Patents by Inventor Junichi Tachibana
Junichi Tachibana 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: 20150279402Abstract: A magnetic recording medium includes a base material which has flexibility, a lower coating layer, and a recording layer, in which, in X-ray diffraction peaks, a value of ??50 where a diffraction peak of magnetic atoms which are included in the recording layer is measured by a locking curve method is 5° or more to less than 10°.Type: ApplicationFiled: March 24, 2015Publication date: October 1, 2015Inventors: Noboru SEKIGUCHI, Junichi TACHIBANA, Tetsuo ENDO, Tomoe OZAKI, Hikaru TERUI
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Publication number: 20150194174Abstract: There is provided a magnetic recording medium including a surface having a longitudinal direction and a lateral direction. An arithmetic average roughness Ra, a ratio PSDMD,short/PSDTD,short, and a ratio PSDMD,long/PSDTD,long on the surface satisfy Ra?3.0 nm, PSDMD,short/PSDTD,short?0.65, and 1.3?PSDMD,long/PSDTD,long?2.3, in which PSDMD,short is an average value of PSD values in a range from 0.15 ?m to 0.4 ?m in the longitudinal direction of the surface, PSDTD,short is an average value of PSD values in a range from 0.15 ?m to 0.4 ?m in the lateral direction of the surface, PSDMD,long is an average value of PSD values in a range from 0.4 ?m to 5.0 ?m in the longitudinal direction of the surface, and PSDTD,long is an average value of PSD values in a range from 0.4 ?m to 5.0 ?m in the lateral direction of the surface.Type: ApplicationFiled: December 12, 2014Publication date: July 9, 2015Inventors: Noboru SEKIGUCHI, Tomoe OZAKI, Junichi TACHIBANA
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Publication number: 20150107272Abstract: A temperature adjustment device includes: at least one first Peltier unit having a heat absorption surface and a heat release surface; at least one second Peltier unit having a heat absorption surface and a heat release surface; a controller which controls the drive currents of the first Peltier unit and the second Peltier unit; a primary circulation mechanism which circulates a primary refrigerant between a first heat release block and a heat absorption block; at least one second heat release block which has a flow path through which a secondary refrigerant flows, receives heat from the heat release surface of the second Peltier unit and transmits the heat to the secondary refrigerant; a heat exchanger which receives the secondary refrigerant discharged from the second heat release block and releases heat; and a secondary circulation mechanism which circulates the secondary refrigerant between the second heat release block and the heat exchanger.Type: ApplicationFiled: April 5, 2013Publication date: April 23, 2015Applicant: KEENUSDESIGN CORPORATIONInventors: Junichi Tachibana, Shinichiro Iwasaki
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Publication number: 20140363700Abstract: A magnetic recording medium includes a substrate, a seed layer, an under layer, and a perpendicular recording layer having a granular structure. (Ms·?·?1.5(1?Rs)0.33), Ms, and ? satisfy (Ms·?·?1.5(1?Rs)0.33)?0.1 [?·emu·(mm)?1.5], Ms?450 [emu/cc], and ??1.2. In the above formulas, Ms indicates a saturated magnetization amount, ? indicates the gradient of a M-H loop around a coercive force Hc, ? indicates the thickness of the perpendicular recording layer, and Rs indicates a squareness ratio.Type: ApplicationFiled: May 29, 2014Publication date: December 11, 2014Applicant: Sony CorporationInventors: Junichi Tachibana, Noboru Sekiguchi, Tomoe Ozaki
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Publication number: 20140342189Abstract: There is provided a magnetic recording medium including a base; a seed layer; a foundation layer; and a recording layer, the seed layer being disposed between the base and the foundation layer, having an amorphous state, including an alloy containing Ti, Cr and O, a percentage of Ti being 30 atomic % to 100 atomic % based on a total amount of Ti and Cr contained in the seed layer, and a percentage of O being 15 atomic % or less based on a total amount of Ti, Cr and O contained in the seed layer. Also, a production method thereof is provided.Type: ApplicationFiled: May 9, 2014Publication date: November 20, 2014Applicant: Sony CorporationInventors: Junichi Tachibana, Jota Ito, Tomoe Ozaki, Ryoichi Hiratsuka, Noboru Sekiguchi, Tetsuo Endo
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Patent number: 7241519Abstract: Provided is a magnetic recording medium capable of achieving higher density recording. The magnetic recording medium comprises a magnetic layer formed on a non-magnetic base through vacuum oblique evaporation. The magnetic layer includes a plurality of columns in which 3 to 7 ferromagnetic particles with an average diameter of 5 to 10 nm are arranged in a line, and non-magnetic particles are disposed between columns so as to separate the columns from one another. A value Y/X defined as a ratio of an average value Y of a distance between the centers of adjacent columns in a film in-plane direction to an average value X of a distance between the centers of adjacent columns in a film thickness direction is preferably 0.5 or more.Type: GrantFiled: July 6, 2004Date of Patent: July 10, 2007Assignee: Sony CorporationInventors: Junichi Tachibana, Yuichi Arisaka, Hiroshi Mizuno, Takuya Ito
