Patents by Inventor Takahiro Seki
Takahiro Seki 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: 20190221770Abstract: A display unit includes a flexible substrate, a display device layer, a polarizer, a first moisture barrier film, and a second moisture barrier film. The display device layer is provided on the flexible substrate. The polarizer is provided over the flexible substrate with the display device layer being interposed between the flexible substrate and the polarizer and has a first surface opposed to the flexible substrate, a second surface facing the first surface, and an end surface connecting the first surface and the second surface. The first moisture barrier film covers the first surface of the polarizer. The second moisture barrier film covers the second surface and the end surface of the polarizer, and is in contact with the first moisture barrier film.Type: ApplicationFiled: December 28, 2018Publication date: July 18, 2019Inventors: Takahiro SEKI, Kanta JUDAI
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Publication number: 20190012946Abstract: A display device includes: a display unit that includes a plurality of pixels and a plurality of scanning signal lines delivering scanning pulses to the plurality of pixels; and a scanning unit that includes a first switch provided in association with each of the plurality of scanning signal lines and selectively extracting the scanning pulse from one of a plurality of scanning pulse signals including the plurality of scanning pulses.Type: ApplicationFiled: July 9, 2018Publication date: January 10, 2019Inventors: Seiichiro Jinta, Akira Yumoto, Takahiro Seki
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Patent number: 10109816Abstract: A display unit includes a display panel and a first protective sheet. The display panel has a light-emitting surface. The first protective sheet is provided on the light-emitting surface. The first protective sheet provided in the display unit includes a first impact dispersion layer, a first strain relaxation layer, and a gel-like first impact absorption layer. The first impact dispersion layer has a pencil hardness of 3H or higher. The first strain relaxation layer has flexural strength and tensile strength both higher than the flexural strength and the tensile strength of the first impact dispersion layer. The gel-like first impact absorption layer has a thickness of a submillimeter order or more. The first impact absorption layer, the first strain relaxation layer, and the first impact dispersion layer are arranged in this order from the light-emitting surface.Type: GrantFiled: February 23, 2017Date of Patent: October 23, 2018Assignee: JOLED Inc.Inventors: Takahiro Seki, Michitoshi Tsuchiya, Makoto Noda
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Patent number: 10043431Abstract: A display device includes: a display unit that includes a plurality of pixels and a plurality of scanning signal lines delivering scanning pulses to the plurality of pixels; and a scanning unit that includes a first switch provided in association with each of the plurality of scanning signal lines and selectively extracting the scanning pulse from one of a plurality of scanning pulse signals including the plurality of scanning pulses.Type: GrantFiled: July 10, 2013Date of Patent: August 7, 2018Assignee: Sony CorporationInventors: Seiichiro Jinta, Akira Yumoto, Takahiro Seki
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Patent number: 9857734Abstract: An image forming apparatus includes a plurality of image bearers, a plurality of developing devices, a plurality of first transfer devices disposed opposite the plurality of image bearers, a second transfer device, a cleaning device to remove toner remaining on the intermediate transferor after a secondary transfer process, and a processor to control the plurality of developing devices to perform a refresh process to discharge toner from the plurality of developing devices to the plurality of image bearers. Among toner of the colors, toner having a first circularity first reaches the cleaning device and toner having a second circularity higher than the first circularity subsequently reaches the cleaning device in the refresh process.Type: GrantFiled: November 1, 2016Date of Patent: January 2, 2018Assignee: Ricoh Company, Ltd.Inventors: Takeshi Sakashita, Kenji Nakamura, Masanari Fujita, Yuuji Meguro, Takahiro Seki, Naoki Takai, Takuya Akiyama
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Patent number: 9817340Abstract: An image forming apparatus includes an intermediate transfer body, a plurality of image bearers, a plurality of developing devices, a plurality of primary transfer devices, a secondary transfer device, and a cleaner. The plurality of image bearers are disposed side by side along the intermediate transfer body. In a refreshing mode, the plurality of developing devices form toner images on the plurality of image bearers during a non-image-formation period and the cleaner cleans a surface of the intermediate transfer body. In the refreshing mode, a toner image formed on one image bearer of the plurality of image bearers, which differs from a most downstream image bearer of the plurality of image bearers in a direction of conveyance of the intermediate transfer body, reaches the cleaner first of the toner images formed on the plurality of image bearers.Type: GrantFiled: September 21, 2016Date of Patent: November 14, 2017Assignee: Ricoh Company, Ltd.Inventors: Takahiro Seki, Masanari Fujita, Takeshi Sakashita, Takeshi Yamashita, Naoki Takai, Takuya Akiyama
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Publication number: 20170263889Abstract: A display unit includes a display panel and a first protective sheet. The display panel has a light-emitting surface. The first protective sheet is provided on the light-emitting surface. The first protective sheet provided in the display unit includes a first impact dispersion layer, a first strain relaxation layer, and a gel-like first impact absorption layer. The first impact dispersion layer has a pencil hardness of 3H or higher. The first strain relaxation layer has flexural strength and tensile strength both higher than the flexural strength and the tensile strength of the first impact dispersion layer. The gel-like first impact absorption layer has a thickness of a submillimeter order or more. The first impact absorption layer, the first strain relaxation layer, and the first impact dispersion layer are arranged in this order from the light-emitting surface.Type: ApplicationFiled: February 23, 2017Publication date: September 14, 2017Inventors: Takahiro Seki, Michitoshi Tsuchiya, Makoto Noda
