Patents Examined by William J. Klimowicz
  • Patent number: 11355142
    Abstract: The magnetic tape includes a non-magnetic support; and a magnetic layer in which the magnetic layer has a timing-based servo pattern, an edge shape of the timing-based servo pattern, specified by magnetic force microscopy is a shape in which a difference between a value L99.9 of a cumulative distribution function of 99.9% and a value L0.1 of a cumulative distribution function of 0.1% in a position deviation width from an ideal shape of the magnetic tape in a longitudinal direction is 180 nm or less, and a difference between a spacing Safter measured on a surface of the magnetic layer by an optical interferometry after methyl-ethyl-ketone cleaning and a spacing Sbefore measured on the surface of the magnetic layer by an optical interferometry before methyl-ethyl-ketone cleaning is greater than 0 nm and 15.0 nm or less.
    Type: Grant
    Filed: January 30, 2020
    Date of Patent: June 7, 2022
    Assignee: FUJIFILM Corporation
    Inventors: Eiki Ozawa, Norihito Kasada, Atsushi Musha
  • Patent number: 11355143
    Abstract: Described are magnetic recording heads that include an air-bearing surface and that are designed to be useful or potentially useful in two or more different types of fluid atmospheres; also described are related methods of testing the magnetic recording heads and installing the magnetic recording heads in a hard disk drive, as well as hard disk drives that contain a magnetic recording head as described.
    Type: Grant
    Filed: June 8, 2020
    Date of Patent: June 7, 2022
    Assignee: Seagate Technology LLC
    Inventors: Jiaxi Lu, Matthew Aaron Carper, Abhik Rakshit
  • Patent number: 11355148
    Abstract: The magnetic recording medium includes: a non-magnetic support; and a magnetic layer including ferromagnetic powder, in which a difference Safter?Sbefore between a spacing Safter measured on a surface of the magnetic layer by optical interferometry after ethanol cleaning and a spacing Sbefore measured on the surface of the magnetic layer by optical interferometry before ethanol cleaning is more than 0 nm and 6.0 nm or less, and the non-magnetic support is an aromatic polyester support having a moisture absorption of 0.3% or less.
    Type: Grant
    Filed: May 14, 2020
    Date of Patent: June 7, 2022
    Assignee: FUJIFILM Corporation
    Inventor: Norihito Kasada
  • Patent number: 11355146
    Abstract: The magnetic tape includes a non-magnetic support and a magnetic layer, in which an edge shape of the timing-based servo pattern, specified by magnetic force microscopy is a shape in which a difference between a value L99.9 of a cumulative distribution function of 99.9% and a value L0.1 of a cumulative distribution function of 0.1% in a position deviation width from an ideal shape of the magnetic tape in a longitudinal direction is 180 nm or less, and in which a difference between a spacing Safter measured on a surface of the magnetic layer by an optical interferometry after ethanol cleaning and a spacing Sbefore measured on the surface of the magnetic layer by an optical interferometry before ethanol cleaning is greater than 0 nm and 6.0 nm or less.
    Type: Grant
    Filed: January 30, 2020
    Date of Patent: June 7, 2022
    Assignee: FUJIFILM Corporation
    Inventors: Eiki Ozawa, Norihito Kasada, Atsushi Musha
  • Patent number: 11348609
    Abstract: According to one embodiment, a head suspension assembly includes a support plate, a wiring member on the support plate, a head, and a piezoelectric element on the wiring member. The wiring member includes a metal plate and a multilayered member including a first insulating layer, a conducting layer, a second insulating layer, and connection pads formed from the conducting layer. Each of the connection pads is overlaid on a recess formed in the first insulating layer, so as to form a recessed portion along the recess, and the second insulating layer includes an opening opposing each of the connection pads. The piezoelectric element is connected to the connection pads by a conductive adhesive filled in the openings and the recessed portions of the connection pads.
    Type: Grant
    Filed: February 12, 2021
    Date of Patent: May 31, 2022
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION
    Inventor: Hirofumi Nesori
  • Patent number: 11344990
    Abstract: An assembly for lapping multiple row bars, the assembly including a carrier having at least one carrier bond pad, multiple row bars adjacent to each other in a stack, wherein a first row bar of the stack is positioned closer to the carrier than any of the other multiple row bars of the stack and comprises at least one row bar bond pad, an electrical connection between at least one of the carrier bond pads and at least one of the row bar bond pads of the first row bar, and at least one electrical trace extending through at least two of the multiple row bars and electrically connected to at least the first row bar and one additional row bar of the stack. An outermost row bar of the stack includes an outer surface and at least one electronic lapping guide.
