Patents by Inventor Fumiyuki HEISHI

Fumiyuki HEISHI 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: 10392209
    Abstract: A sheet feeding sub tray is detachably attachable to a sheet loading stand of a sheet conveying device that includes a setting reference part on one end side of the sheet loading stand in a sheet width direction. The sheet feeding sub tray includes a small-size setting reference part disposed at a position closer to a center of the sheet loading stand in the sheet width direction than the setting reference part in a state in which the sheet feeding sub tray is installed to the sheet loading stand.
    Type: Grant
    Filed: March 12, 2018
    Date of Patent: August 27, 2019
    Assignee: Ricoh Company, Ltd.
    Inventors: Fumiyuki Heishi, Joji Akiyama
  • Publication number: 20180265313
    Abstract: A sheet feeding sub tray is detachably attachable to a sheet loading stand of a sheet conveying device that includes a setting reference part on one end side of the sheet loading stand in a sheet width direction. The sheet feeding sub tray includes a small-size setting reference part disposed at a position closer to a center of the sheet loading stand in the sheet width direction than the setting reference part in a state in which the sheet feeding sub tray is installed to the sheet loading stand.
    Type: Application
    Filed: March 12, 2018
    Publication date: September 20, 2018
    Applicant: Ricoh Company, Ltd.
    Inventors: Fumiyuki Heishi, Joji Akiyama
  • Publication number: 20160170355
    Abstract: An automatic document feeder comprises: a first conveyance portion through which documents from a bundle of documents placed on a paper feeding tray are separated from one another and conveyed to a reading position; a second conveyance portion through which a document having been conveyed to the reading position is ejected onto a paper ejection tray; a detector that detects any one mode from a productivity mode and a silent mode; and a controller that controls, when the detector has detected the productivity mode, the first conveyance portion so as to bring a conveyance speed in the first conveyance portion to a first conveyance speed, and, when the detector has detected the silent mode, controls the first conveyance portion so as to bring a conveyance speed in the first conveyance portion to a second conveyance speed that is slower than the first conveyance speed.
    Type: Application
    Filed: November 23, 2015
    Publication date: June 16, 2016
    Applicant: Ricoh Company, Limited
    Inventors: Fumiyuki HEISHI, Takeshi AKAI, Atsushi KANAYA, Yoshito SUZUKI, Hiroshi KUBO, Shinya KITAOKA, Norio KIMURA
  • Patent number: 9238559
    Abstract: An auto document feeder includes a movable document table on which documents are stacked, a pickup roller that feeds a topmost document among the documents on the movable document table to a feed position via a feed opening, and a shielding member that is arranged on the upstream side of the pickup roller and above the topmost document, and that shields the feed opening. At least an end portion of the shielding member on the document table side is made of a flexible member.
    Type: Grant
    Filed: February 21, 2014
    Date of Patent: January 19, 2016
    Assignee: Ricoh Company, Limited
    Inventors: Takeshi Akai, Shinya Kitaoka, Koki Sakano, Fumiyuki Heishi
  • Patent number: 9075376
    Abstract: According to an embodiment, an ADF includes: a sheet-feed cover unit; a switch unit to be switched on or off depending on whether the sheet-feed cover unit is open or closed and including a first terminal, to which a first voltage, by which a driving motor is driven, is input, and a second terminal connected to the driving motor; and an open/close-detection circuit unit that includes a first switch circuit and a second switch circuit. The first switch circuit is switched on or off based on a threshold voltage that is larger than a second voltage to be generated in the driving motor by a jammed-document removing motion and smaller than the first voltage. The open/close-detection circuit unit detects that the sheet-feed cover unit is closed when the second switch circuit is energized, but detects that the sheet-feed cover unit is open when the second switch circuit is de-energized.
    Type: Grant
    Filed: May 17, 2013
    Date of Patent: July 7, 2015
    Assignee: Ricoh Company, Limited
    Inventors: Hiroaki Utagawa, Hiroshi Kubo, Shinya Kitaoka, Takehisa Shimazu, Takeshi Akai, Fumiyuki Heishi, Norio Kimura, Yoshito Suzuki, Jun Yamada
  • Patent number: 9013763
    Abstract: An image reading apparatus includes: a transmitting glass; and a step member that is located upstream of a reading position, at which an image of a conveyed document is read by a reading unit via a transmitting glass, in a conveying direction of the document, and has a document guiding surface at a position away from a surface of a transmitting glass by a prescribed distance and forms a step between the document guiding surface and the transmitting glass. The step member is provided with a protrusion protruding downstream in the conveying direction of the document to form space between the transmitting glass and a downstream part of the step member in the conveying direction of the document.
