Patents by Inventor Yuichiro Sano
Yuichiro Sano 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: 10468071Abstract: Disclosed herein is a magnetic storage device that comprises a housing defining an interior cavity. The magnetic storage device also comprises at least one magnetic disk in the interior cavity of the housing. The magnetic storage device further comprises at least one read-write head in the interior cavity and configured to read data from and write data to the magnetic disk. The read-write head comprises a heat-assisted magnetic storage (HAMR) head. The magnetic storage device additionally comprises a gas, comprising oxygen and helium, sealed in the interior cavity of the housing. A percent concentration of oxygen in the gas is greater than or equal to 3%. A pressure of the gas is between 10% and 70%, inclusive, of atmospheric pressure. A relative humidity within the interior cavity is less than 5%, inclusive. A percent concentration of helium in the gas is less than or equal to 90%.Type: GrantFiled: June 1, 2018Date of Patent: November 5, 2019Assignee: WESTERN DIGITAL TECHNOLOGIES, INC.Inventors: Kenji Tasaka, Yuichiro Sano, Ehsan Rismaniyazdi, Barry Stipe, Nobuyuki Okunaga, Erhard Schreck, Oscar Ruiz, Qing Dai, Sripathi V. Canchi, Weidong Huang, Yong Hu, Kenji Kuroki
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Patent number: 9053725Abstract: A hard disk drive electronic component processes a signal from a piezoelectric actuator to identify where on a disk the slider encounters a disk defect. The signal received from the piezoelectric actuator may be based on the mechanical propagation, through the suspension to the piezoelectric actuator, of an effect of slider contact with the protrusion. Further, an actuator may be commanded to systematically move the head slider across the writeable portion of the disk to map all the protrusions on the writeable portion of the disk.Type: GrantFiled: August 25, 2014Date of Patent: June 9, 2015Assignee: HGST Netherlands B.V.Inventors: Yuichiro Sano, Junguo Xu, Yuka Morimoto
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Patent number: 8873191Abstract: An embedded contact sensor (ECS) element for fly-height control and touchdown detection. An embedded contact sensor (ECS) element with a resistance that changes with a temperature change, which senses a clearance change between a head slider and a disk of a disk drive. A resistance measurement section, within said head IC, that determines a value of direct current resistance (DCR) of said ECS element, wherein said value of DCR changes with a temperature change, wherein said temperature change is caused by an air bearing cooling and frictional induced heating at a head disk interface. A resistance slope to fly-height conversion section that dynamically determines a target fly-height value for said head slider over said disk based on changes in said value of DCR.Type: GrantFiled: March 14, 2013Date of Patent: October 28, 2014Assignee: HGST Netherlands B.V.Inventors: Jianhua Li, Kenichi Kuramoto, Toshiya Shiramatsu, Yuichi Aoki, Masaru Furukawa, Yuichiro Sano
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Publication number: 20140268386Abstract: An embedded contact sensor (ECS) element for fly-height control and touchdown detection. An embedded contact sensor (ECS) element with a resistance that changes with a temperature change, which senses a clearance change between a head slider and a disk of a disk drive. A resistance measurement section, within said head IC, that determines a value of direct current resistance (DCR) of said ECS element, wherein said value of DCR changes with a temperature change, wherein said temperature change is caused by an air bearing cooling and frictional induced heating at a head disk interface. A resistance slope to fly-height conversion section that dynamically determines a target fly-height value for said head slider over said disk based on changes in said value of DCR.Type: ApplicationFiled: March 14, 2013Publication date: September 18, 2014Applicant: HGST Netherlands B.V.Inventors: Jianhua Li, Kenichi Kuramoto, Toshiya Shiramatsu, Yuichi Aoki, Masaru Furukawa, Yuichiro Sano
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Patent number: 8173336Abstract: The purpose of the present invention is to provide a method for transferring a pattern of a circuit pattern precursor formed of electroconductive particles containing no resin component onto an objective substrate with high transfer efficiency while retaining a pattern shape. A method of transferring the circuit pattern precursor formed from an conductive particle dispersed solution on a dielectric thin film body includes the steps of: temporarily removing a liquid film remaining around the circuit pattern precursor right after a development step; subsequently re-electrifying the electroconductive particle pattern by supplying a solvent again to the circuit pattern precursor; and then electrostatically transferring the pattern onto the objective substrate through electrophoresis in the solvent.Type: GrantFiled: July 27, 2007Date of Patent: May 8, 2012Assignee: Hitachi, Ltd.Inventors: Yuichiro Sano, Toru Miyasaka
