Patents by Inventor Junichi Ushikubo
Junichi Ushikubo 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).
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Patent number: 11853001Abstract: A development device may include: a development device body; a developer cartridge detachably attached to the development device body; first and second levers provided to the development device body, the first lever including an operation part and a first engagement portion and the second lever including a second engagement portion; first and second engaged portions provided to the developer cartridge, the first engaged portion being configured to form a first engagement with the first engagement portion and the second engaged portion being configured to form a second engagement with the second engagement portion; and a first biasing member biasing the first engagement portion to the first engaged portion. When the operation part is operated with a first pressing force, the first engagement is released, and when the operation part is operated with a second pressing force greater than the first pressing force, the first and second engagements are released.Type: GrantFiled: November 10, 2022Date of Patent: December 26, 2023Assignee: Oki Electric Industry Co., Ltd.Inventors: Junichi Ushikubo, Yuuki Kobayashi
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Publication number: 20230176520Abstract: A development device may include: a development device body; a developer cartridge detachably attached to the development device body; first and second lavers provided to the development device body, the first lever including an operation part and a first engagement portion and a second lever including a second engagement portion; first and second engaged portions provided to the developer cartridge, the first engaged portion being configured to form a first engagement with the first engagement portion and the second engaged portion being configured to form a second engagement with the second engagement portion; and a first biasing member biasing the first engagement portion to the first engaged portion. When the operation part is operated with a first pressing force, the first engagement is released, and when the operation part is operated with a second pressing force greater than the first pressing force, the first and second engagements are released.Type: ApplicationFiled: November 10, 2022Publication date: June 8, 2023Applicant: Oki Electric Industry Co., Ltd.Inventors: Junichi USHIKUBO, Yuuki KOBAYASHI
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Patent number: 11112746Abstract: An image forming apparatus includes: a main body to which a detachable part is attachable, the main body having an opening; a cover that opens and closes the opening of the main body; and an insertion member that, when the detachable part is not attached to the main body, is in an inserted position where the insertion member is inserted between the main body and the cover and prevents closing of the cover, and when the detachable part is attached to the main body, is in a retreat position where the insertion member is not inserted between the main body and the cover and allows closing of the cover.Type: GrantFiled: July 17, 2020Date of Patent: September 7, 2021Assignee: Oki Electric Industry Co., Ltd.Inventor: Junichi Ushikubo
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Publication number: 20210026289Abstract: An image forming apparatus includes: a main body to which a detachable part is attachable, the main body having an opening; a cover that opens and closes the opening of the main body; and an insertion member that, when the detachable part is not attached to the main body, is in an inserted position where the insertion member is inserted between the main body and the cover and prevents closing of the cover, and when the detachable part is attached to the main body, is in a retreat position where the insertion member is not inserted between the main body and the cover and allows closing of the cover.Type: ApplicationFiled: July 17, 2020Publication date: January 28, 2021Applicant: Oki Data CorporationInventor: Junichi USHIKUBO
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Patent number: 10670988Abstract: A developer container includes: a body in which a plurality of developer chambers that store developer are arranged, each developer chamber having an opening; and a plurality of covers that seal the openings of the plurality of developer chambers, the plurality of covers being separately provided to correspond to the openings of the plurality of developer chambers.Type: GrantFiled: February 27, 2019Date of Patent: June 2, 2020Assignee: Oki Data CorporationInventors: Masashi Fujii, Junichi Ushikubo
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Publication number: 20190294078Abstract: A developer container includes: a body in which a plurality of developer chambers that store developer are arranged, each developer chamber having an opening; and a plurality of covers that seal the openings of the plurality of developer chambers, the plurality of covers being separately provided to correspond to the openings of the plurality of developer chambers.Type: ApplicationFiled: February 27, 2019Publication date: September 26, 2019Inventors: Masashi FUJII, Junichi USHIKUBO
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Patent number: 10386750Abstract: An image forming unit attachable and detachable with respect to an image forming apparatus includes a developer container in which a plurality of developer containing parts for containing respective developers are arranged on an arrangement line; and a detachable part that detachably supports the developer container wherein the developer container is mounted to the detachable part by sliding in mounting or detaching directions, wherein the detachable part has an engaging member that is rotatably supported, a downstream end part that is positioned at a downstream side of the developer container in the mounting direction.Type: GrantFiled: October 19, 2018Date of Patent: August 20, 2019Assignee: Oki Data CorporationInventor: Junichi Ushikubo
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Publication number: 20190129331Abstract: An image forming unit attachable and detachable with respect to an image forming apparatus includes a developer container in which a plurality of developer containing parts for containing respective developers are arranged on an arrangement line; and a detachable part that detachably supports the developer container wherein the developer container is mounted to the detachable part by sliding in mounting or detaching directions, wherein the detachable part has an engaging member that is rotatably supported, a downstream end part that is positioned at a downstream side of the developer container in the mounting direction.Type: ApplicationFiled: October 19, 2018Publication date: May 2, 2019Inventor: Junichi USHIKUBO
