Patents by Inventor Emi Kita
Emi Kita 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: 10254680Abstract: A powder container is removably mountable in one of a process cartridge and an image forming apparatus. The powder container includes a discharge port to discharge powder stored inside the powder container, a collection port to correct the powder from outside of the powder container, a first shutter to open and close the discharge port, a first opening and closing member to open and close the first shutter, a second shutter to open and close the collection port, a second opening and closing member to open and close the second shutter, and a shaft portion to link the first opening and closing member and the second opening and closing member.Type: GrantFiled: March 8, 2018Date of Patent: April 9, 2019Assignee: Ricoh Company Ltd.Inventors: Emi Kita, Shinichi Arasawa
-
Publication number: 20190064699Abstract: A powder container includes a powder chamber for containing powder for forming images, a powder outlet formed in a face of the powder container, and a shutter assembly to open and close the powder outlet and including first and second shutters. The first shutter is movable between a sealing position to close the powder outlet and an open position to open the powder outlet and includes a pressed member to cancel retention of the first shutter at the sealing position. The second shutter includes a pressing projection that interferes with the pressed member of the first shutter and is movable between a shielding position to cover the pressed member without interference between the pressing projection and the pressed member and a releasing position to press the pressed member with the pressing projection.Type: ApplicationFiled: October 26, 2018Publication date: February 28, 2019Inventors: Kentaro NODERA, Emi KITA, Akihiro TAKAYAMA, Susumu TATEYAMA, Shinnosuke KOSHIZUKA, Tatsuya KUBO, Teppei KIKUCHI
-
Publication number: 20180356748Abstract: A powder storage container is provided. The powder storage container includes a container body, a discharge port, a conveyer, a stirrer, a return port, and a partition wall. The container body is configured to contain powder. The powder contained in the container body is dischargeable through the discharge port. The conveyer is configured to convey the powder to the discharge port. The stirrer is configured to stir the powder contained in the container body by rotating. The return port is disposed outside a rotational locus of the stirrer in a radial direction, and the powder conveyed by the conveyer is returnable through the return port toward the stirrer. The partition wall is disposed between the stirrer and the return port with at least a part of the partition wall positioned above the return port.Type: ApplicationFiled: April 18, 2018Publication date: December 13, 2018Applicant: Ricoh Company, Ltd.Inventors: Kazuki MATSUMOTO, Emi KITA, Kenji NAKAMURA, Minoru TOYODA
-
Patent number: 10146154Abstract: A powder container includes a powder chamber for containing powder for forming images, a powder outlet formed in a face of the powder container, and a shutter assembly to open and close the powder outlet and including first and second shutters. The first shutter is movable between a sealing position to close the powder outlet and an open position to open the powder outlet and includes a pressed member to cancel retention of the first shutter at the sealing position. The second shutter includes a pressing projection that interferes with the pressed member of the first shutter and is movable between a shielding position to cover the pressed member without interference between the pressing projection and the pressed member and a releasing position to press the pressed member with the pressing projection.Type: GrantFiled: August 30, 2017Date of Patent: December 4, 2018Assignee: Ricoh Company, Ltd.Inventors: Kentaro Nodera, Emi Kita, Akihiro Takayama, Susumu Tateyama, Shinnosuke Koshizuka, Tatsuya Kubo, Teppei Kikuchi
-
Publication number: 20180267430Abstract: A powder container is removably mountable in one of a process cartridge and an image forming apparatus. The powder container includes a discharge port to discharge powder stored inside the powder container, a collection port to correct the powder from outside of the powder container, a first shutter to open and close the discharge port, a first opening and closing member to open and close the first shutter, a second shutter to open and close the collection port, a second opening and closing member to open and close the second shutter, and a shaft portion to link the first opening and closing member and the second opening and closing member.Type: ApplicationFiled: March 8, 2018Publication date: September 20, 2018Inventors: Emi Kita, Shinichi Arasawa