    Type: Grant
    Filed: December 19, 2013
    Date of Patent: April 21, 2015
    Assignee: Ricoh Company, Limited
    Inventors: Hiroshi Kubo, Hidehiko Fujiwara, Atsushi Kanaya, Shinya Kitaoka, Takeshi Akai, Fumiyuki Heishi, Takehisa Shimazu, Koki Sakano, Takuya Sano
  • Patent number: 8950743
    Abstract: According to an embodiment, an ADF that feeds and conveys original document sheets one sheet by one sheet from a tray unit to a read position on a document glass by motive power from a driving motor includes: an opening/closing unit operable to open and close relative to the document glass; an open/close detection sensor that detects an open/closed state of the opening/closing unit; a first interlock switch, which is arranged between a power source and the driving motor, that is on when the opening/closing unit is closed, and vice versa; and a control circuit that determines the open/closed state of the opening/closing unit based on detection outputs of the first interlock switch and the open/close detection sensor. The control circuit determines that the opening/closing unit is in the closed state when the first interlock switch is on and the open/close detection sensor is detecting the closed state.
    Type: Grant
    Filed: November 1, 2013
    Date of Patent: February 10, 2015
    Assignee: Ricoh Company, Limited
    Inventors: Koki Sakano, Hiroshi Kubo, Shinya Kitaoka, Takeshi Akai, Hidehiko Fujiwara, Atsushi Kanaya, Fumiyuki Heishi, Takuya Sano
  • Patent number: 8925913
    Abstract: A sheet conveying device such as a feed mechanism includes a pick-up roller and a cover member. The pick-up roller feeds, into an apparatus, a sheet such as a document on a placing table such as a document placing table on which the sheet is placed. The cover member such as a pick-up cover covers the pick-up roller. The cover member is supported at both ends thereof on a shaft of the pick-up roller or on shaft bearings that receive the shaft of the pick-up roller.
    Type: Grant
    Filed: May 30, 2013
    Date of Patent: January 6, 2015
    Assignee: Ricoh Company, Limited
    Inventors: Hiroshi Kubo, Shinya Kitaoka, Takehisa Shimazu, Takeshi Akai, Takuma Ariga, Fumiyuki Heishi, Michitaka Suzuki, Yoshito Suzuki, Norio Kimura, Hiroaki Utagawa, Kenji Hayasaka, Jun Yamada, Kenichiro Morita, Ikuhisa Okamoto, Satoshi Saito
  • Patent number: 8896891
    Abstract: A document conveying device includes a document table on which a stack of document sheets is placed; a rotating shaft member detachably provided on a main body of the document conveying device; a feeding member configured to contact and feed a topmost sheet of the stack of document sheets, the feeding member being attached to the rotating shaft member via a driving force transmitting member; a separating unit configured to separate the topmost sheet from one or more sheets that are fed together with the topmost sheet, rotating members rotatably attached to the rotating shaft member; a holding member configured to hold the feeding member and the driving force transmitting member; and a rotating member position restricting unit configured to restrict a position of the rotating members other than the holding member to a given predetermined position with reference to a position of the holding member.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: November 25, 2014
    Assignee: Ricoh Company, Limited
    Inventors: Fumiyuki Heishi, Hiroshi Kubo, Takashi Fujii, Shinya Kitaoka, Takeshi Akai, Takehisa Shimazu, Takuma Ariga, Michitaka Suzuki, Yoshito Suzuki, Jun Yamada, Satoshi Saito, Kenichiro Morita, Ikuhisa Okamoto, Kenji Hayasaka, Hiroaki Utagawa
  • Publication number: 20140239573
    Abstract: An auto document feeder includes a movable document table on which documents are stacked, a pickup roller that feeds a topmost document among the documents on the movable document table to a feed position via a feed opening, and a shielding member that is arranged on the upstream side of the pickup roller and above the topmost document, and that shields the feed opening. At least an end portion of the shielding member on the document table side is made of a flexible member.