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Publication number: 20170139353Abstract: An image forming apparatus includes a plurality of image bearers, a plurality of developing devices, a plurality of first transfer devices disposed opposite the plurality of image bearers, a second transfer device, a cleaning device to remove toner remaining on the intermediate transferor after a secondary transfer process, and a processor to control the plurality of developing devices to perform a refresh process to discharge toner from the plurality of developing devices to the plurality of image bearers. Among toner of the colors, toner having a first circularity first reaches the cleaning device and toner having a second circularity higher than the first circularity subsequently reaches the cleaning device in the refresh process.Type: ApplicationFiled: November 1, 2016Publication date: May 18, 2017Inventors: Takeshi Sakashita, Kenji Nakamura, Masanari Fujita, Yuuji Meguro, Takahiro Seki, Naoki Takai, Takuya Akiyama
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Publication number: 20170097589Abstract: An image forming apparatus includes an intermediate transfer body, a plurality of image bearers, a plurality of developing devices, a plurality of primary transfer devices, a secondary transfer device, and a cleaner. The plurality of image bearers is disposed side by side along the intermediate transfer body In a refreshing mode, the plurality of developing devices form toner images on the plurality of image bearers during a non-image-formation period and the cleaner cleans a surface of the intermediate transfer body. In the refreshing mode, a toner image formed on one image bearer of the plurality of image bearers, which differs from a most downstream image bearer of the plurality of image bearers in a direction of conveyance of the intermediate transfer body, reaches the cleaner first of the toner images formed on the plurality of image bearers.Type: ApplicationFiled: September 21, 2016Publication date: April 6, 2017Inventors: Takahiro SEKI, Masanari Fujita, Takeshi Sakashita, Takeshi Yamashita, Naoki Takai, Takuya Akiyama
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Patent number: 9412289Abstract: A display unit that drives pixels field sequentially includes pixel circuits disposed in a matrix form of rows and columns and a drive control section that causes the pixel circuits to display image frames of input image data such that a single frame of the image frames is displayed in two parts as a first sub-frame and as a second sub-frame. The first and second sub-frames are displayed field sequentially by different portions of the pixel circuits. The first sub-frame is displayed by a first portion of the pixel circuits that are located in a checked pattern, while the second sub-frame is displayed by the remaining pixel circuits.Type: GrantFiled: July 3, 2013Date of Patent: August 9, 2016Assignee: Sony CorporationInventors: Seiichiro Jinta, Akira Yumoto, Takahiro Seki
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Patent number: 9082733Abstract: A display unit comprising an organic layer between a light-emitting section portion of a first electrode layer and a light-emitting section portion of a second electrode layer. Light is emissible from within the organic layer. An aperture-defining insulating film is between a contact section of the first electrode layer and a gap section portion of the second electrode layer. The thickness of the gap section portion of the second electrode layer is greater than the thickness of the light-emitting section portion of the second electrode layer.Type: GrantFiled: October 31, 2014Date of Patent: July 14, 2015Assignee: Sony CorporationInventors: Seiichiro Jinta, Makoto Noda, Gaku Izumi, Kenichi Izumi, Manabu Kodate, Takahiro Seki, Michitoshi Tsuchiya
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Publication number: 20150053963Abstract: A display unit comprising an organic layer between a light-emitting section portion of a first electrode layer and a light-emitting section portion of a second electrode layer. Light is emissible from within the organic layer. An aperture-defining insulating film is between a contact section of the first electrode layer and a gap section portion of the second electrode layer. The thickness of the gap section portion of the second electrode layer is greater than the thickness of the light-emitting section portion of the second electrode layer.Type: ApplicationFiled: October 31, 2014Publication date: February 26, 2015Inventors: Seiichiro Jinta, Makoto Noda, Gaku Izumi, Kenichi Izumi, Manabu Kodate, Takahiro Seki, Michitoshi Tsuchiya
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Patent number: 8907331Abstract: A display unit comprising an organic layer between a light-emitting section portion of a first electrode layer and a light-emitting section portion of a second electrode layer. Light is emissible from within the organic layer. An aperture-defining insulating film is between a contact section of the first electrode layer and a gap section portion of the second electrode layer. The thickness of the gap section portion of the second electrode layer is greater than the thickness of the light-emitting section portion of the second electrode layer.Type: GrantFiled: July 3, 2013Date of Patent: December 9, 2014Assignee: Sony CorporationInventors: Seiichiro Jinta, Makoto Noda, Gaku Izumi, Kenichi Izumi, Manabu Kodate, Takahiro Seki, Michitoshi Tsuchiya
