Patents by Inventor Naoya Iwata
Naoya Iwata 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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Publication number: 20160259269Abstract: Disclosed is a developing apparatus including a first auger and a second auger for respectively conveying a developer in a first direction and a second direction, an opening for delivering the developer from the first auger to the second auger, a discharger located in the first direction from the opening to discharge the developer conveyed by the first auger, and a retention means provided on at least one of the first auger and the second auger to retain the developer circulated by the first and second augers.Type: ApplicationFiled: May 17, 2016Publication date: September 8, 2016Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Kenji TANAKA, Naoya IWATA
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Patent number: 8837991Abstract: A developing device includes spiral wings, a forward double spiral wing, clearance portion, backward double spiral wing, and short lead backward spiral wing installed on the rotational shaft of a stirring and carrying unit. The forward and backward double spiral wings have spiral directions opposite to each other, and together are formed to have an equal lead to the spiral wings. The supplying and carrying unit is disposed above the stirring and carrying unit, and the supplying and carrying unit and the stirring and carrying unit are divided by a partition having a communication portion installed at a position corresponding to the forward and backward double spiral wings.Type: GrantFiled: December 6, 2012Date of Patent: September 16, 2014Assignee: Samsung Electronics Co., Ltd.Inventor: Naoya Iwata
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Patent number: 8824933Abstract: A developing device and an image forming apparatus including the same includes an agitating and conveying unit that receives a developer, and at least one agitating and conveying member to mix and agitate the developer and convey the developer in a developer conveying direction. A developing roller faces a photosensitive drum on which an electrostatic latent image is formed, and attaches the developer to an outer surface of the developing roller. The agitating and conveying member includes a support shaft extending in the developer conveying direction. A plurality of agitation wings disposed on an outer surface of the support shaft to mix and agitate the developer. At least one paddle protrudes from the support shaft in a radial direction and extends along the shaft between adjacent agitation wings. The at least one paddle has a height increasing from an upstream side to a downstream side of the developer conveying direction.Type: GrantFiled: September 25, 2013Date of Patent: September 2, 2014Assignee: SAMSUNG Electronics Co., Ltd.Inventor: Naoya Iwata
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Patent number: 8676093Abstract: A developing device includes a first developer containing chamber, a second developer containing chamber, a first inflow section, a second inflow section, a first conveyance member and a second conveyance member. The first inflow section allows the developer to flow from the second developer containing chamber into the first developer containing chamber. The second inflow section allows the developer to flow from the first developer containing chamber into the second developer containing chamber. The first conveyance member conveys the developer contained in the first developer containing chamber in a first developer conveyance direction. The second conveyance member conveys the developer contained in the second developer containing chamber in a second developer conveyance direction.Type: GrantFiled: October 8, 2010Date of Patent: March 18, 2014Assignee: Fuji Xerox Co., Ltd.Inventors: Takashi Sakamoto, Kei Hirata, Akihide Kawamura, Naoya Iwata
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Publication number: 20140023404Abstract: A developing device and an image forming apparatus including the same includes an agitating and conveying unit that receives a developer, and at least one agitating and conveying member to mix and agitate the developer and convey the developer in a developer conveying direction. A developing roller faces a photosensitive drum on which an electrostatic latent image is formed, and attaches the developer to an outer surface of the developing roller. The agitating and conveying member includes a support shaft extending in the developer conveying direction. A plurality of agitation wings disposed on an outer surface of the support shaft to mix and agitate the developer. At least one paddle protrudes from the support shaft in a radial direction and extends along the shaft between adjacent agitation wings. The at least one paddle has a height increasing from an upstream side to a downstream side of the developer conveying direction.Type: ApplicationFiled: September 25, 2013Publication date: January 23, 2014Applicant: Samsung Electronics Co., Ltd.Inventor: Naoya IWATA
