Patents by Inventor Shun HATANAKA
Shun HATANAKA 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: 10606208Abstract: A developer container according to an embodiment includes: a container having a space that contains a developer; an optical system includes a first optical member including first end face exposed to a containing space in the container and a second optical member including a second end face exposed to the containing space and being opposed to the first end face in a first direction, and on which the light is incident through the second end face; a shaft provided in the containing space to be rotatable about the first direction; a cleaning member provided to the shaft to be movable in the first direction to clean the first and second end faces by passing through a gap with a rotation of the shaft; and a guide member provided upstream of the optical system and that comes into contact with the cleaning member to guide the cleaning member to a gap.Type: GrantFiled: September 18, 2018Date of Patent: March 31, 2020Assignee: Oki Data CorporationInventors: Hisatoshi Saito, Tetsu Koyama, Masashi Fujii, Shun Hatanaka
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Patent number: 10295934Abstract: A toner container includes containing chambers, a shaft member, rotary members, and stirring members. The containing chambers are arrayed in a first direction and partitioned from each other. The containing chambers contain respective toners of different colors. The shaft member extends in the first direction, passes through the containing chambers, and is rotatable about a rotational axis extending in the first direction. The rotary members are disposed in the respective containing chambers and each have a through-hole extending in the first direction. The rotary members are rotatable in response to rotation of the shaft member in an inserted state of the shaft member in the through-holes. The stirring members are supported by the respective rotary members and each extend in a second direction intersecting the first direction. The stirring members are pivotable in response to rotation of the respective rotary members. The stirring members have different pivoting positions upon pivoting.Type: GrantFiled: July 27, 2018Date of Patent: May 21, 2019Assignee: OKI DATA CORPORATIONInventor: Shun Hatanaka
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Publication number: 20190094786Abstract: A developer container according to an embodiment includes: a container having a space that contains a developer; an optical system includes a first optical member including first end face exposed to a containing space in the container and a second optical member including a second end face exposed to the containing space and being opposed to the first end face in a first direction, and on which the light is incident through the second end face; a shaft provided in the containing space to be rotatable about the first direction; a cleaning member provided to the shaft to be movable in the first direction to clean the first and second end faces by passing through a gap with a rotation of the shaft; and a guide member provided upstream of the optical system and that comes into contact with the cleaning member to guide the cleaning member to a gap.Type: ApplicationFiled: September 18, 2018Publication date: March 28, 2019Applicant: Oki Data CorporationInventors: Hisatoshi SAITO, Tetsu KOYAMA, Masashi FUJII, Shun HATANAKA
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Publication number: 20190064702Abstract: A toner container includes containing chambers, a shaft member, rotary members, and stirring members. The containing chambers are arrayed in a first direction and partitioned from each other. The containing chambers contain respective toners of different colors. The shaft member extends in the first direction, passes through the containing chambers, and is rotatable about a rotational axis extending in the first direction. The rotary members are disposed in the respective containing chambers and each have a through-hole extending in the first direction. The rotary members are rotatable in response to rotation of the shaft member in an inserted state of the shaft member in the through-holes. The stirring members are supported by the respective rotary members and each extend in a second direction intersecting the first direction. The stirring members are pivotable in response to rotation of the respective rotary members. The stirring members have different pivoting positions upon pivoting.Type: ApplicationFiled: July 27, 2018Publication date: February 28, 2019Applicant: Oki Data CorporationInventor: Shun HATANAKA
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Patent number: 9772580Abstract: A development device includes a developer accommodating part that accommodates a developer, a developer detection member that is rotatably supported inside the developer accommodating part and is for detecting an amount of the developer accommodated inside the developer accommodating part, a rotational drive member that rotates the developer detection member around an rotational axis, and a conductive contact member that is formed of a conducive material. Wherein, defining a rotary track through which the developer detection member passes while rotating, a free edge of the contact member is arranged within the rotary track such that the contact member comes in contact with the developer detection member once while the developer detection member makes one rotation, the free edge being distal from where the contact member is fixed.Type: GrantFiled: July 26, 2016Date of Patent: September 26, 2017Assignee: Oki Data CorporationInventor: Shun Hatanaka
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Publication number: 20170031269Abstract: A development device includes a developer accommodating part that accommodates a developer, a developer detection member that is rotatably supported inside the developer accommodating part and is for detecting an amount of the developer accommodated inside the developer accommodating part, a rotational drive member that rotates the developer detection member around an rotational axis, and a conductive contact member that is formed of a conducive material. Wherein, defining a rotary track through which the developer detection member passes while rotating, a free edge of the contact member is arranged within the rotary track such that the contact member comes in contact with the developer detection member once while the developer detection member makes one rotation, the free edge being distal from where the contact member is fixed.Type: ApplicationFiled: July 26, 2016Publication date: February 2, 2017Inventor: Shun HATANAKA
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Patent number: 9217952Abstract: An image forming unit includes an image bearing body, a developer bearing body that supplies a developer to the image bearing body, a developer storage portion for storing the developer, a developer reserving portion that reserves the developer, a replenishing member that replenishes the developer from the developer reserving portion to the developer storage portion, and a guide member provided between the replenishing member and the developer bearing body. The guide member temporarily holds the developer replenished by the replenishing member and regulates falling of the developer. A conveying member conveys the developer held by the guide member in an axial direction of the developer bearing body along the guide member. A detecting portion is provided between the guide member and the developer bearing body for detecting the developer. The replenishing member replenishes the developer to the developer storage portion based on a result of detection using the detecting portion.Type: GrantFiled: February 26, 2013Date of Patent: December 22, 2015Assignee: Oki Data CorporationInventors: Tetsu Koyama, Shun Hatanaka
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Patent number: 9069283Abstract: An image formation unit includes a developer storage configured to store developer, an image carrier on which an electrostatic latent image is formed, a developer carrier being in contact with the image carrier and configured to transfer developer to the electrostatic latent image, a developer housing portion located below the developer storage and above the image carrier and configured to house the developer from the developer storage, a supply port provided above the developer housing portion to communicate with the developer storage and configured to supply the developer in the developer storage into the developer housing portion, a developer amount detection member rotatably disposed in the developer housing portion at a position below the supply port, and protrusions disposed on the developer amount detection member.Type: GrantFiled: April 15, 2013Date of Patent: June 30, 2015Assignee: Oki Data CorporationInventor: Shun Hatanaka
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Publication number: 20130279925Abstract: An image formation unit includes a developer storage configured to store developer, an image carrier on which an electrostatic latent image is formed, a developer carrier being in contact with the image carrier and configured to transfer developer to the electrostatic latent image, a developer housing portion located below the developer storage and above the image carrier and configured to house the developer from the developer storage, a supply port provided above the developer housing portion to communicate with the developer storage and configured to supply the developer in the developer storage into the developer housing portion, a developer amount detection member rotatably disposed in the developer housing portion at a position below the supply port, and protrusions disposed on the developer amount detection member.Type: ApplicationFiled: April 15, 2013Publication date: October 24, 2013Applicant: Oki Data CorporationInventor: Shun HATANAKA
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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