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Patent number: 8039182Abstract: An object is to improve the adhesion strength between a circuit pattern and its substrate without increasing the resistance value of the circuit pattern in preparation of a circuit pattern holding substrate. A circuit pattern formation device 100 forms, after forming a precursor circuit-pattern 12 in the surface of a dielectric thin film body 4, a circuit pattern 14 onto a target substrate 23 from the dielectric thin film body. After forming an electrostatic latent image 2 in the upper surface of the dielectric thin film body, the electrostatic latent image is exposed using an exposure unit 3 to prepare a pattern. A development apparatus 7 supplies a conductive particle dispersion solution 6 to this pattern to form a precursor circuit-pattern. By energizing the circuit pattern holding substrate 8, in which an adhesive layer 22 is formed, the precursor circuit-pattern is temporarily transferred to the circuit pattern holding substrate.Type: GrantFiled: July 3, 2007Date of Patent: October 18, 2011Assignee: Hitachi, Ltd.Inventors: Yuichiro Sano, Toru Miyasaka
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Patent number: 7979005Abstract: An electrically conductive pattern forming apparatus has process disposition which reduces contamination of a pattern or inside of the apparatus due to backflow and leakage of a liquid material such as a developing agent or a cleaning liquid. A developing device and a cleaning device in the electrically conductive pattern forming apparatus using an electrophotographic method are disposed in a lower region about the center of a photoreceptor, a solvent removing process is disposed in a region in which the photoreceptor rotates upward, and a transfer liquid applying process and an electrostatic transfer process are disposed above the center of the photoreceptor and in a region in which the photoreceptor rotates downward.Type: GrantFiled: June 30, 2008Date of Patent: July 12, 2011Assignee: Hitachi, Ltd.Inventors: Yuichiro Sano, Toru Miyasaka
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Publication number: 20100031883Abstract: A conductive pattern forming apparatus using electrostatic force, by which high productivity, application to a large area and pattern change availability are achieved, without limiting a substrate nor increasing extra steps of plating and the like, with easy steps, lower cost, shorter manufacturing time and less environmental load. The conductive pattern forming apparatus is provided with an electrostatic latent image forming means for forming an electrostatic pattern on a dielectric thin film surface, and a developing means for forming the conductive pattern by development by supplying a conductive particle dispersed solution to the electrostatic latent image and bringing the solution into contact with the electrostatic latent image. The conductive particle dispersed solution is provided by dispersing conductive particles, which have ionic organic molecules adsorbed on the surface and a particle diameter of 100 nm or less, in a non-polar solvent.Type: ApplicationFiled: January 25, 2006Publication date: February 11, 2010Inventors: Yuichiro Sano, Toru Miyasaka
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Publication number: 20090268183Abstract: Apparatus for forming a conductive pattern capable of stably forming a wiring pattern of a desired thickness by providing at least one thickness detection means for detecting the thickness of a formed pattern and capable of adjusting at least one of parameters such as a developing bias voltage or a concentration of a developer that contributes to the thickness of the pattern based on the information obtained from the thickness detection means.Type: ApplicationFiled: April 28, 2009Publication date: October 29, 2009Inventors: Yuichiro SANO, Toru MIYASAKA, Shigeo NAKAMURA
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Patent number: 7608205Abstract: Microscopic particle decentralized solution having microscopic particles with different diameters are decentralized, wherein: the microscopic particle decentralized solution has two peaks in a granularity distribution, at a large diameter and a small diameter; and microscopic particle mixtures satisfying the following relationships are decentralized in the solution; R>r and n>3.84×(R/r)3×N, where R is a large particle diameter, r is a small particle diameter, N is the number of large particles, and n is the number of small particle.Type: GrantFiled: September 29, 2006Date of Patent: October 27, 2009Assignee: Hitachi, Ltd.Inventors: Yuichiro Sano, Toru Miyasaka
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Patent number: 7503645Abstract: A droplet generator comprising a first unit having an elongate liquid chamber one end thereof is open and at least one raw of orifices disposed in a line oppositely to the open end in the longitudinal direction of the first unit, a second unit having an elongate diaphragm provided on the bottom of the second unit and a plurality of vibrators provided within the diaphragm area, a vibrating apparatus provided on the top of the vibrators, and a stationary section to fix the vibrating apparatus. The diaphragm of the second unit is provided closely and oppositely to the open end of the liquid chamber of the first unit.Type: GrantFiled: September 27, 2006Date of Patent: March 17, 2009Assignee: Hitachi, Ltd.Inventors: Toru Miyasaka, Yuichiro Sano, Mamoru Okano, Tomohiro Inoue
