Patents by Inventor Yoshiaki Nagao
Yoshiaki Nagao 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: 10951791Abstract: An image processing apparatus includes circuitry to: obtain a read image read from an image of a document output from an image reading device; detect an edge between a background area and a document area in the read image; sample a detection result of the edge at each first interval in a first direction to extract a first boundary point group including a plurality of boundary points; sample the detection result of the edge at each second interval in the first direction to extract a second boundary point group including a plurality of boundary points; determine a noise removal condition based on the first boundary point group; remove, from the second boundary point group, a boundary point satisfying the noise removal condition as noise; and calculate a linear equation approximating the second boundary point group from which the noise is removed.Type: GrantFiled: February 25, 2020Date of Patent: March 16, 2021Assignee: Ricoh Company, Ltd.Inventors: Ayumu Hashimoto, Hajime Tsukahara, Hiroki Shirado, Yuuki Nakada, Tomohiko Ono, Tatsuya Ozaki, Hiroshi Kubo, Kimiharu Yanagisawa, Yoshiaki Nagao, Masahiro Itoh
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Publication number: 20210041651Abstract: Provided is an optical fiber ribbon in which four or more optical fibers including a colored layer are arranged in parallel. A color of the colored layer includes: a first color for coloring the colored layer of the optical fiber arranged on one end side in an arrangement direction; and a second color which is a color different from the first color and which colors the colored layer of other optical fibers not colored with the first color. The number of optical fibers colored with the first color is different from the number of optical fibers colored with the second color.Type: ApplicationFiled: March 5, 2019Publication date: February 11, 2021Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Yuuki SHIMODA, Yoshiaki NAGAO, Fumiaki SATO
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Patent number: 10845556Abstract: An optical fiber cable includes optical fiber ribbons, a slot rod and a cable jacket. The slot rod has slot grooves in which the optical fiber ribbons are housed. The cable jacket covers an outside of the slot rod. The optical fiber ribbons have, in a state in which optical fibers having an outer diameter of 0.22 mm or less are arranged in parallel, connecting portions at which adjacent ones of the optical fibers are connected to one another and non-connecting portions at which adjacent ones of the optical fibers are not connected to one another, which are provided intermittently in a longitudinal direction. A density of core number of the optical fibers included in the optical fiber cable is 4.8 cores/mm2 or more in a cross section of the optical fiber cable.Type: GrantFiled: August 8, 2017Date of Patent: November 24, 2020Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Fumiaki Sato, Taro Fujita, Nayu Yanagawa, Yoshiaki Nagao, Nobuyuki Suzuki
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Publication number: 20200336615Abstract: An edge detecting device includes processing circuitry. The processing circuitry is configured to acquire first color information and second color information in an image including a document region and a background region outside the document region. The first color information is color information of the background region and the second color information is color information of the document region. The processing circuitry is configured to detect a boundary between the background region and the document region from a change in color information between the first color information and the second color information.Type: ApplicationFiled: April 7, 2020Publication date: October 22, 2020Inventors: Tomohiko ONO, Hajime TSUKAHARA, Hiroki SHIRADO, Ayumu HASHIMOTO, Yuuki NAKADA, Tatsuya OZAKI, Hiroshi KUBO, Yoshiaki NAGAO, Kimiharu YANAGISAWA, Masahiro ITOH
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Publication number: 20200296255Abstract: An image processing apparatus includes circuitry to: obtain a read image read from an image of a document output from an image reading device; detect an edge between a background area and a document area in the read image; sample a detection result of the edge at each first interval in a first direction to extract a first boundary point group including a plurality of boundary points; sample the detection result of the edge at each second interval in the first direction to extract a second boundary point group including a plurality of boundary points; determine a noise removal condition based on the first boundary point group; remove, from the second boundary point group, a boundary point satisfying the noise removal condition as noise; and calculate a linear equation approximating the second boundary point group from which the noise is removed.Type: ApplicationFiled: February 25, 2020Publication date: September 17, 2020Applicant: Ricoh Company, Ltd.Inventors: AYUMU HASHIMOTO, HAJIME TSUKAHARA, HIROKI SHIRADO, YUUKI NAKADA, TOMOHIKO ONO, TATSUYA OZAKI, HIROSHI KUBO, KIMIHARU YANAGISAWA, YOSHIAKI NAGAO, MASAHIRO ITOH