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Patent number: 10168638Abstract: A developer container holder for holding a developer container including a developer supply port and a shutter for opening and closing the developer supply port guides the developer container in a first direction when the developer container is attached to the developer container holder and in a second direction when the developer container is removed from the developer container holder, and includes: a holder that holds the developer container; a support that supports the holder slidably within a region in a direction in which the developer container is attached to and removed from the developer container holder; and an elastic member placed between the holder and the support to urge the holder in the first direction when the holder is on a first side of a position in the region and in the second direction when the holder is on a second side of the position in the region.Type: GrantFiled: October 18, 2017Date of Patent: January 1, 2019Assignee: Oki Data CorporationInventor: Junichi Ushikubo
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Patent number: 10061262Abstract: An image forming unit has a configuration in which, when an opening-closing member causes respective first openings to be opened by the engagement of the opening-closing member and an engaging section in association with an operation of attaching a developer container to an attachment unit, a first surface and a second surface are separated away from each other until arrival of the first openings at positions corresponding to respective second openings, and the first surface and the second surface are brought into proximity to each other upon the arrival of the first openings at the positions corresponding to the respective second openings.Type: GrantFiled: April 19, 2017Date of Patent: August 28, 2018Assignee: OKI DATA CORPORATIONInventor: Junichi Ushikubo
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Publication number: 20180113416Abstract: A developer container holder for holding a developer container including a developer supply port and a shutter for opening and closing the developer supply port guides the developer container in a first direction when the developer container is attached to the developer container holder and in a second direction when the developer container is removed from the developer container holder, and includes: a holder that holds the developer container; a support that supports the holder slidably within a region in a direction in which the developer container is attached to and removed from the developer container holder; and an elastic member placed between the holder and the support to urge the holder in the first direction when the holder is on a first side of a position in the region and in the second direction when the holder is on a second side of the position in the region.Type: ApplicationFiled: October 18, 2017Publication date: April 26, 2018Inventor: Junichi USHIKUBO
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Publication number: 20170329277Abstract: An image forming unit has a configuration in which, when an opening-closing member causes respective first openings to be opened by the engagement of the opening-closing member and an engaging section in association with an operation of attaching a developer container to an attachment unit, a first surface and a second surface are separated away from each other until arrival of the first openings at positions corresponding to respective second openings, and the first surface and the second surface are brought into proximity to each other upon the arrival of the first openings at the positions corresponding to the respective second openings.Type: ApplicationFiled: April 19, 2017Publication date: November 16, 2017Applicant: Oki Data CorporationInventor: Junichi USHIKUBO
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Patent number: 9188938Abstract: A developer collection container includes: a container body capable of containing collected developer; a developer conveyance member extending into the developer collection container and configured to convey the developer into the container body; and a guide provided in the container body and supporting the developer conveyance member from below the developer conveyance member.Type: GrantFiled: November 22, 2011Date of Patent: November 17, 2015Assignee: Oki Data CorporationInventor: Junichi Ushikubo
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Patent number: 9069320Abstract: A cleaning device for an image forming apparatus includes a cleaning member that removes residual developer that remains on a image carrier, a rotary conveying member that conveys the removed residual developer toward a predetermined direction, and a housing that contains the rotary conveying member. The housing includes a support member that supports the cleaning member; and a protective member that has an inner wall which opposes outer periphery of the rotary conveying member and partially covers the rotary conveying member. The protective member is made of a resin molding material to which a filler is not added.Type: GrantFiled: November 12, 2013Date of Patent: June 30, 2015Assignee: Oki Data CorporationInventor: Junichi Ushikubo
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Patent number: D892921Type: GrantFiled: September 18, 2018Date of Patent: August 11, 2020Assignee: OKI DATA CORPORATIONInventors: Junichi Ushikubo, Tatsuhiko Shimomura, Masashi Fujii, Shun Hatanaka
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Patent number: D898114Type: GrantFiled: September 27, 2018Date of Patent: October 6, 2020Assignee: OKI DATA CORPORATIONInventors: Junichi Ushikubo, Tatsuhiko Shimomura, Masashi Fujii, Shun Hatanaka
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Patent number: D898820Type: GrantFiled: September 25, 2018Date of Patent: October 13, 2020Assignee: OKI DATA CORPORATIONInventors: Junichi Ushikubo, Tatsuhiko Shimomura, Masashi Fujii, Shun Hatanaka
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Patent number: D910742Type: GrantFiled: September 21, 2018Date of Patent: February 16, 2021Assignee: OKI DATA CORPORATIONInventors: Masashi Fujii, Tatsuhiko Shimomura, Junichi Ushikubo, Shun Hatanaka
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Patent number: D910743Type: GrantFiled: September 28, 2018Date of Patent: February 16, 2021Assignee: OKI DATA CORPORATIONInventors: Masashi Fujii, Tatsuhiko Shimomura, Junichi Ushikubo, Shun Hatanaka
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Patent number: D916958Type: GrantFiled: September 28, 2018Date of Patent: April 20, 2021Assignee: OKI DATA CORPORATIONInventors: Masashi Fujii, Tatsuhiko Shimomura, Junichi Ushikubo, Shun Hatanaka