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Publication number: 20080267680Abstract: An electrically conductive pattern forming apparatus has process disposition which reduces contamination of a pattern or inside of the apparatus due to backflow and leakage of a liquid material such as a developing agent or a cleaning liquid. A developing device and a cleaning device in the electrically conductive pattern forming apparatus using an electrophotographic method are disposed in a lower region about the center of a photoreceptor, a solvent removing process is disposed in a region in which the photoreceptor rotates upward, and a transfer liquid applying process and an electrostatic transfer process are disposed above the center of the photoreceptor and in a region in which the photoreceptor rotates downward.Type: ApplicationFiled: June 30, 2008Publication date: October 30, 2008Inventors: Yuichiro Sano, Toru Miyasaka
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Publication number: 20080044749Abstract: An object is to improve the adhesion strength between a circuit pattern and its substrate without increasing the resistance value of the circuit pattern in preparation of a circuit pattern holding substrate. A circuit pattern formation device 100 forms, after forming a precursor circuit-pattern 12 in the surface of a dielectric thin film body 4, a circuit pattern 14 onto a target substrate 23 from the dielectric thin film body. After forming an electrostatic latent image 2 in the upper surface of the dielectric thin film body, the electrostatic latent image is exposed using an exposure unit 3 to prepare a pattern. A development apparatus 7 supplies a conductive particle dispersion solution 6 to this pattern to form a precursor circuit-pattern. By energizing the circuit pattern holding substrate 8, in which an adhesive layer 22 is formed, the precursor circuit-pattern is temporarily transferred to the circuit pattern holding substrate.Type: ApplicationFiled: July 3, 2007Publication date: February 21, 2008Inventors: Yuichiro Sano, Toru Miyasaka
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Publication number: 20080026307Abstract: The purpose of the present invention is to provide a method for transferring a pattern of a circuit pattern precursor formed of electroconductive particles containing no resin component onto an objective substrate with high transfer efficiency while retaining a pattern shape. A method of transferring the circuit pattern precursor formed from an conductive particle dispersed solution on a dielectric thin film body includes the steps of: temporarily removing a liquid film remaining around the circuit pattern precursor right after a development step; subsequently re-electrifying the electroconductive particle pattern by supplying a solvent again to the circuit pattern precursor; and then electrostatically transferring the pattern onto the objective substrate through electrophoresis in the solvent.Type: ApplicationFiled: July 27, 2007Publication date: January 31, 2008Inventors: YUICHIRO SANO, Toru Miyasaka
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Publication number: 20070159157Abstract: Microscopic particle decentralized solution having microscopic particles with different diameters are decentralized, wherein: the microscopic particle decentralized solution has two peaks in a granularity distribution, at a large diameter and a small diameter; and microscopic particle mixtures satisfying the following relationships are decentralized in the solution; R>r and n>3.84×(R/r)3×N, where R is a large particle diameter, r is a small particle diameter, N is the number of large particles, and n is the number of small particle.Type: ApplicationFiled: September 29, 2006Publication date: July 12, 2007Inventors: Yuichiro Sano, Toru Miyasaka
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Publication number: 20070146441Abstract: A droplet generator comprising a first unit having an elongate liquid chamber one end thereof is open and at least one raw of orifices disposed in a line oppositely to the open end in the longitudinal direction of the first unit, a second unit having an elongate diaphragm provided on the bottom of the second unit and a plurality of vibrators provided within the diaphragm area, a vibrating apparatus provided on the top of the vibrators, and a stationary section to fix the vibrating apparatus; wherein the diaphragm of the second unit is provided closely and oppositely to the open end of the liquid chamber of the first unit.Type: ApplicationFiled: September 27, 2006Publication date: June 28, 2007Inventors: Toru Miyasaka, Yuichiro Sano, Mamoru Okano, Tomohiro Inoue
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Publication number: 20060121342Abstract: The present invention proposes a secondary battery structure with a solid electrolyte, which can secure high reliability at a low cost and realize high energy density and high output, and also proposes a method for producing the secondary battery structure simply at a low cost while realizing reduced size and weight. The present invention provides a secondary battery structure of planar, inter digital shape as the one with a solid electrolyte, capable of realizing reduced cost, high safety, high energy density and high output, wherein anode and cathode collectors of pectinate shape are provided to face each other on a flat substrate by patterning, anode and cathode material particles are patterned on the respective anode and cathode collectors by electrophotography in the vertical direction to the collector surface to form the vertical electrodes, and the gap between the adjacent anode and cathode is filled with the solid electrolyte.Type: ApplicationFiled: November 16, 2005Publication date: June 8, 2006Applicant: Hitachi, Ltd.Inventors: Yuichiro Sano, Toru Miyasaka, Shin Nishimura