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7416795 |
Method for manufacturing magnetic metal powder, and magnetic metal powder
A method for manufacturing magnetic metal powder is provided. In the method, a powdered magnetic metal oxide is supplied to a heat treatment furnace with a carrier gas composed of a reducing gas.... |
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7344779 |
Magnetic powder
A fine magnetic powder suitable for magnetic tape capable of high-density magnetic recording is provided that helps to prevent degradation of tape surface property and durability with increasing... |
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7297423 |
Printed circuit board
A PCB that can transmit a high frequency signal of a GHz band with a low loss includes an insulator and magnetic nanoparticles dispersed in the insulator. |
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7241519 |
Magnetic recording medium with columar magnetic layer
Provided is a magnetic recording medium capable of achieving higher density recording. The magnetic recording medium comprises a magnetic layer formed on a non-magnetic base through vacuum oblique... |
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7147916 |
Magnetic material, method for producing the same, and magnetic recording medium
A magnetic material having a structure of a material having a ferromagnetic phase at ordinary temperature as a core and a material having an antiferromagnetic phase at ordinary temperature... |
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7041398 |
Magnetic recording medium and magnetic recording and reproducing method using the same
A magnetic recording medium comprising a non-magnetic support and a magnetic layer containing a ferromagnetic metal powder and a binder, wherein the ferromagnetic metal powder comprises an oxide... |
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6841271 |
Ferromagnetic iron alloy powder for magnetic recording medium and method of producing the same
A ferromagnetic iron alloy powder for a magnetic recording medium is composed of acicular iron-base particles of an average major axis length (X) of not less than 20 nm and not greater than 80 nm... |
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6835445 |
Magnetic recording medium
A magnetic recording medium comprising: a support; and a magnetic layer comprising ferromagnetic metal powder and a binder, wherein the ferromagnetic metal powder is acicular composite magnetic... |
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6767611 |
Black magnetic acicular containing composite particles magnetic recording medium
A magnetic recording medium using black magnetic acicular composite particles produced by forming a single carbon black coat between the surface of magnetic acicular cobalt-coated iron oxide... |
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6720074 |
Insulator coated magnetic nanoparticulate composites with reduced core loss and method of manufacture thereof
A series of bulk-size magnetic/insulating nanostructured composite soft magnetic materials with significantly reduced core loss and its manufacturing technology. This insulator coated magnetic... |
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6607807 |
Ferromagnetic metal powder and magnetic recording medium using the same
A ferromagnetic metal powder comprises: a metal portion comprising Fe; and an oxide layer around the metal portion, wherein the oxide layer comprises an iron oxide having magnetism such that the... |
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6432563 |
Zinc enhanced hard disk media
The present invention provides a magnetic recording media incorporating Zn containing layers in close proximity to a magnetic layer to provide media having increased coercivity and lower noise.... |
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5962125 |
Magnetic recording medium
A magnetic recording medium is disclosed, comprising a non-magnetic support having thereon at least one magnetic layer comprising a binder and a ferromagnetic metal powder mainly composed of iron,... |
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5843565 |
Particulate magnetic medium utilizing keeper technology and methods of manufacture
The flexible, particulate magnetic storage medium includes a substrate and a magnetic storage layer of hard magnetic particles held within a binder. The flexible, particulate magnetic storage... |
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5599627 |
Magnetic particles comprising magnetite core and process for producing the same
Magnetic toner particles composed of magnetite core particles containing 0.10 to 1.00 wt % silicon and a hydrous coprecipiate of silica and alumina deposited or adhered on the surfaces of the... |
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5514463 |
Magnetic recording medium
A magnetic recording medium includes a non-magnetic support and a magnetic layer, The magnetic layer comprises a binder and a Co-containing iron-based metal powder dispersed in the binder,... |
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5506064 |
Magnetic recording medium
Iron carbide particles are heat treated in a nitrogen atmosphere to form magnetic particles each comprising an iron base core and a carbon base surface. This magnetic particle powder having... |
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5498512 |
Photographic element having a transparent magnetic recording layer
A photographic element having a light-sensitive layer and a transparent magnetic recording layer, the transparent magnetic recording layer comprising ferromagnetic particles having a ferromagnetic... |
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5260132 |
Acicular alloy magnetic powder
An acicular alloy base magnetic powder comprising iron and cobalt, which has an average particle long axis size of not larger than 0.25 μm, an axial ratio of from 4 to 8, a cobalt content of from... |
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5252441 |
Transparent magnetic recording layers and photographic elements containing the same
A photographic element including a light-sensitive layer and a transparent magnetic layer wherein the magnetic particles in the transparent binder are cobalt surface treated gamma iron oxide (Fe2... |
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5229259 |
Silver halide photographic material
Disclosed is a silver halide photographic material comprising a silver halide emulsion layer on at least one side of a support and at least one magnetic recording layer on at least one side of the... |
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5225281 |
Magnetic recording medium comprising a magnetic coating containing magnetic powder obtained from a process of coating iron oxide powder with silicon, zirconium and aluminum compounds and reducing
The magnetic recording medium of the invention has a magnetic layer formed by mixing an iron base metal magnetic powder with a binder, the metal magnetic powder being prepared by furnishing... |
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5084342 |
Magnetic recording medium
A magnetic recording medium is disclosed. The magnetic recording medium is capable of high density recording; has excellent electromagnetic conversion properties including S/N ratio; whose... |
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5045390 |
Magnetic recording medium
A magnetic recording medium is disclosed. The magnetic recording medium is capable of high density recording; has excellent electromagnetic conversion properties including S/N ratio; whose... |
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4970124 |
New magnetic metallic particles using rare-earth elements
Ferromagnetic metallic particles having incorporated into the surface a rare earth element are employed to make magnetic recording elements. These particles are obtained from non-magnetic particle... |
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4959263 |
Magnetic recording medium
A magnetic recording medium is described, comprising a nonmagnetic support having thereon a magnetic layer containing a binder which is cross-linkable or polymerizable by radiation irradiation and... |
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4956220 |
Magnetic recording medium
A magnetic recording medium with improved output characteristics and durability is provided by using magnetic powder comprising iron-containing particles each of which carries a compound... |
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4882224 |
Magnetic particles, method for making and electromagnetic clutch using same
Magnetic particles comprising a magnetic core and a shell covering the core are provided wherein the shell is formed from titanium nitride, titanium carbide, aluminum nitride, aluminum oxide,... |
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4874668 |
Magnetic powder and magnetic recording medium comprising the same
Magnetic powder at least a part of particles of which have surface-adjacent layers comprising an aluminium-containing oxide of the corundum structure has high hardness so that a magnetic recording... |
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4844977 |
Magnetic recording medium
A magnetic recording medium is disclosed which comprises a support having formed thereon a magnetic layer containing a magnetic metallic powder with no change in its differential thermal curve up... |
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4554089 |
Ferromagnetic particles with stable magnetic characteristics and method of preparing same
Cobalt-free ferromagnetic particles are disclosed. The particles are comprised of ferromagnetic metal inner cores and an outer oxidized layer. The particles have a saturation magnetization of 60... |
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4218507 |
Coated particles and process of preparing same
Novel powders, and resinous compositions bearing said powders, characterized by excellent chemical stability, electrical conductivity, and energy-absorbing characteristics. These three... |
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4137361 |
Powder products
Novel powders, and resinous compositions bearing said powders, characterized by excellent chemical stability, electrical conductivity, and energy-absorbing characteristics. These three... |
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3262812 |
Magnetic recording tape with magnetic layer of oxide coated iron-cobalt alloy particles in a binder
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