    Type: Grant
    Filed: December 27, 2019
    Date of Patent: May 31, 2022
    Assignee: Seagate Technology LLC
    Inventors: Gary J. Kunkel, Zoran Jandric
  • Patent number: 11341991
    Abstract: According to one embodiment, a disk device includes a housing, a temperature sensor in the housing, a magnetic disk in the housing, a magnetic head disposed in the housing to be movable in a radial direction of the magnetic disk, the magnetic head including a write head, a read head, a first thermal actuator, and a second thermal actuator, a power supply circuit which supplies first power to the first thermal actuator and supplies second power to the second thermal actuator, and a controller configured to adjust a power ratio between the first power and the second power, based on at least one of a change in temperature inside the housing and a change in a radial position of the magnetic head in the radial direction.
    Type: Grant
    Filed: July 16, 2021
    Date of Patent: May 24, 2022
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Electronic Devices & Storage Corporation
    Inventors: Mio Okada, Toru Watanabe, Masami Yamane
  • Patent number: 11341990
    Abstract: A recording head for writing data on tracks of a data storage medium is provided. The recording head includes a writer having a write pole and a trailing shield. The write pole includes a pole tip configured to write on the tracks of the data storage medium. The recording head also includes first and second writing-assistance wires positioned between the pole tip and the trailing shield in a down-track direction to enable a writing-assistance current to be provided to produce an assist magnetic field that augments a write field produced by the write pole.
    Type: Grant
    Filed: May 26, 2021
    Date of Patent: May 24, 2022
    Assignee: Seagate Technology LLC
    Inventors: Zengyuan Liu, Edward Charles Gage, Tim Rausch, Stephanie Hernandez
  • Patent number: 11342650
    Abstract: According to one embodiment, a disk device includes a housing including a sidewall, a magnetic disk, a wireless communication device including a first communication antenna, and a first insulating member. The sidewall includes a first through portion. The first insulating member closes the first through portion. The first communication antenna is located in the first through portion, is disposed spaced from the housing, and wirelessly communicates with an outside of the housing.
    Type: Grant
    Filed: March 10, 2021
    Date of Patent: May 24, 2022
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION
    Inventors: Jia Liu, Taichi Okano, Kota Tokuda, Nobuhiro Yamamoto
  • Patent number: 11341997
    Abstract: According to one embodiment, a disk device includes a plurality of recording media each including a recording layer and an actuator assembly including an actuator block rotatably supported around a rotation shaft, a plurality of arms extending from the actuator block, and suspension assemblies respectively attached to the arms and supporting respective magnetic heads. Of the plurality of arms, at least one arm has vibration characteristics different from those of the other arms.
    Type: Grant
    Filed: February 19, 2021
    Date of Patent: May 24, 2022
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION
    Inventor: Tomoyuki Tokizaki
  • Patent number: 11335363
    Abstract: A lifter mechanism includes: a first lifter; a second lifter; a first biasing member that biases the second lifter from a second lower limit position toward a second upper limit position; a locking lever that is displaced between a locked position in which the locking lever locks the second lifter in the second lower limit position and a released position in which the locking lever releases the lock of the second lifter from the second lower limit position; a second biasing member that biases the locking lever from the locked position toward the released position; a holding member that holds the locking lever in the locked position; and a queueing lever that pushes down the second lifter from the second upper limit position to the second lower limit position.
    Type: Grant
    Filed: September 17, 2019
    Date of Patent: May 17, 2022
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Masayuki Shiwa, Tomoyuki Yamashiro
  • Patent number: 11335368
    Abstract: Provided is a recording tape cartridge including: a case that is configured by causing a peripheral wall of an upper case and a peripheral wall of a lower case to abut against each other and accommodates a reel on which a recording tape is wound; a reference surface that is formed on the lower case and serves as a reference in an axial direction of the reel in a case where the case is loaded into a drive device; a noncontact communication medium on which individual information is recorded, the noncontact communication medium being accommodated in the lower case and having a plate shape; a supporting portion that is formed on the lower case and supports the noncontact communication medium such that the noncontact communication medium is disposed while being inclined with respect to the reference surface at an angle of approximately 45 degrees; a position restricting portion that is formed on the lower case and restricts a position of a lower end portion of the noncontact communication medium; and a retaining p
    Type: Grant
    Filed: March 11, 2021
    Date of Patent: May 17, 2022
    Assignee: FUJIFILM CORPORATION
    Inventor: Yosuke Sumiya
  • Patent number: 11315598
    Abstract: A pivoting, passive servo controlled, self propelled and tangentially tracking tone arm, featuring a floating head shell/transducer assembly that tracks the groove in a disk-record independently of the tone arm itself and utilizing the so-called inward force to propel the tone arm across the disk record.