    Type: Application
    Filed: February 21, 2014
    Publication date: August 28, 2014
    Applicant: RICOH COMPANY, LIMITED
    Inventors: Takeshi AKAI, Shinya KITAOKA, Koki SAKANO, Fumiyuki HEISHI
  • Publication number: 20140177012
    Abstract: An image reading apparatus includes: a transmitting glass; and a step member that is located upstream of a reading position, at which an image of a conveyed document is read by a reading unit via a transmitting glass, in a conveying direction of the document, and has a document guiding surface at a position away from a surface of a transmitting glass by a prescribed distance and forms a step between the document guiding surface and the transmitting glass. The step member is provided with a protrusion protruding downstream in the conveying direction of the document to form space between the transmitting glass and a downstream part of the step member in the conveying direction of the document.
    Type: Application
    Filed: December 19, 2013
    Publication date: June 26, 2014
    Applicant: RICOH COMPANY, LIMITED
    Inventors: Hiroshi KUBO, Hidehiko FUJIWARA, Atsushi KANAYA, Shinya KITAOKA, Takeshi AKAI, Fumiyuki HEISHI, Takehisa SHIMAZU, Koki SAKANO, Takuya SANO
  • Patent number: 8743431
    Abstract: A sheet conveying device includes: a sheet housing unit that houses a sheet; a sheet conveying unit that conveys the sheet; a sheet detection unit that detects presence or absence of the sheet in the sheet housing unit; a sheet nipping unit that nips the sheet housed in the sheet housing unit; and a control unit. The control unit controls the sheet nipping unit to reach a nipping state to nip the sheet in the sheet housing unit upon the sheet detection unit detecting a sheet-present state, executes a power saving mode to stop supplying power to at least a part of the electric mechanisms when no drive command is input for a predetermined time, and controls the sheet nipping unit to cancel the nipping state before execution of the power saving mode.
    Type: Grant
    Filed: February 15, 2013
    Date of Patent: June 3, 2014
    Assignee: Ricoh Company, Limited
    Inventors: Kenji Hayasaka, Hiroshi Kubo, Shinya Kitaoka, Takehisa Shimazu, Takeshi Akai, Takuma Ariga, Fumiyuki Heishi, Yoshito Suzuki, Akihito Kameda, Hiroaki Utagawa, Jun Yamada, Takashi Fujii, Motoya Sano, Satoshi Saito, Ikuhisa Okamoto, Kenichiro Morita
  • Publication number: 20140140744
    Abstract: An automatic document feeder includes a document stack unit; a conveying unit configured to separate a document from the documents stacked on the document stack unit and convey the document to a scanning position through a conveying path; document detecting units configured to detect the document; an upstream document detecting unit configured to detect the document, the upstream document detecting unit being arranged in the conveying path at an uppermost stream in a document conveying direction with respect to the document detecting units; and a determining unit configured to determine a passage of a trailing end of the document at positions of the document detecting units and the upstream document detecting unit and determine a presence of a hole on the document, based on the detection results. A detection range of the upstream document detecting unit is set to be wider than detection ranges of the document detecting units.
    Type: Application
    Filed: November 15, 2013
    Publication date: May 22, 2014
    Applicant: Ricoh Company, Limited
    Inventors: Takeshi AKAI, Takashi FUJII, Satoshi SAITO, Hiroshi KUBO, Ikuhisa OKAMOTO, Shinya KITAOKA, Takehisa SHIMAZU, Kenichiro MORITA, Yoshito SUZUKI, Takuma ARIGA, Jun YAMADA, Kenji HAYASAKA, Akihito KAMEDA, Hiroaki UTAGAWA, Fumiyuki HEISHI
  • Publication number: 20140125007
    Abstract: According to an embodiment, an ADF that feeds and conveys original document sheets one sheet by one sheet from a tray unit to a read position on a document glass by motive power from a driving motor includes: an opening/closing unit operable to open and close relative to the document glass; an open/close detection sensor that detects an open/closed state of the opening/closing unit; a first interlock switch, which is arranged between a power source and the driving motor, that is on when the opening/closing unit is closed, and vice versa; and a control circuit that determines the open/closed state of the opening/closing unit based on detection outputs of the first interlock switch and the open/close detection sensor. The control circuit determines that the opening/closing unit is in the closed state when the first interlock switch is on and the open/close detection sensor is detecting the closed state.
    Type: Application
    Filed: November 1, 2013
    Publication date: May 8, 2014
    Applicant: RICOH COMPANY, LIMITED
    Inventors: Koki SAKANO, Hiroshi KUBO, Shinya KITAOKA, Takeshi AKAI, Hidehiko FUJIWARA, Atsushi KANAYA, Fumiyuki HEISHI, Takuya SANO
  • Publication number: 20130320611
    Abstract: A sheet conveying device such as a feed mechanism includes a pick-up roller and a cover member. The pick-up roller feeds, into an apparatus, a sheet such as a document on a placing table such as a document placing table on which the sheet is placed. The cover member such as a pick-up cover covers the pick-up roller. The cover member is supported at both ends thereof on a shaft of the pick-up roller or on shaft bearings that receive the shaft of the pick-up roller.
