Patents by Inventor Hideaki Kadowaki

Hideaki Kadowaki 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: 11054789
    Abstract: An image forming apparatus includes an apparatus body and an exhaust unit. The exhaust unit includes a first duct and a separating member. The first duct includes a first duct A forming member and a first duct B forming member provided with a plurality of communication ports which form one side surface of a second sheet transport path through which a sheet after heating and fixing is transported, a first exhaust fan for discharging air of the first duct to an outside of the apparatus body, and a filter disposed on a downstream side from the second sheet transport path. The first duct separates the second sheet transport path from spaces other than the first duct in the apparatus body. Further, the separating member separates the second sheet transport path from spaces other than the first duct in the image forming apparatus.
    Type: Grant
    Filed: December 22, 2018
    Date of Patent: July 6, 2021
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Masafumi Sakamoto, Hideaki Kadowaki
  • Patent number: 10877435
    Abstract: An image forming apparatus includes an exhaust unit. The exhaust unit includes a first duct. The first duct includes a plurality of communication ports, and an exhaust fan for discharging air of the first duct to an outside. The plurality of communication ports are each formed such that distances to the exhaust fan are different from each other. Further, the first duct includes an inflow port which is formed on an upstream of flow of air from the communication port formed on the most upstream side of the flow of the air among the plurality of communication ports, and to which the auxiliary air is supplied from a first exhaust fan provided in the outside.
    Type: Grant
    Filed: December 23, 2018
    Date of Patent: December 29, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Masafumi Sakamoto, Hideaki Kadowaki
  • Publication number: 20200393788
    Abstract: An image forming apparatus comprises a housing including a resin frame. The resin frame is divided in a sheet feeding direction to include a conveyance frame, a process frame and a fixation frame. Moreover, the image forming apparatus comprises a driving unit and a drive frame. The driving unit is attachably and detachably provided in the drive frame, and applies a rotational driving force to rotating bodies. The drive frame is positioned with respect to the conveyance frame or the process frame, supports the rotating bodies, and has an attaching portion for the driving unit. Moreover, the drive frame is attached to one surface of the resin frame.
    Type: Application
    Filed: June 12, 2020
    Publication date: December 17, 2020
    Inventors: SHOHTAROH OKAMOTO, MASAFUMI SAKAMOTO, SHINICHI TAKEDA, NORIAKI TAGUCHI, HIDEAKI KADOWAKI
  • Patent number: 10866148
    Abstract: A detection device according to a first aspect includes a first arm, a second arm, and a detection unit having two states as output. The first arm and the second arm each have a corresponding pressure receiving portion pushed by one of detection targets and are respectively rotatable about rotation axes as rotation centers along the same straight line such that the first arm and the second arm have different positions when the corresponding pressure receiving portion is pushed and not pushed by one of the detection targets. The output of the detection unit is switched to one of the two states in accordance with the positions of the arms.
    Type: Grant
    Filed: January 24, 2019
    Date of Patent: December 15, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Hideaki Kadowaki, Masafumi Sakamoto
  • Patent number: 10775719
    Abstract: An image forming apparatus includes an apparatus body and an exhaust unit. The exhaust unit includes a first duct and a first exhaust fan provided in the first duct. The first exhaust fan suctions air inside the first duct and sends the suctioned air to an outside of the apparatus body. The first duct is disposed at a position adjacent to the fixing unit. The first duct is divided into a plurality of air flow paths.
    Type: Grant
    Filed: December 23, 2018
    Date of Patent: September 15, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Masafumi Sakamoto, Hideaki Kadowaki
  • Patent number: 10551787
    Abstract: A waste toner collecting device includes a waste toner container having an opening at an upper portion, and a shutter mechanism that opens or closes the opening. The shutter mechanism includes a receiving portion including an insertion port through which the waste toner discharging unit is inserted, the receiving portion having an inner space connected with an inner space of the waste toner container through the opening, a shutter member disposed in the receiving portion to be movable between an open position and a closing position, and an urging member that urges the shutter member to the closing position. The shutter member includes a ridge on an upper portion of an outer circumferential surface. The ridge has a protrusion height corresponding to a gap between the outer circumferential surface and an inner circumferential surface of the receiving portion.
    Type: Grant
    Filed: November 28, 2018
    Date of Patent: February 4, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Yuji Sawa, Shinichi Takeda, Noriaki Taguchi, Hiroki Kanemitsu, Hideaki Kadowaki
  • Publication number: 20190234812
    Abstract: A detection device according to a first aspect includes a first arm, a second arm, and a detection unit having two states as output. The first arm and the second arm each have a corresponding pressure receiving portion pushed by one of detection targets and are respectively rotatable about rotation axes as rotation centers along the same straight line such that the first arm and the second arm have different positions when the corresponding pressure receiving portion is pushed and not pushed by one of the detection targets. The output of the detection unit is switched to one of the two states in accordance with the positions of the arms.