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Publication number: 20200277495Abstract: A weather-resistant flame-retardant resin composition includes: a polyolefin resin; a mixture of (poly) phosphate compounds, a total content of which is from 10 to 50 parts by mass with respect to 100 parts by mass of the polyolefin resin; 0.1 to 10 parts by mass a non-crosslinked silicone raw rubber having a number-average molecular weight of 10,000 to 1,000,000; and 0.1 to 20 parts by mass of an inorganic UV light shielding agent, and an electric wire and an optical fiber cable whose jacket is formed by the weather-resistant flame-retardant resin.Type: ApplicationFiled: September 21, 2018Publication date: September 3, 2020Inventors: Taro FUJITA, Shinya NISHIKAWA, Nayu YANAGAWA, Yoshiaki NAGAO, Masakazu TAKAMI, Kenta TSUCHIYA
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Publication number: 20200252513Abstract: An inclination detecting device includes processing circuitry. The processing circuitry is configured to detect, in image information that is an image of an object imaged by an imaging device at an imaging position where a background member forms a background, a first boundary between the background member and a shadow of the object at detection positions in at least one of main-scanning and sub-scanning directions on an outline of the object; detect a second boundary between the object and the shadow of the object at detection positions in at least one of the main-scanning and sub-scanning directions on the outline of the object in the image information; detect a boundary group including detection results of the second boundary at the detection positions; and detect an inclination of the object in the image information from detection results of the first boundary, the second boundary, and the boundary group.Type: ApplicationFiled: January 30, 2020Publication date: August 6, 2020Inventors: Yuuki NAKADA, Hajime TSUKAHARA, Hiroki SHIRADO, Ayumu HASHIMOTO, Tomohiko ONO, Tatsuya OZAKI, Hiroshi KUBO, Yoshiaki NAGAO, Kimiharu YANAGISAWA, Masahiro ITOH
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Publication number: 20200244837Abstract: An inclination detecting device includes processing circuitry. The processing circuitry is configured to detect, in image information that is an image of an object imaged by an imaging device at an imaging position where a background member forms a background, a first boundary between the background member and a shadow of the object; detect a second boundary between the object and the shadow of the object in the image information; and detect an inclination of the object in the image information from the first boundary and the second boundary detected by the processing circuitry.Type: ApplicationFiled: January 29, 2020Publication date: July 30, 2020Inventors: Hajime TSUKAHARA, Hiroki SHIRADO, Ayumu HASHIMOTO, Yuuki NAKADA, Tomohiko ONO, Tatsuya OZAKI, Hiroshi KUBO, Yoshiaki NAGAO, Kimiharu YANAGISAWA, Masahiro ITOH
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Publication number: 20200218021Abstract: A slot type optical cable includes: an optical fiber; a slot rod that includes a plurality of ribs forming a groove in which the optical fiber is accommodatable; and a cable jacket that is provided around the slot rod.Type: ApplicationFiled: June 13, 2018Publication date: July 9, 2020Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Keisuke OKADA, Fumiaki SATO, Yoshiaki NAGAO
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Publication number: 20200183111Abstract: An optical fiber cable includes optical fiber ribbons, a slot rod and a cable jacket. The slot rod has slot grooves in which the optical fiber ribbons are housed. The cable jacket covers an outside of the slot rod. The optical fiber ribbons have, in a state in which optical fibers having an outer diameter of 0.22 mm or less are arranged in parallel, connecting portions at which adjacent ones of the optical fibers are connected to one another and non-connecting portions at which adjacent ones of the optical fibers are not connected to one another, which are provided intermittently in a longitudinal direction. A density of core number of the optical fibers included in the optical fiber cable is 4.8 cores/mm2 or more in a cross section of the optical fiber cable.Type: ApplicationFiled: August 8, 2017Publication date: June 11, 2020Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Fumiaki SATO, Taro FUJITA, Nayu YANAGAWA, Yoshiaki NAGAO, Nobuyuki SUZUKI