-
Publication number: 20170363987Abstract: A powder container includes a powder chamber for containing powder for forming images, a powder outlet formed in a face of the powder container, and a shutter assembly to open and close the powder outlet and including first and second shutters. The first shutter is movable between a sealing position to close the powder outlet and an open position to open the powder outlet and includes a pressed member to cancel retention of the first shutter at the sealing position. The second shutter includes a pressing projection that interferes with the pressed member of the first shutter and is movable between a shielding position to cover the pressed member without interference between the pressing projection and the pressed member and a releasing position to press the pressed member with the pressing projection.Type: ApplicationFiled: August 30, 2017Publication date: December 21, 2017Inventors: Kentaro NODERA, Emi KITA, Akihiro TAKAYAMA, Susumu TATEYAMA, Shinnosuke KOSHIZUKA, Tatsuya KUBO, Teppei KIKUCHI
-
Patent number: 9835977Abstract: A powder container includes a powder chamber for containing powder for forming images, a powder outlet formed in a face of the powder container, and a shutter assembly to open and close the powder outlet and including first and second shutters. The first shutter is movable between a sealing position to close the powder outlet and an open position to open the powder outlet and includes a pressed member to cancel retention of the first shutter at the sealing position. The second shutter includes a pressing projection that interferes with the pressed member of the first shutter and is movable between a shielding position to cover the pressed member without interference between the pressing projection and the pressed member and a releasing position to press the pressed member with the pressing projection.Type: GrantFiled: August 25, 2016Date of Patent: December 5, 2017Assignee: Ricoh Company, Ltd.Inventors: Kentaro Nodera, Emi Kita, Akihiro Takayama, Susumu Tateyama, Shinnosuke Koshizuka, Tatsuya Kubo, Teppei Kikuchi
-
Patent number: 9772601Abstract: A process unit includes a rotatable image bearer, an optical writing head to expose the image bearer within an maximum exposure range in an axial direction of the image bearer, a developer bearer, spacers disposed in axial end portions of the image bearer to determine a position of the optical writing head relative to the image bearer and slidingly contact the image bearer, a cleaner disposed downstream from the developer bearer in an image bearer rotation direction, and a remover to slidingly contact the axial end portion of the image bearer to remove a substance adhering thereto. In the axial direction, inner ends of the spacers are positioned inside a toner layer range of the developer bearer extending beyond a largest sheet width. The remover is disposed downstream from the cleaner and crossing a line extending from the inner end of the spacer perpendicularly to the axial direction.Type: GrantFiled: July 29, 2016Date of Patent: September 26, 2017Assignee: Ricoh Company, Ltd.Inventors: Mitsutoshi Kichise, Takeshi Yamashita, Kazuki Matsumoto, Emi Kita, Naoki Nakatake, Takeshi Sakashita, Takuya Akiyama
-
Patent number: 9733607Abstract: A cleaning device in accordance with the present disclosure includes a cleaning member to clean toner on an image bearer, a toner conveyor that rotates to convey toner cleaned by the cleaning member, and an agitator that includes a bent portion that is in contact with the toner conveyor, and the agitator vibrates due to the rotation of the toner conveyor. The agitator includes a plurality of arm members, and a first end of a first arm member of the plurality of arm members is attached to a second end of a second arm member of the plurality of arm members.Type: GrantFiled: May 18, 2016Date of Patent: August 15, 2017Assignee: RICOH COMPANY, LTD.Inventors: Kazuki Matsumoto, Naoki Nakatake, Emi Kita, Mitsutoshi Kichise
-