    Type: Application
    Filed: January 24, 2019
    Publication date: August 1, 2019
    Inventors: HIDEAKI KADOWAKI, MASAFUMI SAKAMOTO
  • Publication number: 20190196369
    Abstract: An image forming apparatus includes an apparatus body and an exhaust unit. The exhaust unit includes a first duct and a first exhaust fan provided in the first duct. The first exhaust fan suctions air inside the first duct and sends the suctioned air to an outside of the apparatus body. The first duct is disposed at a position adjacent to the fixing unit. The first duct is divided into a plurality of air flow paths.
    Type: Application
    Filed: December 23, 2018
    Publication date: June 27, 2019
    Inventors: Masafumi Sakamoto, Hideaki Kadowaki
  • Publication number: 20190196397
    Abstract: An image forming apparatus includes an apparatus body and an exhaust unit. The exhaust unit includes a first duct and a separating member. The first duct includes a first duct A forming member and a first duct B forming member provided with a plurality of communication ports which form one side surface of a second sheet transport path through which a sheet after heating and fixing is transported, a first exhaust fan for discharging air of the first duct to an outside of the apparatus body, and a filter disposed on a downstream side from the second sheet transport path. The first duct separates the second sheet transport path from spaces other than the first duct in the apparatus body. Further, the separating member separates the second sheet transport path from spaces other than the first duct in the image forming apparatus.
    Type: Application
    Filed: December 22, 2018
    Publication date: June 27, 2019
    Inventors: MASAFUMI SAKAMOTO, HIDEAKI KADOWAKI
  • Publication number: 20190196398
    Abstract: An image forming apparatus includes an exhaust unit. The exhaust unit includes a first duct. The first duct includes a plurality of communication ports, and an exhaust fan for discharging air of the first duct to an outside. The plurality of communication ports are each formed such that distances to the exhaust fan are different from each other. Further, the first duct includes an inflow port which is formed on an upstream of flow of air from the communication port formed on the most upstream side of the flow of the air among the plurality of communication ports, and to which the auxiliary air is supplied from a first exhaust fan provided in the outside.
    Type: Application
    Filed: December 23, 2018
    Publication date: June 27, 2019
    Inventors: MASAFUMI SAKAMOTO, HIDEAKI KADOWAKI
  • Publication number: 20190171156
    Abstract: A waste toner collecting device includes a waste toner container having an opening at an upper portion, and a shutter mechanism that opens or closes the opening. The shutter mechanism includes a receiving portion including an insertion port through which the waste toner discharging unit is inserted, the receiving portion having an inner space connected with an inner space of the waste toner container through the opening, a shutter member disposed in the receiving portion to be movable between an open position and a closing position, and an urging member that urges the shutter member to the closing position. The shutter member includes a ridge on an upper portion of an outer circumferential surface. The ridge has a protrusion height corresponding to a gap between the outer circumferential surface and an inner circumferential surface of the receiving portion.
    Type: Application
    Filed: November 28, 2018
    Publication date: June 6, 2019
    Inventors: YUJI SAWA, SHINICHI TAKEDA, NORIAKI TAGUCHI, HIROKI KANEMITSU, HIDEAKI KADOWAKI
  • Patent number: 10139772
    Abstract: A waste toner detection mechanism includes a transmission member and a flag member. The transmission member transmits the rotation of a rotation transmission member to a stirring shaft. The transmission member can move between the farthest position and the closest position to the rotation transmission member in the axial direction of the stirring shaft and moves from the farthest position to the closest position with an increase in difference in rotation between the rotation transmission member and the stirring shaft. The transmission member has a locking portion elastically engaged with the rotation transmission member in the closest position and restricts movement of the transmission member to the farthest position. The flag member moves from a retracting position of being stored in the waste toner container to an exposing position of being exposed from the waste toner container with the transmission member moving from the farthest position to the closest position.
    Type: Grant
    Filed: October 12, 2017
    Date of Patent: November 27, 2018
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Hideaki Kadowaki
  • Patent number: 10108137
    Abstract: A collection container is divided by a divider plate into waste developer collection chambers in communication with waste developer reception ports for each color developer and a single waste toner collection chamber in communication with waste toner reception ports for each color toner. Further, the divider plate is a part of the inner wall of the collection container and the part is installed extending in the vertical direction to define a clearance between the divider plate and the bottom plate of the collection container. This makes it possible to collect color waste toner and color waste developer with a simple configuration.