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Publication number: 20200137262Abstract: A sheet reading apparatus includes a sheet table on which a sheet is placed, a conveyor configured to convey the sheet, a reading guide configured to guide the sheet conveyed by the conveyor, and a reading device configured to read a shadow of the sheet conveyed by the conveyor, for detection of an inclination of the sheet. The sheet reading apparatus further includes a transparent member disposed at a position on a reading line of the reading device. The position on the reading line is withdrawn from the sheet and adjacent to the reading guide.Type: ApplicationFiled: October 16, 2019Publication date: April 30, 2020Inventors: Hiroshi KUBO, Kimiharu YANAGISAWA, Hajime TSUKAHARA, Yoshiaki NAGAO, Masahiro ITOH, Tatsuya OZAKI, Tomohiko ONO, Yuuki NAKADA, Hiroki SHIRADO, Ayumu HASHIMOTO
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Patent number: 10598888Abstract: There is provided an intermittent connection type optical fiber ribbon in which at least a part of a plurality of optical fibers that are arranged to be in parallel come into contact with each other, and between a part or the entirety of the optical fibers, a connection portion at which the adjacent optical fibers are connected to each other with an adhesive resin, and a non-connection portion at which the adjacent optical fibers are not connected to each other with the adhesive resin, are intermittently provided in the longitudinal direction, in which an outer diameter dimension of the optical fiber is equal to or less than 0.22 mm, and an inter-center distance of the adjacent optical fibers is 0.20±0.02 mm, and in which at least a part of the outer periphery of the optical fiber has no adhesive resin attached thereto.Type: GrantFiled: February 17, 2017Date of Patent: March 24, 2020Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Fumiaki Sato, Yoshiaki Nagao, Nobuyuki Suzuki
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Patent number: 10585255Abstract: An intermittent-connection-type optical fiber ribbon includes: a plurality of optical fiber core wires that are disposed in parallel; a connecting resin that is coated on surfaces of the plurality of optical fiber core wires; and slits that are provided intermittently in the connecting resin partially between the optical fiber core wires in a longitudinal direction, and a marking is on the connecting resin.Type: GrantFiled: December 22, 2016Date of Patent: March 10, 2020Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Fumiaki Sato, Keisuke Okada, Yoshiaki Nagao, Nobuyuki Suzuki, Yuuki Shimoda
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Publication number: 20200064550Abstract: An intermittently-coupled type optical fiber ribbon in which a plurality of ribbon type paired optical fibers each of which is integrally formed by bringing two optical fibers into contact with each other are arranged in parallel, and a coupling part in which adjacent ribbon type paired optical fibers are connected to each other and a non-coupling part in which ribbon type paired optical fibers are not connected are intermittently provided in a longitudinal direction, wherein an outer diameter dimension of the optical fiber is 0.22 mm or less, and a center distance of optical fibers adjacent with the coupling part interposed therebetween between the adjacent ribbon type paired optical fibers is 0.28±0.03 mm.Type: ApplicationFiled: November 27, 2017Publication date: February 27, 2020Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Fumiaki SATO, Fumikazu YOSHIZAWA, Yoshiaki NAGAO
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Publication number: 20200041739Abstract: Provided is an optical fiber cable that is easier to be laid and enables higher-density packaging than an existing cable. This optical fiber cable is a slotless type optical fiber cable including: an optical unit formed by collecting and twisting a plurality of optical fibers or ribbons each formed by arranging the plurality of optical fibers; a cable core housing the optical unit; and a cable jacket provided around the cable core, and a tension member made of a fiber body within the cable core.Type: ApplicationFiled: March 19, 2018Publication date: February 6, 2020Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Fumiaki SATO, Yoshiaki NAGAO, Ryoei OKA, Ken TAKAHASHI, Takao HIRAMA
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Patent number: 10530947Abstract: An image reading device includes an image reader movable along an image reading face, a casing to house the image reader, including a restraint holder, and a restraint to be held by the restraint holder of the casing and configured to restrict movement of the image reader. The restraint includes an operation portion to be disposed outside the casing. The operation portion is operated to move the restraint, in the restraint holder, to: a restricting position to restrict movement of the image reader; a first unlock position to cancel restriction of movement of the image reader; and a second unlock position at which movement of the image reader is not restricted. At the first unlock position, movement of the restraint to the restricting position is allowed. From the second unlock position, movement to the restricting position is less smooth than movement from the first unlock position to the restricting position.Type: GrantFiled: February 8, 2019Date of Patent: January 7, 2020Assignee: RICOH COMPANY, LTD.Inventors: Takuji Kawai, Yoshiaki Nagao, Yohei Osanai
