Patents by Inventor Kenji Kuroki
Kenji Kuroki 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: 11189307Abstract: Aspects of the present disclosure generally relate to a base and related methods for write and read heads. In one example, the base and related methods are used as part of a magnetic storage device, for example a magnetic media drive such as a hard disk drive (HDD) or a magnetic tape drive (e.g., a tape embedded drive). The base includes one or more base bodies formed of a ceramic material. Each base body includes an inward surface, an outward surface opposing the inward surface, a lower surface, and an angled upper surface disposed above the lower surface. Each base body includes a vertical opening extending between the upper surface and the lower surface. In one example, two base bodies are bonded together. In one example, the two base bodies combine to form a single base body of the base that is monolithic and unitary.Type: GrantFiled: May 26, 2020Date of Patent: November 30, 2021Assignee: WESTERN DIGITAL TECHNOLOGIES, INC.Inventors: Eduardo Torres, Oscar Ruiz, Kenji Kuroki
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Publication number: 20200243281Abstract: A switch includes a housing, a movable member reciprocable in a movement direction relative to the housing and including an operation part located at an end of the movable member outside the housing, and a guide that guides the movable member in the movement direction. The operation part has a plurality of slopes extending linearly from the operation surface toward a distal end of the movable member outside the housing, sloping away from a central axis of the movable member toward the operation surface, and sloping in directions intersecting with one another as viewed in the movement direction.Type: ApplicationFiled: October 12, 2018Publication date: July 30, 2020Applicant: OMRON CorporationInventors: Kenji KUROKI, Yuya KUDO, Kenji TAKAHAMA
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Publication number: 20200219681Abstract: A switch includes a housing, a movable member reciprocable in the movement direction relative to the housing and including an operation part located at an end of the movable member outside the housing, a guide that guides the movable member in the movement direction, and a sealant sealing a gap between the movable member and the housing inside the compartment.Type: ApplicationFiled: October 12, 2018Publication date: July 9, 2020Applicant: OMRON CorporationInventors: Kenji KUROKI, Yuya KUDO, Kenji TAKAHAMA
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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: 10290443Abstract: A switch includes a housing, a common stationary contact terminal, an individual stationary contact terminal, and a plunger including a moving contact unit. The moving contact unit includes a body, a first arm, a second arm, and a third arm extending from the body in a direction intersecting with a parallel direction in which the common stationary contact terminal and the individual stationary contact terminal are arranged parallel to each other, electrically interconnected with each other, and are spaced apart from one another in the parallel direction, a first moving contact included in the first arm, a second moving contact included in the second arm, and a third moving contact included in the third arm.Type: GrantFiled: March 23, 2018Date of Patent: May 14, 2019Assignee: OMRON CorporationInventors: Hiroyuki Fujita, Kenji Kuroki
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Patent number: 10256056Abstract: A switch device has a circuit unit that forms an electric circuit that detects at least one of disconnection and a short circuit of a wiring connecting an external device and the switch device, two terminals connected to the electric circuit, and configured to be connected to the wiring, a contact mechanism that moves in a movable direction to switch on and off of a contact of the electric circuit, and a circuit board on which the circuit unit, the two terminals, and the contact mechanism are disposed. The electric circuit comprises at least one resistive element. The circuit unit and the contact mechanism are disposed on an identical surface side of the circuit board. The resistive element is disposed in a direction perpendicular to the movable direction of the contact mechanism when viewed from at least a part of a movable range of the contact mechanism.Type: GrantFiled: September 25, 2015Date of Patent: April 9, 2019Assignee: Omron CorporationInventors: Tetsuhiko Miyoshi, Kenji Kuroki
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Publication number: 20180315558Abstract: A switch includes a housing, a common stationary contact terminal, an individual stationary contact terminal, and a plunger including a moving contact unit. The moving contact unit includes a body, a first arm, a second arm, and a third arm extending from the body in a direction intersecting with a parallel direction in which the common stationary contact terminal and the individual stationary contact terminal are arranged parallel to each other, electrically interconnected with each other, and are spaced apart from one another in the parallel direction, a first moving contact included in the first arm, a second moving contact included in the second arm, and a third moving contact included in the third arm.Type: ApplicationFiled: March 23, 2018Publication date: November 1, 2018Applicant: OMRON CorporationInventors: Hiroyuki FUJITA, Kenji KUROKI
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Publication number: 20180167528Abstract: An electronic appliance including: a first circuit board including a first processor; a second circuit board; a communication signal line configured to connect between the first circuit board and the second circuit board; and a watchdog timer reset IC, wherein the second circuit board includes: a second processor; a receiving portion configured to receive a signal via the line; a first input/output port configured to output a first signal based on an instruction from the second processor; a second input/output port configured to output a second signal in response to the receiving portion receiving a predetermined signal from the first processor; and a logical operation circuit configured to output a watchdog signal based on a logical operation result of the first signal and the second signal, and wherein the watchdog timer reset IC is configured to output a reset signal for resetting the second processor based on the watchdog signal.Type: ApplicationFiled: November 9, 2017Publication date: June 14, 2018Inventor: Kenji Kuroki
