Patents by Inventor Hideki Tobinaga

Hideki Tobinaga 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: 10968061
    Abstract: An image forming apparatus includes a sheet container accommodating a recording medium therein, a sheet separating feeder including a sheet feeding body and a sheet separating body, an image forming part, and a bend applier. The sheet feeding body feeds the recording medium along with a surface movement thereof while the recording medium contacting the surface thereof. The sheet separating body forms a sheet separation nip region with the sheet feeding body and sandwiches the recording medium in the sheet separation nip region. The sheet separating feeder separates and feeds the recording medium contacting the sheet feeding body. The image forming part forms an image on the recording medium. The bend applier having a leading end of an elastic material contacts and bends the recording medium before the sheet separation nip region and generates a wrinkle extending on the recording medium in a sheet conveying direction.
    Type: Grant
    Filed: October 11, 2018
    Date of Patent: April 6, 2021
    Assignee: RICOH COMPANY, LTD.
    Inventors: Jumpei Aoyama, Manabu Nonaka, Hajime Nishida, Hideki Tobinaga, Junpei Kamichi, Satoshi Kuno, Shun Kobayashi
  • Patent number: 10669109
    Abstract: A sheet end position regulating device, which is included in an image forming apparatus, includes a first contact body disposed movable on a sheet loading portion on which a sheet is loaded and configured to contact an end portion of the sheet, a fixing body disposed movable between a fixing position at which a position of the first contact body to the sheet loading portion is fixed and a releasing position at which the position of the first contact body is released, and a second contact body disposed movable between a contact position at which the fixing body contacts a contact target portion to regulate movement of the fixing body form the fixing position to the releasing position and a non-contact position at which the fixing body does not contact the contact target portion.
    Type: Grant
    Filed: October 17, 2018
    Date of Patent: June 2, 2020
    Assignee: RICOH COMPANY, LTD.
    Inventors: Tsugunao Toyooka, Masayuki Ueda, Hideki Tobinaga, Hajime Nishida
  • Publication number: 20190193968
    Abstract: A sheet end position regulating device, which is included in an image forming apparatus, includes a first contact body disposed movable on a sheet loading portion on which a sheet is loaded and configured to contact an end portion of the sheet, a fixing body disposed movable between a fixing position at which a position of the first contact body to the sheet loading portion is fixed and a releasing position at which the position of the first contact body is released, and a second contact body disposed movable between a contact position at which the fixing body contacts a contact target portion to regulate movement of the fixing body form the fixing position to the releasing position and a non-contact position at which the fixing body does not contact the contact target portion.
    Type: Application
    Filed: October 17, 2018
    Publication date: June 27, 2019
    Applicant: Ricoh Company, Ltd.
    Inventors: Tsugunao TOYOOKA, Masayuki UEDA, Hideki TOBINAGA, Hajime NISHIDA
  • Patent number: 10202250
    Abstract: An image forming apparatus includes a sheet container accommodating a recording medium therein, a sheet separating feeder including a sheet feeding body and a sheet separating body, an image forming part, and a bend applier. The sheet feeding body feeds the recording medium along with a surface movement thereof while the recording medium contacting the surface thereof. The sheet separating body forms a sheet separation nip region with the sheet feeding body and sandwiches the recording medium in the sheet separation nip region. The sheet separating feeder separates and feeds the recording medium contacting the sheet feeding body. The image forming part forms an image on the recording medium. The bend applier having a leading end of an elastic material contacts and bends the recording medium before the sheet separation nip region and generates a wrinkle extending on the recording medium in a sheet conveying direction.
    Type: Grant
    Filed: March 4, 2015
    Date of Patent: February 12, 2019
    Assignee: RICOH COMPANY, LTD.
    Inventors: Jumpei Aoyama, Manabu Nonaka, Hajime Nishida, Hideki Tobinaga, Junpei Kamichi, Satoshi Kuno, Shun Kobayashi
  • Publication number: 20190039842
    Abstract: An image forming apparatus includes a sheet container accommodating a recording medium therein, a sheet separating feeder including a sheet feeding body and a sheet separating body, an image forming part, and a bend applier. The sheet feeding body feeds the recording medium along with a surface movement thereof while the recording medium contacting the surface thereof. The sheet separating body forms a sheet separation nip region with the sheet feeding body and sandwiches the recording medium in the sheet separation nip region. The sheet separating feeder separates and feeds the recording medium contacting the sheet feeding body. The image forming part forms an image on the recording medium. The bend applier having a leading end of an elastic material contacts and bends the recording medium before the sheet separation nip region and generates a wrinkle extending on the recording medium in a sheet conveying direction.
