Patents by Inventor Ryo TASHIRO
Ryo TASHIRO 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: 11472468Abstract: Provided is a power steering apparatus capable of reducing a maximumly generated stress on an output pulley. An output pulley of a power steering apparatus includes a fastening target portion around a screw insertion hole of a hub portion. When a boundary portion between the hub portion and a winding and hanging portion is defined to be a portion where a minor angle, among relative angles formed between a tangential line of an inner surface of the output pulley and a rotational axis of a nut in an axial cross section of the output pulley that passes through the rotational axis of the nut, gradually reduces from a nut-rotational-axis side toward a radially outer side to then reach 45 degrees, the fastening target portion is a region that is located on an inner side in a radial direction with respect to the boundary portion and overlaps a head portion of a screw in a radial direction of the screw.Type: GrantFiled: December 11, 2017Date of Patent: October 18, 2022Assignee: HITACHI ASTEMO, LTD.Inventors: Ryo Tashiro, Osamu Yoshida
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Patent number: 10865862Abstract: In some examples, a ball nut includes a first end and an outer cylindrical surface having a first diameter. A pulley may be mounted on the first end of the ball nut. The pulley may include an inner cylindrical surface having a second diameter larger than the first diameter of the ball nut and sized to engage with the outer cylindrical surface in a press fit. Furthermore, a circumferential groove may be formed in a portion of the first end of the ball nut extending beyond the pulley when the pulley is mounted on the first end of the ball nut. A retaining ring is disposed in the circumferential groove to prevent removal of the pulley from the first end of the ball nut. Furthermore, a portion of the ball nut may engage with a portion the pulley to prevent relative rotation between the pulley and the ball nut.Type: GrantFiled: August 27, 2018Date of Patent: December 15, 2020Assignee: HITACHI AUTOMOTIVE SYSTEMS AMERICAS, INC.Inventors: Charles Durbin, Satoru Muto, Bikal Adhikari, Ryo Tashiro
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Publication number: 20200063839Abstract: In some examples, a ball nut includes a first end and an outer cylindrical surface having a first diameter. A pulley may be mounted on the first end of the ball nut. The pulley may include an inner cylindrical surface having a second diameter larger than the first diameter of the ball nut and sized to engage with the outer cylindrical surface in a press fit. Furthermore, a circumferential groove may be formed in a portion of the first end of the ball nut extending beyond the pulley when the pulley is mounted on the first end of the ball nut. A retaining ring is disposed in the circumferential groove to prevent removal of the pulley from the first end of the ball nut. Furthermore, a portion of the ball nut may engage with a portion the pulley to prevent relative rotation between the pulley and the ball nut.Type: ApplicationFiled: August 27, 2018Publication date: February 27, 2020Inventors: Charles DURBIN, Satoru MUTO, Bikal ADHIKARI, Ryo TASHIRO
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Publication number: 20190351938Abstract: Provided is a power steering apparatus capable of reducing a maximumly generated stress on an output pulley. An output pulley of a power steering apparatus includes a fastening target portion around a screw insertion hole of a hub portion. When a boundary portion between the hub portion and a winding and hanging portion is defined to be a portion where a minor angle, among relative angles formed between a tangential line of an inner surface of the output pulley and a rotational axis of a nut in an axial cross section of the output pulley that passes through the rotational axis of the nut, gradually reduces from a nut-rotational-axis side toward a radially outer side to then reach 45 degrees, the fastening target portion is a region that is located on an inner side in a radial direction with respect to the boundary portion and overlaps a head portion of a screw in a radial direction of the screw.Type: ApplicationFiled: December 11, 2017Publication date: November 21, 2019Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Ryo TASHIRO, Osamu YOSHIDA
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Patent number: 10449780Abstract: A printer includes a liquid discharge head and a processor. The liquid discharge head includes a plurality of nozzles. The plurality of nozzles include a line of first nozzles to discharge first liquid and a line of second nozzles to discharge second liquid. The processor is configured to change a print speed in a print mode in which a preceding image is formed with at least the first liquid and a subsequent image to be superimposed on the preceding image is formed with the second liquid, in accordance with an amount of liquid applied to a recording medium to form the preceding image.Type: GrantFiled: March 9, 2018Date of Patent: October 22, 2019Assignee: RICOH COMPANY, LTD.Inventors: Ryo Tashiro, Masahiro Kido