Publication number: 20170031310Abstract: A process unit includes a rotatable image bearer, an optical writing head to expose the image bearer within an maximum exposure range in an axial direction of the image bearer, a developer bearer, spacers disposed in axial end portions of the image bearer to determine a position of the optical writing head relative to the image bearer and slidingly contact the image bearer, a cleaner disposed downstream from the developer bearer in an image bearer rotation direction, and a remover to slidingly contact the axial end portion of the image bearer to remove a substance adhering thereto. In the axial direction, inner ends of the spacers are positioned inside a toner layer range of the developer bearer extending beyond a largest sheet width. The remover is disposed downstream from the cleaner and crossing a line extending from the inner end of the spacer perpendicularly to the axial direction.Type: ApplicationFiled: July 29, 2016Publication date: February 2, 2017Applicant: Ricoh Company, Ltd.Inventors: Mitsutoshi KICHISE, Takeshi YAMASHITA, Kazuki MATSUMOTO, Emi KITA, Naoki NAKATAKE, Takeshi SAKASHITA, Takuya AKIYAMA
-
Publication number: 20160363887Abstract: A powder container includes a powder chamber for containing powder for forming images, a powder outlet formed in a face of the powder container, and a shutter assembly to open and close the powder outlet and including first and second shutters. The first shutter is movable between a sealing position to close the powder outlet and an open position to open the powder outlet and includes a pressed member to cancel retention of the first shutter at the sealing position. The second shutter includes a pressing projection that interferes with the pressed member of the first shutter and is movable between a shielding position to cover the pressed member without interference between the pressing projection and the pressed member and a releasing position to press the pressed member with the pressing projection.Type: ApplicationFiled: August 25, 2016Publication date: December 15, 2016Inventors: Kentaro NODERA, Emi KITA, Akihiro TAKAYAMA, Susumu TATEYAMA, Shinnosuke KOSHIZUKA, Tatsuya KUBO, Teppei KIKUCHI
-
Publication number: 20160342129Abstract: A cleaning device in accordance with the present disclosure includes a cleaning member to clean toner on an image bearer, a toner conveyor that rotates to convey toner cleaned by the cleaning member, and an agitator that includes a bent portion that is in contact with the toner conveyor, and the agitator vibrates due to the rotation of the toner conveyor. The agitator includes a plurality of arm members, and a first end of a first arm member of the plurality of arm members is attached to a second end of a second arm member of the plurality of arm members.Type: ApplicationFiled: May 18, 2016Publication date: November 24, 2016Inventors: Kazuki MATSUMOTO, Naoki NAKATAKE, Emi KITA, Mitsutoshi KICHISE
-
Patent number: 9459556Abstract: A powder container includes a powder chamber for containing powder for forming images, a powder outlet formed in a face of the powder container, and a shutter assembly to open and close the powder outlet and including first and second shutters. The first shutter is movable between a sealing position to close the powder outlet and an open position to open the powder outlet and includes a pressed member to cancel retention of the first shutter at the sealing position. The second shutter includes a pressing projection that interferes with the pressed member of the first shutter and is movable between a shielding position to cover the pressed member without interference between the pressing projection and the pressed member and a releasing position to press the pressed member with the pressing projection.Type: GrantFiled: August 11, 2015Date of Patent: October 4, 2016Assignee: Ricoh Company, Ltd.Inventors: Kentaro Nodera, Emi Kita, Akihiro Takayama, Susumu Tateyama, Shinnosuke Koshizuka, Tatsuya Kubo, Teppei Kikuchi
-
Publication number: 20150346635Abstract: A powder container includes a powder chamber for containing powder for forming images, a powder outlet formed in a face of the powder container, and a shutter assembly to open and close the powder outlet and including first and second shutters. The first shutter is movable between a sealing position to close the powder outlet and an open position to open the powder outlet and includes a pressed member to cancel retention of the first shutter at the sealing position. The second shutter includes a pressing projection that interferes with the pressed member of the first shutter and is movable between a shielding position to cover the pressed member without interference between the pressing projection and the pressed member and a releasing position to press the pressed member with the pressing projection.Type: ApplicationFiled: August 11, 2015Publication date: December 3, 2015Inventors: Kentaro NODERA, Emi KITA, Akihiro TAKAYAMA, Susumu TATEYAMA, Shinnosuke KOSHIZUKA, Tatsuya KUBO, Teppei KIKUCHI
-