    Type: Application
    Filed: October 11, 2018
    Publication date: February 7, 2019
    Applicant: Ricoh Company, Ltd.
    Inventors: Jumpei AOYAMA, Manabu NONAKA, Hajime NISHIDA, Hideki TOBINAGA, Junpei KAMICHI, Satoshi KUNO, Shun KOBAYASHI
  • Patent number: 10167148
    Abstract: An image forming apparatus includes an image forming unit, a paper loading base on which manual-feed paper is loaded, a manual-feed paper conveying unit, and a dustproof cover which covers the paper loading base being in the overhang state. The paper loading base has a lower end rotatably supported on one outer surface portion of the device main body, and is opened from an upper end thereof and disposed at a predetermined oblique angle or in a horizontal overhang state such that an overhang side becomes an upper side in an oblique direction. The manual-feed paper conveying unit is conveys the manual-feed paper on the paper loading base onto a paper conveyance path one by one. The dustproof cover includes a base which engages with the paper loading base, and an opening-and-closing cover which is rotatably connected to the base and is opened upwardly on the overhang side.
    Type: Grant
    Filed: April 21, 2017
    Date of Patent: January 1, 2019
    Assignee: Ricoh Company, Ltd.
    Inventors: Satoshi Kuno, Hajime Nishida, Hideki Tobinaga, Jumpei Aoyama, Junpei Kamichi, Shun Kobayashi, Manabu Nonaka
  • Patent number: 9869959
    Abstract: An image forming apparatus includes an apparatus body, a sheet container, an image forming part to form an image, a sheet feeding rotary body to feed the recording medium, a sheet separating rotary body to contact the sheet feeding rotary body and rotate with the sheet feeding rotary body with a sheet separation nip region formed therebetween, a rotation adjusting unit to adjust rotation of the sheet separating rotary body, a sheet containing unit to contain the recording media therein, a sheet separating body storing unit disposed at one end of the sheet containing unit to store the sheet separating body therein, and a load resistance applying mechanism to apply a rotational load resistance different from a contact force generated by contacting of the sheet separating rotary body with the sheet feeding rotary body, to the sheet feeding rotary body with no rotation driving force applied thereto.
    Type: Grant
    Filed: January 3, 2017
    Date of Patent: January 16, 2018
    Assignee: Ricoh Company, Ltd.
    Inventors: Hideki Tobinaga, Hajime Nishida, Jumpei Aoyama, Junpei Kamichi, Satoshi Kuno, Shun Kobayashi, Manabu Nonaka
  • Publication number: 20170227911
    Abstract: An image forming apparatus includes an image forming unit, a paper loading base on which manual-feed paper is loaded, a manual-feed paper conveying unit, and a dustproof cover which covers the paper loading base being in the overhang state. The paper loading base has a lower end rotatably supported on one outer surface portion of the device main body, and is opened from an upper end thereof and disposed at a predetermined oblique angle or in a horizontal overhang state such that an overhang side becomes an upper side in an oblique direction. The manual-feed paper conveying unit is conveys the manual-feed paper on the paper loading base onto a paper conveyance path one by one. The dustproof cover includes a base which engages with the paper loading base, and an opening-and-closing cover which is rotatably connected to the base and is opened upwardly on the overhang side.
    Type: Application
    Filed: April 21, 2017
    Publication date: August 10, 2017
    Applicant: Ricoh Company, Ltd.
