to support the opening/closing member. The opening/closing member includes a sealing portion to seal the nozzle insertion opening. The supporter includes an end surface portion perpendicular to a moving direction of the opening/closing member. The projection area of the end surface portion in the moving direction of the opening/closing member is smaller than a projection area of the sealing portion in the moving direction of the opening/closing member.
    Type: Application
    Filed: March 16, 2015
    Publication date: May 5, 2016
    Inventors: Junji YAMABE, Keiichi YANO, Michiharu SUZUKI, Hideki KIMURA, Hideki ZEMBA, Takahiro IKUMA, Seiji TERAZAWA
  • Publication number: 20160070204
    Abstract: A nozzle receiver for use with a powder container includes: a shutter to open an opening of the nozzle receiver to an opening position when the shutter is pressed by a conveying nozzle of an image forming apparatus, and to close the opening to a closing position when not being pressed by the conveying nozzle, and that includes a sealing portion for sealing the opening; a supporter to support and guide the shutter between the opening position and the closing position; and a cap to cover the supporter when the shutter is located at the closing position.
    Type: Application
    Filed: August 21, 2015
    Publication date: March 10, 2016
    Inventor: Michiharu Suzuki
  • Patent number: D781373
    Type: Grant
    Filed: January 9, 2015
    Date of Patent: March 14, 2017
    Assignee: RICOH COMPANY, LTD.
    Inventor: Michiharu Suzuki
  • Patent number: D793472
    Type: Grant
    Filed: January 9, 2015
    Date of Patent: August 1, 2017
    Assignee: RICOH COMPANY, LTD.
    Inventor: Michiharu Suzuki
  • Patent number: D794116
    Type: Grant
    Filed: January 9, 2015
    Date of Patent: August 8, 2017
    Assignee: RICOH COMPANY, LTD.
    Inventor: Michiharu Suzuki
  • Patent number: D794117
    Type: Grant
    Filed: January 9, 2015
    Date of Patent: August 8, 2017
    Assignee: RICOH COMPANY, LTD.
    Inventor: Michiharu Suzuki