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Patent number: 10399329Abstract: A liquid discharging unit includes a first color nozzle group that includes nozzle arrays each in which nozzle holes for discharging liquids of process colors are arranged in a sub scanning direction perpendicular to a main scanning direction; a second color nozzle group that is provided on upstream side in the sub scanning direction with respect to the first color nozzle group and includes nozzle arrays each in which nozzle holes for discharging liquids of process colors are arranged in the sub scanning direction; and at least one auxiliary nozzle group that is provided between the first color nozzle group and the second color nozzle group and includes nozzle arrays each in which holes for discharging liquids of colors different from the process colors are arranged in the sub scanning direction. The nozzle groups are respectively arranged to be shifted from each other in the main scanning direction.Type: GrantFiled: October 31, 2018Date of Patent: September 3, 2019Assignee: Ricoh Company, Ltd.Inventors: Ryo Tashiro, Kenichiroh Hashimoto, Takayuki Ito, Kimito Abe
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Publication number: 20190061339Abstract: A liquid discharging unit includes a first color nozzle group that includes nozzle arrays each in which nozzle holes for discharging liquids of process colors are arranged in a sub scanning direction perpendicular to a main scanning direction; a second color nozzle group that is provided on upstream side in the sub scanning direction with respect to the first color nozzle group and includes nozzle arrays each in which nozzle holes for discharging liquids of process colors are arranged in the sub scanning direction; and at least one auxiliary nozzle group that is provided between the first color nozzle group and the second color nozzle group and includes nozzle arrays each in which holes for discharging liquids of colors different from the process colors are arranged in the sub scanning direction. The nozzle groups are respectively arranged to be shifted from each other in the main scanning direction.Type: ApplicationFiled: October 31, 2018Publication date: February 28, 2019Inventors: Ryo TASHIRO, Kenichiroh HASHIMOTO, Takayuki ITO, Kimito ABE
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Patent number: 10150286Abstract: A liquid discharging unit includes a first color nozzle group that includes nozzle arrays each in which nozzle holes for discharging liquids of process colors are arranged in a sub scanning direction perpendicular to a main scanning direction; a second color nozzle group that is provided on upstream side in the sub scanning direction with respect to the first color nozzle group and includes nozzle arrays each in which nozzle holes for discharging liquids of process colors are arranged in the sub scanning direction; and at least one auxiliary nozzle group that is provided between the first color nozzle group and the second color nozzle group and includes nozzle arrays each in which holes for discharging liquids of colors different from the process colors are arranged in the sub scanning direction, wherein the nozzle groups are respectively arranged to be shifted from each other in the main scanning direction.Type: GrantFiled: December 6, 2016Date of Patent: December 11, 2018Assignee: Ricoh Company, Ltd.Inventors: Ryo Tashiro, Kenichiroh Hashimoto, Takayuki Ito, Kimito Abe
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Publication number: 20180257388Abstract: A printer includes a liquid discharge head and a processor. The liquid discharge head includes a plurality of nozzles. The plurality of nozzles include a line of first nozzles to discharge first liquid and a line of second nozzles to discharge second liquid. The processor is configured to change a print speed in a print mode in which a preceding image is formed with at least the first liquid and a subsequent image to be superimposed on the preceding image is formed with the second liquid, in accordance with an amount of liquid applied to a recording medium to form the preceding image.Type: ApplicationFiled: March 9, 2018Publication date: September 13, 2018Inventors: Ryo TASHIRO, Masahiro Kido
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Publication number: 20170157921Abstract: A liquid discharging unit includes a first color nozzle group that includes nozzle arrays each in which nozzle holes for discharging liquids of process colors are arranged in a sub scanning direction perpendicular to a main scanning direction; a second color nozzle group that is provided on upstream side in the sub scanning direction with respect to the first color nozzle group and includes nozzle arrays each in which nozzle holes for discharging liquids of process colors are arranged in the sub scanning direction; and at least one auxiliary nozzle group that is provided between the first color nozzle group and the second color nozzle group and includes nozzle arrays each in which holes for discharging liquids of colors different from the process colors are arranged in the sub scanning direction, wherein the nozzle groups are respectively arranged to be shifted from each other in the main scanning direction.Type: ApplicationFiled: December 6, 2016Publication date: June 8, 2017Inventors: Ryo TASHIRO, Kenichiroh HASHIMOTO, Takayuki ITO, Kimito ABE