    Inventors: Satoshi KUNO, Hajime NISHIDA, Hideki TOBINAGA, Jumpei AOYAMA, Junpei KAMICHI, Shun KOBAYASHI, Manabu NONAKA
  • Publication number: 20170115618
    Abstract: An image forming apparatus includes an apparatus body, a sheet container, an image forming part to form an image, a sheet feeding rotary body to feed the recording medium, a sheet separating rotary body to contact the sheet feeding rotary body and rotate with the sheet feeding rotary body with a sheet separation nip region formed therebetween, a rotation adjusting unit to adjust rotation of the sheet separating rotary body, a sheet containing unit to contain the recording media therein, a sheet separating body storing unit disposed at one end of the sheet containing unit to store the sheet separating body therein, and a load resistance applying mechanism to apply a rotational load resistance different from a contact force generated by contacting of the sheet separating rotary body with the sheet feeding rotary body, to the sheet feeding rotary body with no rotation driving force applied thereto.
    Type: Application
    Filed: January 3, 2017
    Publication date: April 27, 2017
    Applicant: Ricoh Company, Ltd.
    Inventors: Hideki TOBINAGA, Hajime Nishida, Jumpei Aoyama, Junpei Kamichi, Satoshi Kuno, Shun Kobayashi, Manabu Nonaka
  • Patent number: 9625866
    Abstract: An image forming apparatus includes an apparatus body, a sheet container detachably attachable to the apparatus body and accommodating recording media therein, an image forming part to form an image on each of the recording media, a sheet separating part to separate the recording media one by one, feed the recording medium toward the image forming part, and include a sheet feeding body and a sheet separating body to rotate in contact with the sheet feeding body and form a sheet separation nip region with the sheet feeding body, a sheet containing unit to contain the recording media therein, and a sheet separating body storing unit disposed at one end of the sheet containing unit to store the sheet separating body therein. The sheet container being pulled out from the apparatus body by moving from the sheet containing unit to the sheet separating body storing unit.
    Type: Grant
    Filed: November 5, 2014
    Date of Patent: April 18, 2017
    Assignee: RICOH COMPANY, LTD.
    Inventors: Jumpei Aoyama, Hajime Nishida, Hideki Tobinaga, Junpei Kamichi, Satoshi Kuno, Shun Kobayashi, Manabu Nonaka
  • Patent number: 9568879
    Abstract: An image forming apparatus includes an apparatus body, a sheet container, an image forming part to form an image, a sheet feeding rotary body to feed the recording medium, a sheet separating rotary body to contact the sheet feeding rotary body and rotate with the sheet feeding rotary body with a sheet separation nip region formed therebetween, a rotation adjusting unit to adjust rotation of the sheet separating rotary body, a sheet containing unit to contain the recording media therein, a sheet separating body storing unit disposed at one end of the sheet containing unit to store the sheet separating body therein, and a load resistance applying mechanism to apply a rotational load resistance different from a contact force generated by contacting of the sheet separating rotary body with the sheet feeding rotary body, to the sheet feeding rotary body with no rotation driving force applied thereto.
    Type: Grant
    Filed: November 10, 2014
    Date of Patent: February 14, 2017
    Assignee: Ricoh Company Ltd.
    Inventors: Hideki Tobinaga, Hajime Nishida, Jumpei Aoyama, Junpei Kamichi, Satoshi Kuno, Shun Kobayashi, Manabu Nonaka
  • Patent number: 9448517
    Abstract: An image forming apparatus includes an image forming part to form an image on a recording medium, an apparatus body, a sheet container detachably attachable to the apparatus body and accommodating the recording medium, a sheet conveying path through which the recording medium is conveyed toward the image forming part, a sheet reentry path disposed above the sheet container and through which the recording medium having the image thereon is conveyed again to the sheet conveying path, a swing unit to swingably move a bottom plate of the sheet reentry path between a first position and a second position, a lock releasing unit to lock and release the bottom plate with respect to the first position of the swing unit, and a release operating unit to cause the lock releasing unit to release the bottom plate from the first position of the swing unit.
    Type: Grant
    Filed: March 4, 2015
    Date of Patent: September 20, 2016
    Assignee: Ricoh Company, Ltd.