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Patent number: 8571446Abstract: A developing device and an image forming apparatus including the same includes an agitating and conveying unit that receives a developer, and at least one agitating and conveying member to mix and agitate the developer and convey the developer in a developer conveying direction. A developing roller faces a photosensitive drum on which an electrostatic latent image is formed, and attaches the developer to an outer surface of the developing roller. The agitating and conveying member includes a support shaft extending in the developer conveying direction. A plurality of agitation wings disposed on an outer surface of the support shaft to mix and agitate the developer. At least one paddle protrudes from the support shaft in a radial direction and extends along the shaft between adjacent agitation wings. The at least one paddle has a height increasing from an upstream side to a downstream side of the developer conveying direction.Type: GrantFiled: December 23, 2010Date of Patent: October 29, 2013Assignee: Samsung Electronics Co., Ltd.Inventor: Naoya Iwata
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Publication number: 20120253184Abstract: An imaging apparatus for diagnosis comprises a display unit configured to display a longitudinal-sectional image in a first display area, and display a cross-sectional image corresponding to an arbitrary position in an axial direction in the longitudinal-sectional image in a second display area; a signal processing unit divides the second display area into at least two individual areas in case of accepting an instruction to the effect that a predetermined operation is executed with respect to the first display area; and the signal processing unit displays indicators in the first display area, wherein in a case in which the second display area is divided into at least two individual areas, cross-sectional images corresponding to the axial direction position are displayed by at least two indicators in respective individual areas.Type: ApplicationFiled: March 28, 2012Publication date: October 4, 2012Applicant: TERUMO KABUSHIKI KAISHAInventors: Junya FURUICHI, Naoya IWATA
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Patent number: 8233828Abstract: A developing apparatus includes a first rotation member having a rotation shaft to transfer developer in a first direction and a mixing and transfer member having a spiral wing shape to mix and transfer the developer to the center portion of the rotation shaft, a second rotation member having a rotation shaft including a mixing and transfer member to transfer the developer in a direction opposite to the first direction by the first rotation member and a circulation auxiliary member to transfer the developer to the center portion of the rotation shaft, two end portion partition walls formed along the circulation auxiliary member, and a center partition wall formed along the mixing and transfer member at a position separated from the end portion partitions wall.Type: GrantFiled: September 23, 2009Date of Patent: July 31, 2012Assignee: SAMSUNG Electronics Co., Ltd.Inventors: Kunio Shigeta, Naoya Iwata
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Patent number: 8220310Abstract: A gas analyzer that can be miniaturized and detect a wide variety of gases with high sensitivity, and a method of gas analysis. A separation column is configured so as to pass a sample gas together with a carrier gas through the inside thereof. A surface acoustic wave device has a base material with an annularly continuous annular surface formed of at least a part of a spherical surface; a surface acoustic wave generating means capable of generating a surface acoustic wave that propagates along the annular surface; and a plurality of reaction parts provided along the annular surface so as to change a predetermined physical quantity of the surface acoustic wave in response to the components of the sample gas. The surface acoustic wave device is arranged so that the sample gas passing through the separation column is reacted with the reaction parts.Type: GrantFiled: May 24, 2007Date of Patent: July 17, 2012Assignee: Tohoku UniversityInventors: Kazushi Yamanaka, Toshihiro Tsuji, Naoya Iwata
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Publication number: 20120155928Abstract: An image forming apparatus including a developing device includes: a housing for housing a developer that includes a carrier and a toner; a development sleeve that is installed rotatably in the housing and is cylindrical and; and a layer regulator installed in the housing in such a way that an end of the layer regulator is spaced apart from an outer circumference surface of the development sleeve, wherein the layer regulator has a stacked structure including a non-magnetic material layer as a substrate, a resin layer for aiding electrifying of the toner by the carrier, and a magnetic material layer for regulating uniformity of the developer. Thus, the developing device is fabricated by using a simple process with sustainable straightness of the layer regulator even when the layer regulator operates and without formation of a step or a space between a magnetic material and a non-magnetic material.Type: ApplicationFiled: December 19, 2011Publication date: June 21, 2012Applicant: Samsung Electronics Co., Ltd.Inventor: Naoya IWATA