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Patent number: 9533502Abstract: An electro-mechanical transducer element is disclosed. The electro-mechanical transducer element includes a first electrode formed on a substrate; an electro-mechanical transducer film formed on at least a part of the first electrode; and a second electrode formed on at least a part of the electro-mechanical transducer film. In at least one cross section of the electro-mechanical transducer film, a film thickness distribution shape is convex to the second electrode side.Type: GrantFiled: August 13, 2013Date of Patent: January 3, 2017Assignee: RICOH COMPANY, LTD.Inventors: Osamu Machida, Akira Shimofuku, Ryo Tashiro, Atsushi Takeuchi
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Patent number: 9202717Abstract: A method of making a liquid discharge head which includes a nozzle to discharge liquid, a pressure chamber communicating with the nozzle, a pressure chamber substrate to form surfaces of the pressure chamber, and a piezoelectric actuator to apply pressure to liquid in the pressure chamber having a lower electrode, a ferroelectric film, and an upper electrode, includes a silicon wafer supplying process, a position adjustment process, a surface treatment process to reform a surface of the lower electrode, a liquid applying process to apply ferroelectric precursor on the lower electrode by an inkjet method, a heating process to heat the ferroelectric precursor film, and a cooling process. A series of processes from the position adjustment process to the cooling process is iterated to form a ferroelectric film having a predetermined thickness. The series of processes is performed with certain waiting times inserted between key processes.Type: GrantFiled: December 27, 2012Date of Patent: December 1, 2015Assignee: RICOH COMPANY, LTD.Inventors: Atsushi Takeuchi, Osamu Machida, Akira Shimofuku, Xianfeng Chen, Ryo Tashiro
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Patent number: 8960866Abstract: Disclosed is an electromechanical transducer element including a first electrode disposed on a substrate; an electromechanical transducer film disposed on a first portion of the first electrode; and a second electrode disposed on a second portion of the electromechanical transducer film, wherein an actuator portion formed by laminating the substrate, the first electrode, the electromechanical transducer film, and the second electrode has a stiffness such that, in a cross section of the actuator portion, the stiffness gradually increases from an end portion of the actuator portion to a center portion of the actuator portion.Type: GrantFiled: January 9, 2013Date of Patent: February 24, 2015Assignee: Ricoh Company, Ltd.Inventors: Osamu Machida, Yoshikazu Akiyama, Ryo Tashiro, Akira Shimofuku, Eiichi Ohta, Kenichi Ogata
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Patent number: 8911063Abstract: A thin film forming apparatus which automatically forms, on an electrode layer formed on a substrate, a functional thin film which is crystallized from a precursor layer is disclosed, including a water-repellant film forming unit which forms, on a region other than a region on which is to be formed the functional thin film on the electrode layer, a water-repellant film which includes a self-assembled monolayer; an inkjet coating unit which coats, on the region on which is to be formed the functional thin film on the electrode layer, the precursor layer by an inkjet method; and a controller which controls, to within a predetermined time, a time from forming the water-repellant film with the water-repellant film forming unit to coating the precursor layer with the inkjet coating unit.Type: GrantFiled: January 28, 2013Date of Patent: December 16, 2014Assignee: Ricoh Company, Ltd.Inventors: Yasuhiro Watanabe, Osamu Machida, Akira Shimofuku, Ryo Tashiro, Atsushi Takeuchi
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Patent number: 8770725Abstract: Disclosed is a method of manufacturing an electromechanical transducer element including a first process of hydrophobizing a first area of an electrode by forming a self-assembled monolayer film; a second process of applying a sol-gel solution onto a predetermined second area of the electrode so as to produce a complex oxide; a third process of producing the complex oxide by calcining the electrode; a fourth process of acid-washing the electrode on which the complex oxide has been produced; a fifth process of hydrophobizing the first area of the acid-washed electrode by forming the self-assembled monolayer film; a sixth process of applying the sol-gel solution onto the predetermined second area; and a seventh process of producing the complex oxide by calcining the electrode.Type: GrantFiled: September 12, 2012Date of Patent: July 8, 2014Assignee: Ricoh Company, Ltd.Inventors: Yasuhiro Watanabe, Osamu Machida, Akira Shimofuku, Ryo Tashiro