    Inventors: Hideki Tobinaga, Hajime Nishida, Satoshi Kuno, Jumpei Aoyama, Junpei Kamichi, Shun Kobayashi
  • Publication number: 20150251864
    Abstract: An image forming apparatus includes a sheet container accommodating a recording medium therein, a sheet separating feeder including a sheet feeding body and a sheet separating body, an image forming part, and a bend applier. The sheet feeding body feeds the recording medium along with a surface movement thereof while the recording medium contacting the surface thereof. The sheet separating body forms a sheet separation nip region with the sheet feeding body and sandwiches the recording medium in the sheet separation nip region. The sheet separating feeder separates and feeds the recording medium contacting the sheet feeding body. The image forming part forms an image on the recording medium. The bend applier having a leading end of an elastic material contacts and bends the recording medium before the sheet separation nip region and generates a wrinkle extending on the recording medium in a sheet conveying direction.
    Type: Application
    Filed: March 4, 2015
    Publication date: September 10, 2015
    Applicant: RICOH COMPANY, LTD.
    Inventors: Jumpei AOYAMA, Manabu NONAKA, Hajime NISHIDA, Hideki TOBINAGA, Junpei KAMICHI, Satoshi KUNO, Shun KOBAYASHI
  • Publication number: 20150253715
    Abstract: An image forming apparatus includes an image forming part to form an image on a recording medium, an apparatus body, a sheet container detachably attachable to the apparatus body and accommodating the recording medium, a sheet conveying path through which the recording medium is conveyed toward the image forming part, a sheet reentry path disposed above the sheet container and through which the recording medium having the image thereon is conveyed again to the sheet conveying path, a swing unit to swingably move a bottom plate of the sheet reentry path between a first position and a second position, a lock releasing unit to lock and release the bottom plate with respect to the first position of the swing unit, and a release operating unit to cause the lock releasing unit to release the bottom plate from the first position of the swing unit.
    Type: Application
    Filed: March 4, 2015
    Publication date: September 10, 2015
    Applicant: RICOH COMPANY, LTD.
    Inventors: Hideki TOBINAGA, Hajime NISHIDA, Satoshi KUNO, Jumpei AOYAMA, Junpei KAMICHI, Shun KOBAYASHI
  • Publication number: 20150132040
    Abstract: An image forming apparatus includes an apparatus body, a sheet container detachably attachable to the apparatus body and accommodating recording media therein, an image forming part to form an image on each of the recording media, a sheet separating part to separate the recording media one by one, feed the recording medium toward the image forming part, and include a sheet feeding body and a sheet separating body to rotate in contact with the sheet feeding body and form a sheet separation nip region with the sheet feeding body, a sheet containing unit to contain the recording media therein, and a sheet separating body storing unit disposed at one end of the sheet containing unit to store the sheet separating body therein. The sheet container being pulled out from the apparatus body by moving from the sheet containing unit to the sheet separating body storing unit.
    Type: Application
    Filed: November 5, 2014
    Publication date: May 14, 2015
    Applicant: RICOH COMPANY, LTD.
    Inventors: Jumpei AOYAMA, Hajime NISHIDA, Hideki TOBINAGA, Junpei KAMICHI, Satoshi KUNO, Shun KOBAYASHI, Manabu NONAKA
  • Publication number: 20150132039
    Abstract: An image forming apparatus includes an apparatus body, a sheet container, an image forming part to form an image, a sheet feeding rotary body to feed the recording medium, a sheet separating rotary body to contact the sheet feeding rotary body and rotate with the sheet feeding rotary body with a sheet separation nip region formed therebetween, a rotation adjusting unit to adjust rotation of the sheet separating rotary body, a sheet containing unit to contain the recording media therein, a sheet separating body storing unit disposed at one end of the sheet containing unit to store the sheet separating body therein, and a load resistance applying mechanism to apply a rotational load resistance different from a contact force generated by contacting of the sheet separating rotary body with the sheet feeding rotary body, to the sheet feeding rotary body with no rotation driving force applied thereto.
    Type: Application
    Filed: November 10, 2014
    Publication date: May 14, 2015
    Applicant: RICOH COMPANY, LTD.