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Patent number: 8170447Abstract: The image forming apparatus is provided with: an image carrier; an exposure member that exposes the image carrier and forms an electrostatic latent image on the image carrier; a developing member that develops the electrostatic latent image formed on the image carrier; and a contact-retracting unit that rotates the developing member taking a predetermined position as the rotational center, and brings the developing member in contact with or proximity to the image carrier or retracts the developing member from the image carrier.Type: GrantFiled: January 28, 2008Date of Patent: May 1, 2012Assignee: Fuji Xerox Co., Ltd.Inventors: Keisuke Kubo, Kei Hirata, Tomio Onuki, Takeshi Okoshi, Toshikazu Tsumita, Taiyou Uehara, Takashi Sakamoto, Naoya Iwata, Hirohisa Kohno, Akihide Kawamura, Kazunori Koshimori
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Patent number: 8135312Abstract: There is provided a development apparatus including: a first developer storage container and a second developer storage container that store developer, having a first a and second openings, respectively; a first transport member provided within the first developer storage container, and that causes the developer to move to the second developer storage container via the first opening; a second transport member provided within the second developer storage container, and that causes the developer to move to the first developer storage container via the second opening; a developer holding member that performs development by causing the developer to move to a position facing an image holding body on which a latent image is formed; and a moving member provided so as to fit between an inner wall face of the second developer storage container and an outer edge of the second transport member.Type: GrantFiled: May 29, 2008Date of Patent: March 13, 2012Assignee: Fuji Xerox Co., LtdInventors: Hirohisa Kohno, Kazunori Koshimori, Kei Hirata, Akihide Kawamura, Naoya Iwata, Keisuke Kubo, Takashi Sakamoto, Taiyou Uehara, Toshikazu Tsumita, Takeshi Okoshi, Tomio Onuki
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Publication number: 20110158700Abstract: A developing device and an image forming apparatus including the same includes an agitating and conveying unit that receives a developer, and at least one agitating and conveying member to mix and agitate the developer and convey the developer in a developer conveying direction. A developing roller faces a photosensitive drum on which an electrostatic latent image is formed, and attaches the developer to an outer surface of the developing roller. The agitating and conveying member includes a support shaft extending in the developer conveying direction. A plurality of agitation wings disposed on an outer surface of the support shaft to mix and agitate the developer. At least one paddle protrudes from the support shaft in a radial direction and extends along the shaft between adjacent agitation wings. The at least one paddle has a height increasing from an upstream side to a downstream side of the developer conveying direction.Type: ApplicationFiled: December 23, 2010Publication date: June 30, 2011Applicant: Samsung Electronics Co., LtdInventor: Naoya IWATA
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Publication number: 20110158697Abstract: A developer bearing member that carries a developer including a carrier and a toner on its outer circumferential surface, and transports the developer, wherein a plurality of grooves having a V-shape extending in an axial direction are formed on the outer circumferential surface of the developer bearing member, and wherein an edge at which the outer circumferential surface of the developer bearing member meets an inner sidewall forming each of the plurality of grooves is removed.Type: ApplicationFiled: December 21, 2010Publication date: June 30, 2011Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Naoya Iwata, Kenji Tanaka
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Patent number: 7881640Abstract: A member for agitating and conveying a developer, includes: a rotation shaft that rotates in a given direction; a spiral-shaped conveying member that is disposed on an outer circumferential surface of the rotation shaft; and conveys a developer in a shaft direction of the rotation shaft; a protruded agitation section that protrudes, with a gap from the rotation shaft, from the spiral-shaped conveying member toward an upstream side in a developer conveying direction; and agitates the developer; and a diameter directional conveying section that is disposed between adjacent spires of the spiral-shaped conveying member; is disposed in a downstream side in the developer conveying direction with respect to the protruded agitation section; and gives a diameter directional conveying force to the developer.Type: GrantFiled: April 18, 2008Date of Patent: February 1, 2011Assignee: Fuji Xerox Co., Ltd.Inventors: Naoya Iwata, Takashi Sakamoto, Yuya Kato