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Publication number: 20140049582Abstract: An electro-mechanical transducer element is disclosed. The electro-mechanical transducer element includes a first electrode formed on a substrate; an electro-mechanical transducer film formed on at least a part of the first electrode; and a second electrode formed on at least a part of the electro-mechanical transducer film. In at least one cross section of the electro-mechanical transducer film, a film thickness distribution shape is convex to the second electrode side.Type: ApplicationFiled: August 13, 2013Publication date: February 20, 2014Applicant: RICOH COMPANY, LTD.Inventors: Osamu Machida, Akira Shimofuku, Ryo Tashiro, Atsushi Takeuchi
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Publication number: 20130194350Abstract: A thin film forming apparatus which automatically forms, on an electrode layer formed on a substrate, a functional thin film which is crystallized from a precursor layer is disclosed, including a water-repellant film forming unit which forms, on a region other than a region on which is to be formed the functional thin film on the electrode layer, a water-repellant film which includes a self-assembled monolayer; an inkjet coating unit which coats, on the region on which is to be formed the functional thin film on the electrode layer, the precursor layer by an inkjet method; and a controller which controls, to within a predetermined time, a time from forming the water-repellant film with the water-repellant film forming unit to coating the precursor layer with the inkjet coating unit.Type: ApplicationFiled: January 28, 2013Publication date: August 1, 2013Applicant: RICOH COMPANY, LTD.Inventors: Yasuhiro Watanabe, Osamu Machida, Akira Shimofuku, Ryo Tashiro, Atsushi Takeuchi
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Publication number: 20130176364Abstract: Disclosed is an electromechanical transducer element including a first electrode disposed on a substrate; an electromechanical transducer film disposed on a first portion of the first electrode; and a second electrode disposed on a second portion of the electromechanical transducer film, wherein an actuator portion formed by laminating the substrate, the first electrode, the electromechanical transducer film, and the second electrode has a stiffness such that, in a cross section of the actuator portion, the stiffness gradually increases from an end portion of the actuator portion to a center portion of the actuator portion.Type: ApplicationFiled: January 9, 2013Publication date: July 11, 2013Applicant: RICOH COMPANY, LTD.Inventors: Osamu Machida, Yoshikazu Akiyama, Ryo Tashiro, Akira Shimofuku, Eiichi Ohta, Kenichi Ogata
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Publication number: 20130169713Abstract: A method of making a liquid discharge head which includes a nozzle to discharge liquid, a pressure chamber communicating with the nozzle, a pressure chamber substrate to form surfaces of the pressure chamber, and a piezoelectric actuator to apply pressure to liquid in the pressure chamber having a lower electrode, a ferroelectric film, and an upper electrode, includes a silicon wafer supplying process, a position adjustment process, a surface treatment process to reform a surface of the lower electrode, a liquid applying process to apply ferroelectric precursor on the lower electrode by an inkjet method, a heating process to heat the ferroelectric precursor film, and a cooling process. A series of processes from the position adjustment process to the cooling process is iterated to form a ferroelectric film having a predetermined thickness. The series of processes is performed with certain waiting times inserted between key processes.Type: ApplicationFiled: December 27, 2012Publication date: July 4, 2013Applicant: RICOH COMPANY, LTD.Inventors: Atsushi Takeuchi, Osamu Machida, Akira Shimofuku, Xianfeng Chen, Ryo Tashiro
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Publication number: 20130164436Abstract: A thin film manufacturing apparatus is disclosed, including a liquid ejecting unit which ejects a liquid onto an object on which a film is to be formed and which forms a coating film; a first laser irradiating unit which continuously irradiates a laser light onto the coating film and which evaporates a solvent of the coating film; and a second laser irradiating unit which irradiates a laser light pulse onto the coating film of which the solvent is evaporated and which crystallizes the coating film of which the solvent is evaporated.Type: ApplicationFiled: December 20, 2012Publication date: June 27, 2013Applicant: RICOH COMPANYInventors: Masahiro Yagi, Osamu Machida, Ryo Tashiro, Jochen Stollenwerk, Melanie Meixner, Norbert Pirch, Peter Abels, Stefan Mann