    Type: Grant
    Filed: September 6, 2020
    Date of Patent: April 26, 2022
    Inventor: Ralf Eckehart Dieckmann
  • Patent number: 11315592
    Abstract: A data storage device (DSD) includes a base-deck, a disc above the base-deck, and a shaft extending perpendicular from the base-deck. The DSD also includes a head stack assembly (HSA) including a head gimbal assembly having a load beam and a head at a first end of the HSA. The head interacts with a surface of the disc. The HSA also includes a second end movably mounted on the shaft. The DSD additionally includes an elevator that linearly moves the HSA along the shaft to adjust a distance between the load beam and the surface of the disc in response to receiving a feedback signal associated with the interaction of the head with the surface of the disc. The feedback signal is one of a plurality of feedback signals employed by the elevator to adjust the distance between the load beam and the surface of the disc.
    Type: Grant
    Filed: February 10, 2021
    Date of Patent: April 26, 2022
    Assignee: Seagate Technology LLC
    Inventors: Matthew Aaron Carper, Anil J. Reddy, Brett R. Herdendorf, Riyan Alex Mendonsa
  • Patent number: 11315593
    Abstract: The present disclosure generally relates to a tape embedded drive having a head-gimbal assembly (HGA) and a contact plate. By using a support structure or contact plate beneath the tape, read and write heads can be designed to be narrower than the tape. The support structure or contact plate can stretch or relax the tape so that the spacing between servo tracks on the tape corresponds to the servo to servo spacing on the head. HGAs, which are narrower than the tape, can fly over the tape and read data from and write data to the tape. The HGA can have a single head or multiple heads. Additionally, multiple independent head assemblies can also be used for reading from and writing to the same tape.
    Type: Grant
    Filed: April 14, 2021
    Date of Patent: April 26, 2022
    Assignee: Western Digital Technologies, Inc.
    Inventors: Diane L. Brown, Trevor W. Olson
  • Patent number: 11302364
    Abstract: The present disclosure relates to a data storage device interior components and/or data storage device housing components that include one or more solid-state deposition layers, and related methods of applying solid-state material to said components via solid-state deposition.
    Type: Grant
    Filed: April 27, 2021
    Date of Patent: April 12, 2022
    Assignee: Seagate Technology LLC
    Inventors: Jerome Coffey, Sam Severson, David Lapp
  • Patent number: 11302363
    Abstract: The present disclosure relates to a data storage device interior components and/or data storage device housing components that include one or more solid-state deposition layers, and related methods of applying solid-state material to said components via solid-state deposition.
    Type: Grant
    Filed: April 27, 2021
    Date of Patent: April 12, 2022
    Assignee: Seagate Technology LLC
    Inventors: Jerome Coffey, Sam Severson, David Lapp
  • Patent number: 11295767
    Abstract: A PMR (perpendicular magnetic recording) write head includes a main write pole (MP) that is surrounded by magnetic shields, including laterally disposed side shields (SS), a trailing shield (TS) and a leading shield (LS). The leading shield includes a leading-edge taper (LET) that conformally abuts a tapered side of the write pole. The leading-edge shield and the leading-edge taper can be independently recessed in a proximal direction away from an air bearing surface (ABS) plane so that one or the other of them is recessed and the other remains coplanar with the ABS, or both are recessed by independent amounts. In another configuration the LS is not planar but has a recessed portion in a center track region and two surrounding regions that are coplanar with the ABS plane.
    Type: Grant
    Filed: December 4, 2018
    Date of Patent: April 5, 2022
    Assignee: Headway Technologies, Inc.
    Inventors: Ying Liu, Yuhui Tang, Yue Liu, Kei Hirata
  • Patent number: 11294593
    Abstract: A storage system includes a media player including a preamplifier that is adapted to provide data access to a storage cartridge lacking an independent read/write preamplifier. The media player couples to the storage cartridges across an interconnect, and the storage cartridge is adapted to perform data access operations responsive to signals received from the media player through the interconnect.
    Type: Grant
    Filed: June 28, 2021
    Date of Patent: April 5, 2022
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Riyan Alex Mendonsa, Jon D Trantham, Peng Peng, Brett R. Herdendorf, Krishnan Subramanian
  • Patent number: 11289117
    Abstract: A magnetic head includes a medium facing surface, a main pole, a trailing shield, and a spin torque oscillator. A bottom surface of the trailing shield includes a first portion that includes an end located in the medium facing surface and is in contact with the spin torque oscillator at least in part. An element height that is a dimension of the spin torque oscillator in a direction perpendicular to the medium facing surface and a writer height that is a dimension of the first portion in the direction perpendicular to the medium facing surface are different from each other.
    Type: Grant
    Filed: February 8, 2021
    Date of Patent: March 29, 2022
    Assignee: HEADWAY TECHNOLOGIES, INC.
    Inventors: Yoshitaka Sasaki, Hiroyuki Ito, Kazuki Sato, Shigeki Tanemura, Hironori Araki, Yoji Nomura, Tetsuya Roppongi, Tetsuhito Shinohara, Ying Liu, Min Li, Alain Truong, Yuhui Tang, Wenyu Chen