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Publication number: 20110020037Abstract: A developing device includes a first developer containing chamber, a second developer containing chamber, a first inflow section, a second inflow section, a first conveyance member and a second conveyance member. The first inflow section allows the developer to flow from the second developer containing chamber into the first developer containing chamber. The second inflow section allows the developer to flow from the first developer containing chamber into the second developer containing chamber. The first conveyance member conveys the developer contained in the first developer containing chamber in a first developer conveyance direction. The second conveyance member conveys the developer contained in the second developer containing chamber in a second developer conveyance direction.Type: ApplicationFiled: October 8, 2010Publication date: January 27, 2011Applicant: FUJI XEROX CO., LTD.Inventors: Takashi SAKAMOTO, Kei Hirata, Akihide Kawamura, Naoya Iwata
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Patent number: 7856196Abstract: A developing device includes a developer holding member that carries a developer; an upper developer housing section that houses the developer; a lower developer housing section that has a bottom surface lower than a bottom surface of the upper developer housing section and houses the developer; a toner supply section that includes an upper toner supply part, a lower toner supply part, and a toner transport section; an upper conveying section that includes a rotation shaft, a first conveying member, a second conveying member, and a diameter direction conveying part; and a lower conveying section that conveys at least one of the developer and the toner in a direction opposite to the conveying direction by the first conveying member.Type: GrantFiled: April 25, 2008Date of Patent: December 21, 2010Assignee: Fuji Xerox Co., Ltd.Inventors: Takashi Sakamoto, Naoya Iwata, Yuya Kato
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Patent number: 7835672Abstract: A developing device includes a first developer containing chamber, a second developer containing chamber, a first inflow section, a second inflow section, a first conveyance member and a second conveyance member. The first inflow section allows the developer to flow from the second developer containing chamber into the first developer containing chamber. The second inflow section allows the developer to flow from the first developer containing chamber into the second developer containing chamber. The first conveyance member conveys the developer contained in the first developer containing chamber in a first developer conveyance direction. The second conveyance member conveys the developer contained in the second developer containing chamber in a second developer conveyance direction.Type: GrantFiled: March 5, 2008Date of Patent: November 16, 2010Assignee: Fuji Xerox Co., Ltd.Inventors: Takashi Sakamoto, Kei Hirata, Akihide Kawamura, Naoya Iwata
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Patent number: 7835656Abstract: A developing device includes: a developer carrier; a first housing chamber; a second housing chamber; a first inflow portion; a first conveying member; a second conveying member; and a concentration detecting member.Type: GrantFiled: March 31, 2008Date of Patent: November 16, 2010Assignee: Fuji Xerox Co., Ltd.Inventors: Naoya Iwata, Takashi Sakamoto, Akihide Kawamura, Kei Hirata
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Publication number: 20100129117Abstract: A developing apparatus includes a first rotation member having a rotation shaft to transfer developer in a first direction and a mixing and transfer member having a spiral wing shape to mix and transfer the developer to the center portion of the rotation shaft, a second rotation member having a rotation shaft including a mixing and transfer member to transfer the developer in a direction opposite to the first direction by the first rotation member and a circulation auxiliary member to transfer the developer to the center portion of the rotation shaft, two end portion partition walls formed along the circulation auxiliary member, and a center partition wall formed along the mixing and transfer member at a position separated from the end portion partitions wall.Type: ApplicationFiled: September 23, 2009Publication date: May 27, 2010Applicant: Samsung Electronics Co., Ltd.Inventors: Kunio SHIGETA, Naoya Iwata