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Patent number: 10514517Abstract: Provided is an optical fiber cable whereby macrobend loss can be suppressed even when ribbons are mounted at high density in grooves. An optical fiber cable provided with optical units in which ribbons each having a plurality of optical fiber cores arranged in parallel are collected, a slot rod having a plurality of grooves for accommodating optical units, a tension member on which tension is applied, and a cable jacket for covering the outside of the slot rod. Each of the optical units is accommodated in the corresponding groove in a stranded state, and the occupancy of the optical units calculated from the cross-sectional area of the optical units with respect to the cross-sectional area of the groove is 25% to 65%.Type: GrantFiled: July 22, 2016Date of Patent: December 24, 2019Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Fumiaki Sato, Keisuke Okada, Yoshiaki Nagao, Kenta Tsuchiya, Nobuyuki Suzuki
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Patent number: 10488609Abstract: An intermittent-connection-type optical fiber ribbon in which a plurality of optical fiber core wires are disposed in parallel, and which includes: a connecting part where adjacent optical fiber core wires are connected; and a non-connecting part where adjacent optical fiber core wires are not connected, the connecting parts and the non-connecting parts are provided intermittently in a longitudinal direction, the non-connecting parts are not provided in the longitudinal direction between two the optical fiber core wires, the connecting part is recessed, and in a case where, in the longitudinal direction, a is length of the connecting part, b is length of a part where the non-connecting part between different optical fiber core wires overlap, c is length of the non-connecting part, and p is an interval of the connecting parts, c/a?1.5, b?50 mm, and (c/a)×p?200 mm are set.Type: GrantFiled: January 11, 2017Date of Patent: November 26, 2019Assignee: Sumitomo Electric Industries, Ltd.Inventors: Fumiaki Sato, Kenta Tsuchiya, Keisuke Okada, Yoshiaki Nagao, Nobuyuki Suzuki
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Patent number: 10416403Abstract: An optical fiber cable includes optical fiber ribbons of no less than 12, a slot rod including slot grooves in which the optical fiber ribbons are housed, a tension member, and a cable sheath. The optical fiber ribbons include, at a part of or through all of the optical fiber core wires, in a state where the optical fiber core wires are arranged in parallel, a connecting part where adjacent optical fiber core wires are connected and a non-connecting part where adjacent optical fiber core wires are not connected, which are provided intermittently in a longitudinal direction. A relationship between the number “x” of the optical fiber core wires housed in the optical fiber cable and flexural rigidity “y” (N·mm2) of the optical fiber cable satisfies following Expression 1. y?3e0.Type: GrantFiled: February 8, 2017Date of Patent: September 17, 2019Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Keisuke Okada, Fumiaki Sato, Yoshiaki Nagao, Nobuyuki Suzuki
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Publication number: 20190260892Abstract: An image reading device includes an image reader movable along an image reading face, a casing to house the image reader, including a restraint holder, and a restraint to be held by the restraint holder of the casing and configured to restrict movement of the image reader. The restraint includes an operation portion to be disposed outside the casing. The operation portion is operated to move the restraint, in the restraint holder, to: a restricting position to restrict movement of the image reader; a first unlock position to cancel restriction of movement of the image reader; and a second unlock position at which movement of the image reader is not restricted. At the first unlock position, movement of the restraint to the restricting position is allowed. From the second unlock position, movement to the restricting position is less smooth than movement from the first unlock position to the restricting position.Type: ApplicationFiled: February 8, 2019Publication date: August 22, 2019Applicant: Ricoh Company, Ltd.Inventors: Takuji KAWAI, Yoshiaki Nagao, Yohei Osanai