Patent number: 9146497Abstract: A powder container includes a powder chamber for containing powder for forming images, a powder outlet formed in a face of the powder container, and a shutter assembly to open and close the powder outlet and including first and second shutters. The first shutter is movable between a sealing position to close the powder outlet and an open position to open the powder outlet and includes a pressed member to cancel retention of the first shutter at the sealing position. The second shutter includes a pressing projection that interferes with the pressed member of the first shutter and is movable between a shielding position to cover the pressed member without interference between the pressing projection and the pressed member and a releasing position to press the pressed member with the pressing projection.Type: GrantFiled: March 4, 2013Date of Patent: September 29, 2015Assignee: Ricoh Company, Ltd.Inventors: Kentaro Nodera, Emi Kita, Akihiro Takayama, Susumu Tateyama, Shinnosuke Koshizuka, Tatsuya Kubo, Teppei Kikuchi
-
Patent number: 9134697Abstract: A powder container includes a powder containing compartment having a powder outlet connectable to a horizontally extending tube of an apparatus in conjunction with installation of the powder container in the apparatus, a removably insertable plug member to open and close the powder outlet in conjunction with installation of the powder container, and at least one discrimination protrusion projecting from an outer circumferential surface of the powder container. The powder contained in the powder containing compartment is discharged from the powder outlet thereof to the tube. A downstream end of the discrimination protrusion is positioned downstream from a downstream end of the powder outlet of the powder containing compartment in an installation direction in which the powder container is installed in the apparatus, and at least one of shape, arrangement, and quantity of the discrimination protrusion is unique to the type of powder contained in the powder container.Type: GrantFiled: May 16, 2014Date of Patent: September 15, 2015Assignee: RICOH COMPANY, LTD.Inventors: Yuki Oshikawa, Emi Kita
-
Patent number: 9109633Abstract: A driving force transmission mechanism includes a connection for integrally rotating a driving shaft on the driving source side and a driven shaft of a rotary member. The connection includes a tubular boss portion; and a fitting shaft portion fitted into the tubular boss portion. An inner shaft portion is provided in a projecting manner from bottom center of the tubular boss portion toward inside the tubular boss portion. An inner recessed portion into which the inner shaft portion fits is provided in center of a leading edge plane for fitting of the fitting shaft portion. Micro gaps are provided between an inner surface of the tubular boss portion and an outer surface of the fitting shaft portion and between an inner surface of the inner recessed portion and an outer surface of the inner shaft portion.Type: GrantFiled: February 16, 2012Date of Patent: August 18, 2015Assignee: RICOH COMPANY, LIMITEDInventors: Hideo Yoshizawa, Kiyonori Tsuda, Takuzi Yoneda, Yutaka Takahashi, Emi Kita, Yuki Oshikawa, Kohichi Utsunomiya
-
Patent number: 8923726Abstract: A development device includes a development casing, a developer bearer disposed facing a latent image bearer through an opening formed in the development casing, a magnetic field generator, a developer regulator disposed facing the developer bearer, a first seal member to cover a clearance between the latent image bearer and a rim of the development casing upstream from the opening, and a second seal member. The first seal member includes a first end portion fixed to the rim of the development casing and a second end portion in contact with the latent image bearer, and the second seal member includes a first end portion fixed to an inner face of the development casing farther from the latent image bearer than the first seal member, and a second end portion hanging to contact the developer carried on the developer bearer downstream from the developer regulator.Type: GrantFiled: March 26, 2012Date of Patent: December 30, 2014Assignee: Ricoh Company, Ltd.Inventors: Kiyonori Tsuda, Hideo Yoshizawa, Kohichi Utsunomiya, Takuzi Yoneda, Yutaka Takahashi, Emi Kita, Yuki Oshikawa
-
Patent number: D723099Type: GrantFiled: February 8, 2013Date of Patent: February 24, 2015Assignee: Ricoh Company, Ltd.Inventors: Tomohiro Kubota, Sho Tsuritani, Yoshiyuki Shimizu, Emi Kita, Manabu Hamada, Masato Tsuji, Naoki Nakatake
-
Patent number: D724655Type: GrantFiled: November 12, 2013Date of Patent: March 17, 2015Assignee: Ricoh Company, Ltd.Inventors: Tomohiro Kubota, Sho Tsuritani, Yoshiyuki Shimizu, Emi Kita, Manabu Hamada, Masato Tsuji, Naoki Nakatake