Patents Represented by Attorney, Agent or Law Firm Sughurue Mion, PLLC
  • Magnetic recording medium comprising a magnetic layer exhibiting low &Dgr;M value
    Patent number: 6727009
    Abstract: A magnetic recording medium comprises a non-magnetic layer containing a non-magnetic powder abd a binder provided on a support, and a magnetic layer containing a ferromagnetic powder and a binder provided on the non-magnetic layer, wherein the magnetic layer contains a hexagonal ferrite magnetic powder having an average tabular diameter of 10 to 28 nm and has a coercive force (Hc) of 135 to 400 kA/m, a ratio (Hc/Hk) of the Hc to an anisotropic magnetic field (Hk) of 0.3 to 0.6, and a maximum value of &Dgr;M of 0 to 0.10.
    Type: Grant
    Filed: August 29, 2001
    Date of Patent: April 27, 2004
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kouichi Masaki, Toshiyuki Suzuki