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Patent number: 7182208Abstract: A rack for holding on its inside multiple electronic devices, which have fans for drawing outside air to inside the devices and exhaust ports for discharging air, including two pairs of support columns, the columns of each pair being placed parallel to one another in the front and the back at a pre-determined distance apart from one another, and air ducts for directing exhaust air from the above-mentioned exhaust ports of these electronic devices positioned between at least one pair of the two pairs of support columns, having a structure wherein there are side covers that cover the side surfaces, and the air ducts are installed between the pair of support columns between the side covers and the inside of the rack and are substantially formed from multiple panels adjacent to one another inside of the rack.Type: GrantFiled: December 19, 2003Date of Patent: February 27, 2007Assignee: Agilent Technologies, Inc.Inventor: Junichi Tachibana
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Publication number: 20050008899Abstract: Provided is a magnetic recording medium capable of achieving higher density recording. The magnetic recording medium comprises a magnetic layer formed on a non-magnetic base through vacuum oblique evaporation. The magnetic layer includes a plurality of columns in which 3 to 7 ferromagnetic particles with an average diameter of 5 to 10 nm are arranged in a line, and non-magnetic particles are disposed between columns so as to separate the columns from one another. A value Y/X defined as a ratio of an average value Y of a distance between the centers of adjacent columns in a film in-plane direction to an average value X of a distance between the centers of adjacent columns in a film thickness direction is preferably 0.5 or more.Type: ApplicationFiled: July 6, 2004Publication date: January 13, 2005Inventors: Junichi Tachibana, Yuichi Arisaka, Hiroshi Mizuno, Takuya Ito
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Publication number: 20040182799Abstract: A rack for holding on its inside multiple electronic devices, which have fans for drawing outside air to inside the devices and exhaust ports for discharging air, including two pairs of support columns, the columns of each pair being placed parallel to one another in the front and the back at a pre-determined distance apart from one another, and air ducts for directing exhaust air from the above-mentioned exhaust ports of these electronic devices positioned between at least one pair of the two pairs of support columns, having a structure wherein there are side covers that cover the side surfaces, and the air ducts are installed between the pair of support columns between the side covers and the inside of the rack and are substantially formed from multiple panels adjacent to one another inside of the rack.Type: ApplicationFiled: December 19, 2003Publication date: September 23, 2004Applicant: AGILENT TECHNOLOGIES, INC.Inventor: Junichi Tachibana
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Patent number: 6773745Abstract: A method of producing a magnetic recording medium comprising the step of forming a magnetic layer on a non-magnetic base film running at a constant speed by continuous oblique evaporation depositing metal vapor of volatilized metal incident obliquely to a surface of the non-magnetic base film, wherein the evaporation is conducted at a film forming rate, defined as an average deposition rate of the magnetic layer at a part of the non-magnetic base film exposed to the incident metal vapor, of not less than a predetermined rate to form an internal microstructure of the magnetic layer comprising columns each having a diameter of not more than about 15 nm constituted by magnetic particles having a size of not more than about 10 nm connected in chains in a direction substantially perpendicular to the magnetic layer and non-magnetic particles packed between the columns and separating the columns from each other, and a magnetic recording medium produced by the above method.Type: GrantFiled: August 14, 2002Date of Patent: August 10, 2004Assignee: Sony CorporationInventors: Yuichi Arisaka, Junichi Tachibana, Takuya Ito, Yoh Iwasaki
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Publication number: 20030054202Abstract: A method of producing a magnetic recording medium comprising the step of forming a magnetic layer on a non-magnetic base film running at a constant speed by continuous oblique evaporation depositing metal vapor of volatilized metal incident obliquely to a surface of the non-magnetic base film, wherein the evaporation is conducted at a film forming rate, defined as an average deposition rate of the magnetic layer at a part of the non-magnetic base film exposed to the incident metal vapor, of not less than a predetermined rate to form an internal microstructure of the magnetic layer comprising columns each having a diameter of not more than about 15 nm constituted by magnetic particles having a size of not more than about 10 nm connected in chains in a direction substantially perpendicular to the magnetic layer and non-magnetic particles packed between the columns and separating the columns from each other, and a magnetic recording medium produced by the above method.Type: ApplicationFiled: August 14, 2002Publication date: March 20, 2003Inventors: Yuichi Arisaka, Junichi Tachibana, Takuya Ito, Yoh Iwasaki
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Patent number: 5908711Abstract: In a magnetic recording medium having a magnetic thin film formed on a nonmagnetic base film by vacuum evaporation, a noise can be reduced and hence a satisfactory error rate for the digital recording can be secured. A magnetic recording medium according to the present invention includes a nonmagnetic base film, and a magnetic layer formed on the nonmagnetic base film by oblique incident evaporation. A mean particle size a of a column grown on the nonmagnetic base film is set within the range of 10 nm.ltoreq.a.ltoreq.50 nm. A value .sigma./a is set within the range of .sigma./a.ltoreq.0.4 where .sigma. is a dispersion value of a particle-size distribution of the column.Type: GrantFiled: June 17, 1997Date of Patent: June 1, 1999Assignee: Sony CorporationInventor: Junichi Tachibana