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Patent number: 9897958Abstract: An image forming apparatus that includes a first control unit and a second control unit. The first control unit performs control of a load by outputting a pulse signal based on a clock signal output by a first oscillator. The second control unit is connected to the first control unit by a serial communication signal line, and performs control of a load by outputting a pulse signal based on a clock signal output by a second oscillator. The second control unit measures a width of the pulse signal output from the first control unit via the serial communication signal line, compares a pulse signal width designated by an adjustment request with the measured width of the pulse signal, and corrects, based on a result of the comparing, the width of the pulse signal that is based on the clock signal output by the second oscillator.Type: GrantFiled: October 26, 2016Date of Patent: February 20, 2018Assignee: Canon Kabushiki KaishaInventor: Kenji Kuroki
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Publication number: 20170146938Abstract: An image forming apparatus, comprises: a first control unit which performs control of a load by outputting a pulse signal based on a clock signal output by a first oscillator; and a second control unit which is connected to the first control unit by a serial communication signal line, and performs control of a load by outputting a pulse signal based on a clock signal output by a second oscillator, wherein the second control unit measures a width of the pulse signal output from the first control unit via the serial communication signal line; compares a pulse signal width designated by an adjustment request with the measured width of the pulse signal; and corrects, based on a result of the comparing, the width of the pulse signal that is based on the clock signal output by the second oscillator.Type: ApplicationFiled: October 26, 2016Publication date: May 25, 2017Inventor: Kenji Kuroki
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Publication number: 20170125067Abstract: An example storage device may include a sealed enclosure that encloses an atmosphere comprising a gas. The sealed enclosure may enclose a storage medium and a read-write head including a thermal flying-height control (TFC) heater and an embedded contact sensor (ECS) including a DC resistance (DCR) sensor. A DC resistance exhibited by the DCR sensor may be indicative of a temperature sensed adjacent the DCR sensor. The storage device may include a controller. The controller may cause a current to be applied to the TFC heater to generate heat, receive a signal from the ECS indicative of the temperature sensed by the DCR sensor, and determine a composition of the atmosphere or a concentration of the gas based on the signal.Type: ApplicationFiled: October 28, 2015Publication date: May 4, 2017Inventors: Yuka Morimoto, Yuichi Aoki, Kenji Kuroki, Kohtaroh Nakano
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Patent number: 9502190Abstract: A switch has a normally-closed fixed contact unit, a common contact unit, a pressing member, and a movable contact that is attached to the pressing member, and that slides on the normally-closed fixed contact unit and the common contact unit. A conductive region and an insulating region are formed on a sliding surface of the movable contact in the normally-closed fixed contact unit in order toward a pressing direction of the pressing member. A conductive region and an insulating region are formed on a sliding surface of the movable contact in the common contact unit in order toward the pressing direction. The movable contact slides from the conductive regions to the insulating regions to switch from a closed state to an opened state.Type: GrantFiled: March 18, 2014Date of Patent: November 22, 2016Assignee: OMRON CorporationInventors: Hiroyuki Fujita, Kenichi Ando, Kenji Kuroki
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Publication number: 20160099119Abstract: A switch device has a circuit unit that forms an electric circuit that detects at least one of disconnection and a short circuit of a wiring connecting an external device and the switch device, two terminals connected to the electric circuit, and configured to be connected to the wiring, a contact mechanism that moves in a movable direction to switch on and off of a contact of the electric circuit, and a circuit board on which the circuit unit, the two terminals, and the contact mechanism are disposed. The electric circuit comprises at least one resistive element. The circuit unit and the contact mechanism are disposed on an identical surface side of the circuit board. The resistive element is disposed in a direction perpendicular to the movable direction of the contact mechanism when viewed from at least a part of a movable range of the contact mechanism.Type: ApplicationFiled: September 25, 2015Publication date: April 7, 2016Applicant: OMRON CorporationInventors: Tetsuhiko Miyoshi, Kenji Kuroki
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Patent number: 9075628Abstract: Provided is an electronic system capable of dynamically switching a communication speed among a plurality of electronic devices connected in series. A first communication device and a second communication device are connected in series to a host controller. After controlling the communication speed of the second communication device to be a communication speed defined in advance, the host controller controls the communication speed of the first communication device to be the same communication speed as the communication speed of the second communication device.Type: GrantFiled: August 21, 2013Date of Patent: July 7, 2015Assignee: Canon Kabushiki KaishaInventors: Kenji Kuroki, Keita Takahashi, Satoru Yamamoto, Takuya Hayakawa, Kuniyasu Kimura