    Type: Grant
    Filed: July 21, 2017
    Date of Patent: October 23, 2018
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Hideaki Kadowaki
  • Patent number: 10066681
    Abstract: A drive transmission mechanism which transmits a rotational driving force to a roller to be shifted in directions of a rotational axis thereof is equipped with a rotary drive transmission member which is driven to rotate in a predetermined rotational direction, a holder which holds the roller in such a manner that the roller can slide freely in the rotational axis directions while rotating about the rotational axis, and a one-way clutch interposed between the rotary drive transmission member and the holder. The one-way clutch is configured to transmit a rotational driving force from the rotary drive transmission member to the holder, and also to permit the holder to rotate in the predetermined rotational direction relative to the rotary drive transmission member.
    Type: Grant
    Filed: April 17, 2017
    Date of Patent: September 4, 2018
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Hideaki Kadowaki
  • Publication number: 20180039224
    Abstract: A waste toner detection mechanism includes a transmission member and a flag member. The transmission member transmits the rotation of a rotation transmission member to a stirring shaft. The transmission member can move between the farthest position and the closest position to the rotation transmission member in the axial direction of the stirring shaft and moves from the farthest position to the closest position with an increase in difference in rotation between the rotation transmission member and the stirring shaft. The transmission member has a locking portion elastically engaged with the rotation transmission member in the closest position and restricts movement of the transmission member to the farthest position. The flag member moves from a retracting position of being stored in the waste toner container to an exposing position of being exposed from the waste toner container with the transmission member moving from the farthest position to the closest position.
    Type: Application
    Filed: October 12, 2017
    Publication date: February 8, 2018
    Inventor: Hideaki KADOWAKI
  • Patent number: 9817359
    Abstract: A waste toner detection mechanism includes a transmission member and a flag member. The transmission member transmits the rotation of a rotation transmission member to a stirring shaft. The transmission member can move between the farthest position and the closest position to the rotation transmission member in the axial direction of the stirring shaft and moves from the farthest position to the closest position with an increase in difference in rotation between the rotation transmission member and the stirring shaft. The transmission member has a locking portion elastically engaged with the rotation transmission member in the closest position and restricts movement of the transmission member to the farthest position. The flag member moves from a retracting position of being stored in the waste toner container to an exposing position of being exposed from the waste toner container with the transmission member moving from the farthest position to the closest position.
    Type: Grant
    Filed: October 5, 2016
    Date of Patent: November 14, 2017
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Hideaki Kadowaki
  • Publication number: 20170322510
    Abstract: A collection container is divided by a divider plate into waste developer collection chambers in communication with waste developer reception ports for each color developer and a single waste toner collection chamber in communication with waste toner reception ports for each color toner. Further, the divider plate is a part of the inner wall of the collection container and the part is installed extending in the vertical direction to define a clearance between the divider plate and the bottom plate of the collection container. This makes it possible to collect color waste toner and color waste developer with a simple configuration.
    Type: Application
    Filed: July 21, 2017
    Publication date: November 9, 2017
    Inventor: Hideaki KADOWAKI
  • Publication number: 20170298999
    Abstract: A drive transmission mechanism which transmits a rotational driving force to a roller to be shifted in directions of a rotational axis thereof is equipped with a rotary drive transmission member which is driven to rotate in a predetermined rotational direction, a holder which holds the roller in such a manner that the roller can slide freely in the rotational axis directions while rotating about the rotational axis, and a one-way clutch interposed between the rotary drive transmission member and the holder. The one-way clutch is configured to transmit a rotational driving force from the rotary drive transmission member to the holder, and also to permit the holder to rotate in the predetermined rotational direction relative to the rotary drive transmission member.
    Type: Application
    Filed: April 17, 2017
    Publication date: October 19, 2017
    Inventor: Hideaki KADOWAKI
  • Patent number: 9746819
    Abstract: A collection container is divided by a divider plate into waste developer collection chambers in communication with waste developer reception ports for each color developer and a single waste toner collection chamber in communication with waste toner reception ports for each color toner. Further, the divider plate is a part of the inner wall of the collection container and the part is installed extending in the vertical direction to define a clearance between the divider plate and the bottom plate of the collection container. This makes it possible to collect color waste toner and color waste developer with a simple configuration.
    Type: Grant
    Filed: May 18, 2016
    Date of Patent: August 29, 2017
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Hideaki Kadowaki
  • Patent number: 9727020
    Abstract: In a developer conveyance device, a spiral screw is arranged inside a spiral coil such that the spiral coil and the spiral screw are both rotated. Accompanied by rotation of the spiral coil, even if waste toner tries to pass through the spiral coil and move in a vertical direction, movement of the waste toner in the vertical direction is blocked by the spiral screw, such that the waste toner is conveyed by the spiral screw. Since the waste toner hardly passes through the spiral coil in the vertical direction, the waste toner is also conveyed by the spiral coil.
    Type: Grant
    Filed: March 9, 2015
    Date of Patent: August 8, 2017
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Hideaki Kadowaki