Electrical Or Magnetic Shielding Patents (Class 360/281.6)
  • Patent number: 7438229
    Abstract: A magnetic shield member for a device with a magnetic reader, the magnetic shield member includes a biasing member including a first end, a second end opposite to the first end and an intermediate portion disposed between the first and second ends, the first end configured to be attached within the device with a magnetic reader, the second end configured to face the magnetic reader and a shielding member including a first end, a second end opposite to the first end and an arched portion disposed between the first end and the second end, wherein the first end of the shielding member extends integrally from the second end of the biasing member, the arched portion includes a concave portion which faces the magnetic reader, wherein the shielding member applies a force to conform a document against the magnetic reader and shields the magnetic reader from magnetic interference.
    Type: Grant
    Filed: May 8, 2008
    Date of Patent: October 21, 2008
    Assignee: International Business Machines Corporation
    Inventors: Richard H. Harris, Robert A. Myers
  • Patent number: 7383993
    Abstract: A magnetic shield member for a device with a magnetic reader, the magnetic shield member includes a biasing member including a first end, a second end opposite to the first end and an intermediate portion disposed between the first and second ends, the first end configured to be attached within the device with a magnetic reader, the second end configured to face the magnetic reader and a shielding member including a first end, a second end opposite to the first end and an arched portion disposed between the first end and the second end, wherein the first end of the shielding member extends integrally from the second end of the biasing member, the arched portion includes a concave portion which faces the magnetic reader, wherein the shielding member applies a force to conform a document against the magnetic reader and shields the magnetic reader from magnetic interference.
    Type: Grant
    Filed: November 2, 2007
    Date of Patent: June 10, 2008
    Assignee: International Business Machines Corporation
    Inventors: Richard H. Harris, Robert A. Myers
  • Patent number: 6985336
    Abstract: A head substrate and a protective substrate are formed of an electrostatic-discharge resistant conductive material having an electrical resistivity of 102 to 1010 ?cm. These substrates are electrically connected to a base metal through the use of conductive paste and are set to a ground potential via the base metal and a rotating drum. This suppresses a discharge current flowing through an MR element when an electrostatically charged substance touches or approaches a magnetic reproducing head, a terminal, a conducting wire, etc. to generate an electrostatic discharge. The magnetic reproducing head including an MR element and the like is prevented against an electrostatic discharge damage. It is possible to provide the magnetic reproducing head, a head drum apparatus, and a magnetic recording-reproducing apparatus which can highly effectively prevent an electrostatic discharge damage.
    Type: Grant
    Filed: April 28, 2005
    Date of Patent: January 10, 2006
    Assignee: Sony Corporation
    Inventors: Yutaka Soda, Yoshimi Takahashi, Susumu Sato, Seiji Onoe
  • Patent number: 6704174
    Abstract: A head substrate and a projection substrate of a head drum comprise a conductive material having a resistance of 1×1010&OHgr; or less and are connected to a metal base so as to be at the ground potential via the metal base and a rotating drum. These antistatic treatments allow static electricity charged on a magnetic tape to be discharged to the head substrate and the protection substrate without flowing to a magneto-resistive (MR) element, thereby preventing the electrostatic discharge breakdown of the MR element.
    Type: Grant
    Filed: December 13, 2001
    Date of Patent: March 9, 2004
    Assignee: Sony Corporation
    Inventors: Yutaka Soda, Nobuyuki Nagai, Katsuhiro Kasuga, Hiroshi Meguro, Tadashi Ozue