    Inventors: Hideki TOBINAGA, Hajime NISHIDA, Jumpei AOYAMA, Junpei KAMICHI, Satoshi KUNO, Shun KOBAYASHI, Manabu NONAKA
  • Patent number: 8840103
    Abstract: A sheet conveying device includes: a separation sheet feeding mechanism having a paper feeding belt and a separation roller; and an adjustment mechanism that changes contact state of the paper feeding belt to the separation roller by changing relative position of the paper feeding belt and the separation roller, and changes and adjusts separation performance of the separation roller for the subsequent sheet, wherein the adjustment mechanism includes a cam follower member changing the relative position of the feeding belt and the separation roller, the cam member includes a first cam face and a second cam face which are formed at each rotation radius position in accordance with the rotation angle position, and are spaced apart in the rotation radius direction, and the cam follower member has a contact unit guided by the first cam face and the second cam face.
    Type: Grant
    Filed: September 17, 2013
    Date of Patent: September 23, 2014
    Assignee: Ricoh Company, Limited
    Inventors: Takashi Fukumoto, Mamoru Kambayashi, Michitaka Suzuki, Atsushi Fujita, Masataka Fukuchi, Ryuji Yoshida, Hideki Tobinaga, Norio Kimura, Kenichiro Morita, Koki Sakano, Takuya Sano, Takuya Morinaga, Takashi Nakano
  • Patent number: 8755097
    Abstract: An image reading device includes an upstream-side conveying unit configured to convey an original; a reading unit configured to read an image of the original conveyed by the upstream-side conveying unit; and a guide unit arranged between the upstream-side conveying unit and the reading unit to guide the original. As seen from a direction parallel to a reading surface of the reading unit and perpendicular to an original conveying direction in a reading position of the reading unit, an original conveying position for applying a conveying force to the original using the upstream-side conveying unit is arranged in a lower side from the reading position in a direction perpendicular to the reading surface of the reading unit, and the guide unit is configured such that the original passing through the original conveying position is guided to an upper direction.
    Type: Grant
    Filed: March 15, 2012
    Date of Patent: June 17, 2014
    Assignee: Ricoh Company, Limited
    Inventors: Atushi Fujita, Hideki Tobinaga, Takashi Fukumoto, Michitaka Suzuki, Mamoru Kambayashi, Masataka Fukuchi, Kazuki Morita
  • Patent number: 8736926
    Abstract: A sheet conveyance device includes a loading section, a sheet feeding unit, a separation section disposed downstream in a sheet conveyance direction from the sheet feeding unit, a conveyance member to transport a sheet separated by the separation section, a trailing-edge detector disposed at a first conveyance distance (L1) downstream from a separation position (Ab) and including a rotary follower and a rotation detector, a first leading-edge detector disposed downstream from the trailing-edge detector, and a controller. The trailing-edge detector A detects a sheet length in the sheet conveyance direction. The controller causes the sheet feeding unit to start sheet feeding in response to detection of the leading edge of the sheet by the first leading-edge detector when the detected sheet length equals a predetermined reference length and in other cases in response to detection of the trailing edge of the sheet by the trailing-edge detector.
    Type: Grant
    Filed: May 23, 2012
    Date of Patent: May 27, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Yoshito Suzuki, Hideki Tobinaga, Atsushi Kanaya, Shinya Kitaoka, Norio Kimura, Mamoru Kambayashi, Michitaka Suzuki, Kenichiro Morita
  • Publication number: 20140084531
    Abstract: A sheet conveying device includes: a separation sheet feeding mechanism having a paper feeding belt and a separation roller; and an adjustment mechanism that changes contact state of the paper feeding belt to the separation roller by changing relative position of the paper feeding belt and the separation roller, and changes and adjusts separation performance of the separation roller for the subsequent sheet, wherein the adjustment mechanism includes a cam follower member changing the relative position of the feeding belt and the separation roller, the cam member includes a first cam face and a second cam face which are formed at each rotation radius position in accordance with the rotation angle position, and are spaced apart in the rotation radius direction, and the cam follower member has a contact unit guided by the first cam face and the second cam face.
    Type: Application
    Filed: September 17, 2013
    Publication date: March 27, 2014
    Applicant: RICOH COMPANY, LIMITED
    Inventors: Takashi FUKUMOTO, Mamoru KAMBAYASHI, Michitaka SUZUKI, Atsushi FUJITA, Masataka FUKUCHI, Ryuji YOSHIDA, Hideki TOBINAGA, Norio KIMURA, Kenichiro MORITA, Koki SAKANO, Takuya SANO, Takuya MORINAGA, Takashi NAKANO