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公开(公告)号：US10139772B2
公开(公告)日：2018-11-27
申请号：US15730839
申请日：2017-10-12
Applicant: Sharp Kabushiki Kaisha
Inventor： Hideaki Kadowaki
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.
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公开(公告)号：US11868080B2
公开(公告)日：2024-01-09
申请号：US17960732
申请日：2022-10-05
Applicant: SHARP KABUSHIKI KAISHA
Inventor： Hideaki Kadowaki
CPC classification number: G03G21/1633 , G03G2215/0078 , G03G2221/1687
Abstract: According to an embodiment, an open and close detection device is provided with a moving member, a first lever, a second lever, and the like. The moving member is held to be movable by a holding member within a planar area including an initial position and a detection position. Each of the first lever and the second lever includes a contact guide section, and moves the moving member in association with a closing operation of an open and close member. Also, when one of the first lever and the second lever is to move the moving member, this movement is guided by the contact guide section of the other lever.
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公开(公告)号：US10775719B2
公开(公告)日：2020-09-15
申请号：US16231563
申请日：2018-12-23
Applicant: SHARP KABUSHIKI KAISHA
Inventor： Masafumi Sakamoto , Hideaki Kadowaki
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.
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公开(公告)号：US20190196369A1
公开(公告)日：2019-06-27
申请号：US16231563
申请日：2018-12-23
Applicant: SHARP KABUSHIKI KAISHA
Inventor： Masafumi Sakamoto , Hideaki Kadowaki
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.
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公开(公告)号：US10066681B2
公开(公告)日：2018-09-04
申请号：US15488587
申请日：2017-04-17
Applicant: Sharp Kabushiki Kaisha
Inventor： Hideaki Kadowaki
IPC: F16D41/066 , B65H29/20
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.
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Patent Agency Ranking
公开(公告)号：US09746819B2
公开(公告)日：2017-08-29
申请号：US15157769
申请日：2016-05-18
Applicant: Sharp Kabushiki Kaisha
Inventor： Hideaki Kadowaki
IPC: G03G21/12
CPC classification number: G03G21/12 , G03G2215/0132
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.
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7.发明授权公开(公告)号：US11209770B2
公开(公告)日：2021-12-28
申请号：US16900445
申请日：2020-06-12
Applicant: SHARP KABUSHIKI KAISHA
Inventor： Shohtaroh Okamoto , Masafumi Sakamoto , Shinichi Takeda , Noriaki Taguchi , Hideaki Kadowaki
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.
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公开(公告)号：US11054789B2
公开(公告)日：2021-07-06
申请号：US16231408
申请日：2018-12-22
Applicant: SHARP KABUSHIKI KAISHA
Inventor： Masafumi Sakamoto , Hideaki Kadowaki
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.
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公开(公告)号：US10108137B2
公开(公告)日：2018-10-23
申请号：US15656239
申请日：2017-07-21
Applicant: Sharp Kabushiki Kaisha
Inventor： Hideaki Kadowaki
IPC: G03G21/12
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.
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公开(公告)号：US12181816B2
公开(公告)日：2024-12-31
申请号：US18221594
申请日：2023-07-13
Applicant: SHARP KABUSHIKI KAISHA
Inventor： Hideaki Kurimoto , Hideaki Kadowaki
Abstract: A transport roller pair including: a first-side roller provided with a plurality of roller portions spaced apart in a rotation axial line direction; a fixing device; and an image forming device is provided. The first-side roller includes roller portions. The transport roller pair further includes a second-side roller including a plurality of contact areas and a plurality of non-contact areas as areas other than the plurality of contact areas. At least the contact areas are covered with a release layer, and an outer diameter of each of the plurality of non-contact areas is smaller than an outer diameter of each of the plurality of contact areas. The second-side roller includes a shaft member integrally formed to have a stepped shape.
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