    Type: Application
    Filed: May 30, 2013
    Publication date: December 5, 2013
    Applicant: RICOH COMPANY, LTD
    Inventors: Hiroshi KUBO, Shinya KITAOKA, Takehisa SHIMAZU, Takeshi AKAI, Takuma ARIGA, Fumiyuki HEISHI, Michitaka SUZUKI, Yoshito SUZUKI, Norio KIMURA, Hiroaki UTAGAWA, Kenji HAYASAKA, Jun YAMADA, Kenichiro MORITA, Ikuhisa OKAMOTO, Satoshi SAITO
  • Publication number: 20130315610
    Abstract: According to an embodiment, an ADF includes: a sheet-feed cover unit; a switch unit to be switched on or off depending on whether the sheet-feed cover unit is open or closed and including a first terminal, to which a first voltage, by which a driving motor is driven, is input, and a second terminal connected to the driving motor; and an open/close-detection circuit unit that includes a first switch circuit and a second switch circuit. The first switch circuit is switched on or off based on a threshold voltage that is larger than a second voltage to be generated in the driving motor by a jammed-document removing motion and smaller than the first voltage. The open/close-detection circuit unit detects that the sheet-feed cover unit is closed when the second switch circuit is energized, but detects that the sheet-feed cover unit is open when the second switch circuit is de-energized.
    Type: Application
    Filed: May 17, 2013
    Publication date: November 28, 2013
    Applicant: RICOH COMPANY, LIMITED
    Inventors: Hiroaki UTAGAWA, Hiroshi KUBO, Shinya KITAOKA, Takehisa SHIMAZU, Takeshi AKAI, Fumiyuki HEISHI, Norio KIMURA, Yoshito SUZUKI, Jun YAMADA
  • Publication number: 20130242359
    Abstract: A document conveying device includes a document table on which a stack of document sheets is placed; a rotating shaft member detachably provided on a main body of the document conveying device; a feeding member configured to contact and feed a topmost sheet of the stack of document sheets, the feeding member being attached to the rotating shaft member via a driving force transmitting member; a separating unit configured to separate the topmost sheet from one or more sheets that are fed together with the topmost sheet, rotating members rotatably attached to the rotating shaft member; a holding member configured to hold the feeding member and the driving force transmitting member; and a rotating member position restricting unit configured to restrict a position of the rotating members other than the holding member to a given predetermined position with reference to a position of the holding member.
    Type: Application
    Filed: March 14, 2013
    Publication date: September 19, 2013
    Applicant: RICOH COMPANY, LIMITED
    Inventors: Fumiyuki HEISHI, Hiroshi KUBO, Takashi FUJII, Shinya KITAOKA, Takeshi AKAI, Takehisa SHIMAZU, Takuma ARIGA, Michitaka SUZUKI, Yoshito SUZUKI, Jun YAMADA, Satoshi SAITO, Kenichiro MORITA, Ikuhisa OKAMOTO, Kenji HAYASAKA, Hiroaki UTAGAWA
  • Publication number: 20130215481
    Abstract: A sheet conveying device includes: a sheet housing unit that houses a sheet; a sheet conveying unit that conveys the sheet; a sheet detection unit that detects presence or absence of the sheet in the sheet housing unit; a sheet nipping unit that nips the sheet housed in the sheet housing unit; and a control unit. The control unit controls the sheet nipping unit to reach a nipping state to nip the sheet in the sheet housing unit upon the sheet detection unit detecting a sheet-present state, executes a power saving mode to stop supplying power to at least a part of the electric mechanisms when no drive command is input for a predetermined time, and controls the sheet nipping unit to cancel the nipping state before execution of the power saving mode.
    Type: Application
    Filed: February 15, 2013
    Publication date: August 22, 2013
    Inventors: Kenji HAYASAKA, Hiroshi KUBO, Shinya KITAOKA, Takehisa SHIMAZU, Takeshi AKAI, Takuma ARIGA, Fumiyuki HEISHI, Yoshito SUZUKI, Akihito KAMEDA, Hiroaki UTAGAWA, Jun YAMADA, Takashi FUJII, Motoya SANO, Satoshi SAITO, Ikuhisa OKAMOTO, Kenichiro MORITA