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Patent number: 8997079Abstract: An image forming apparatus which makes it possible to perform an image forming operation even during update of a control program. The image forming apparatus is provided with distributed module controllers each including a sub CPU and a flash ROM storing a control program for controlling the sub CPU. The main CPU of the image forming apparatus updates the control programs stored in the respective flash ROMs. The main CPU displays a screen that enables selection of functions to be used in an image forming job executed by the image forming apparatus. During execution of update of a control program targeted for update, out of the selectable functions, the main CPU disables a function which uses a sub CPU associated with the control program.Type: GrantFiled: November 14, 2012Date of Patent: March 31, 2015Assignee: Canon Kabushiki KaishaInventors: Kenji Kuroki, Hiroto Nishihara, Hiroyuki Eda, Tsuyoshi Shiga, Tadaaki Saida, Ryou Sakaguchi, Atsushi Chaki
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Patent number: 8989203Abstract: Provided is an electronic device capable of performing stable communications between a plurality of electronic devices connected in series. A communication device (121) is inserted and connected to a serial communication channel between a host controller (101) and a communication device (141) at a subsequent stage, and includes a buffer (124) for temporarily accumulating a first data received from the communication device (141) at the subsequent stage. The communication device (121) monitors a communication situation with respect to the host controller (101) and the communication device (141), accumulates the first data in the buffer (124) when a second data to be transmitted from the communication device (121) to the host controller (101) is being transmitted to the host controller (101), and transmits the first data accumulated in the buffer (124) to the host controller (101) in response to the finish of transmission of the second data.Type: GrantFiled: February 14, 2013Date of Patent: March 24, 2015Assignee: Canon Kabushiki KaishaInventors: Kenji Kuroki, Keita Takahashi, Kuniyasu Kimura, Satoru Yamamoto, Takuya Hayakawa
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Publication number: 20140284195Abstract: A switch has a normally-closed fixed contact unit, a common contact unit, a pressing member, and a movable contact that is attached to the pressing member, and that slides on the normally-closed fixed contact unit and the common contact unit. A conductive region and an insulating region are formed on a sliding surface of the movable contact in the normally-closed fixed contact unit in order toward a pressing direction of the pressing member. A conductive region and an insulating region are formed on a sliding surface of the movable contact in the common contact unit in order toward the pressing direction. The movable contact slides from the conductive regions to the insulating regions to switch from a closed state to an opened state.Type: ApplicationFiled: March 18, 2014Publication date: September 25, 2014Applicant: OMRON CORPORATIONInventors: Hiroyuki Fujita, Kenichi Ando, Kenji Kuroki
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Patent number: 8837994Abstract: If any of a plurality of conditions is satisfied, an image forming apparatus having a plurality of image forming units that form images on an intermediate transfer member in a superimposed manner detects, using a pattern detection sensor, the amount of color misregistration of the images formed by the plurality of image forming units on the intermediate transfer member and corrects the color misregistration of the images formed by the plurality of image forming units in accordance with the amount of color misregistration that is smaller than a color misregistration correction tolerance, which varies depending on the plurality of conditions, and that has been detected by the pattern detection sensor.Type: GrantFiled: December 15, 2011Date of Patent: September 16, 2014Assignee: Canon Kabushiki KaishaInventors: Kenji Kuroki, Hiroto Nishihara, Hiroyuki Eda, Hideyuki Ikegami, Tsuyoshi Shiga
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Patent number: 8773801Abstract: A magnetic-recording head with a first thermal fly-height control (TFC) element and an embedded contact sensor element (ECSE) configurable as a second TFC element. The magnetic-recording head includes a write element, a read element, a first heater element, and an ECSE. The write element is configured for writing data to a magnetic-recording disk. The read element is configured for reading data from the magnetic-recording disk. The first heater element is configured as a first TFC element to coarsely adjust a fly-height of the magnetic-recording head with respect to the magnetic recording disk. The ECSE is configured to detect a contact with the magnetic-recording disk, and to function as a second heater element that is configured as a second TFC element to finely adjust the fly-height. The first heater element is configured with a first stroke-length larger than a second stroke-length of the second heater element for adjusting the fly-height.Type: GrantFiled: October 21, 2010Date of Patent: July 8, 2014Assignee: HGST Netherlands B.V.Inventors: Masayuki Kurita, Toshiya Shiramatsu, Kenji Kuroki, Yuki Shimizu
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Publication number: 20140056336Abstract: Provided is an electronic system capable of dynamically switching a communication speed among a plurality of electronic devices connected in series. A first communication device and a second communication device are connected in series to a host controller. After controlling the communication speed of the second communication device to be a communication speed defined in advance, the host controller controls the communication speed of the first communication device to be the same communication speed as the communication speed of the second communication device.Type: ApplicationFiled: August 21, 2013Publication date: February 27, 2014Applicant: CANON KABUSHIKI KAISHAInventors: Kenji Kuroki, Keita Takahashi, Satoru Yamamoto, Takuya Hayakawa, Kuniyasu Kimura