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Patent number: 8837969Abstract: An image forming apparatus includes: an image carrier; a toner image forming unit that forms a toner image on the image carrier; a transfer unit that transfers the toner image on the image carrier to a transfer target having ridges and valleys on a surface thereof; an adjusting unit that adjusts a ratio of A/B, where A is a transfer ratio [%] from the image carrier to a valley portion of the transfer target while B is a transfer ratio [%] from the image carrier to a ridge portion of the transfer target, based on an adjustment input by a user; and a control unit that controls a transfer condition of the transfer unit based on the ratio of A/B adjusted by the adjusting unit.Type: GrantFiled: October 31, 2013Date of Patent: September 16, 2014Assignee: Ricoh Company, Ltd.Inventors: Emiko Shiraishi, Yasuhiko Ogino, Reki Nakamura, Keigo Nakamura, Takahiro Seki
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Patent number: 8774655Abstract: An apparatus includes: an image carrier; a charger to uniformly charge a surface of the image carrier; an exposing unit to perform write scanning on the image carrier; a developing unit that includes a developer carrier carrying a developer including a toner and that is configured to perform a visible image process on an electrostatic latent image formed on the image carrier; and a transferor to transfer a toner image that has been subjected to the process onto a material. If length Lg of a non-image part directly before an image part in an image carrier moving direction has the relation of Lg??·Ds/(Vs/Vp), where Vp and Vs are circumferential velocities of the image carrier and the developer carrier and Ds is a diameter of the developer carrier, suppression of toner attachment on the material is controlled in a predetermined length from an image front end in the direction.Type: GrantFiled: September 9, 2010Date of Patent: July 8, 2014Assignee: Ricoh Company, LimitedInventors: Motohiro Usami, Takahiro Seki, Masashi Nagayama, Shinji Aoki, Jun Hitosugi
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Publication number: 20140079423Abstract: An image forming apparatus includes: an image carrier; a toner image forming unit that forms a toner image on the image carrier; a transfer unit that transfers the toner image on the image carrier to a transfer target having ridges and valleys on a surface thereof; an adjusting unit that adjusts a ratio of A/B, where A is a transfer ratio [%] from the image carrier to a valley portion of the transfer target while B is a transfer ratio [%] from the image carrier to a ridge portion of the transfer target, based on an adjustment input by a user; and a control unit that controls a transfer condition of the transfer unit based on the ratio of A/B adjusted by the adjusting unit.Type: ApplicationFiled: October 31, 2013Publication date: March 20, 2014Inventors: Emiko SHIRAISHI, Yasuhiko Ogino, Reki Nakamura, Keigo Nakamura, Takahiro Seki
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Publication number: 20140035974Abstract: A display unit that drives pixels field sequentially includes pixel circuits disposed in a matrix form of rows and columns and a drive control section that causes the pixel circuits to display image frames of input image data such that a single frame of the image frames is displayed in two parts as a first sub-frame and as a second sub-frame. The first and second sub-frames are displayed field sequentially by different portions of the pixel circuits. The first sub-frame is displayed by a first portion of the pixel circuits that are located in a checked pattern, while the second sub-frame is displayed by the remaining pixel circuits.Type: ApplicationFiled: July 3, 2013Publication date: February 6, 2014Inventors: Seiichiro Jinta, Akira Yumoto, Takahiro Seki
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Publication number: 20140035890Abstract: A display device includes: a display unit that includes a plurality of pixels and a plurality of scanning signal lines delivering scanning pulses to the plurality of pixels; and a scanning unit that includes a first switch provided in association with each of the plurality of scanning signal lines and selectively extracting the scanning pulse from one of a plurality of scanning pulse signals including the plurality of scanning pulses.Type: ApplicationFiled: July 10, 2013Publication date: February 6, 2014Inventors: Seiichiro Jinta, Akira Yumoto, Takahiro Seki
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Publication number: 20140034921Abstract: A display unit comprising an organic layer between a light-emitting section portion of a first electrode layer and a light-emitting section portion of a second electrode layer. Light is emissible from within the organic layer. An aperture-defining insulating film is between a contact section of the first electrode layer and a gap section portion of the second electrode layer. The thickness of the gap section portion of the second electrode layer is greater than the thickness of the light-emitting section portion of the second electrode layer.Type: ApplicationFiled: July 3, 2013Publication date: February 6, 2014Inventors: Seiichiro Jinta, Makoto Noda, Gaku Izumi, Kenichi Izumi, Manabu Kodate, Takahiro Seki, Michitoshi Tsuchiya
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Patent number: 8600247Abstract: An image forming apparatus includes: an image carrier; a toner image forming unit that forms a toner image on the image carrier; a transfer unit that transfers the toner image on the image carrier to a transfer target having ridges and valleys on a surface thereof; an adjusting unit that adjusts a ratio of A/B, where A is a transfer ratio [%] from the image carrier to a valley portion of the transfer target while B is a transfer ratio [%] from the image carrier to a ridge portion of the transfer target, based on an adjustment input by a user; and a control unit that controls a transfer condition of the transfer unit based on the ratio of A/B adjusted by the adjusting unit.Type: GrantFiled: March 8, 2011Date of Patent: December 3, 2013Assignee: Ricoh Company, LimitedInventors: Emiko Shiraishi, Yasuhiko Ogino, Reki Nakamura, Keigo Nakamura, Takahiro Seki