Patents
Sitemap › G11 - Information storage › G11B - Information storage based on relative movement between record carrier and transducer › G11B 5 - Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
Patents for G11B 5 - Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor (87,826)
10/1990
10/17/1990EP0392907A1 Process for producing a device using a thin layer film structure
10/17/1990EP0392906A1 Static magnetic read head
10/17/1990EP0392810A2 Magnetic recording medium
10/17/1990EP0392789A2 Tracking control device for a magnetic recording and reproducing apparatus
10/17/1990EP0392683A1 System for controlling head scan tracking utilizing tape position information
10/17/1990EP0392675A2 Substrate material for magnetic head and magnetic head using same
10/17/1990EP0392360A2 Method for manufacturing magnetic recording media
10/17/1990EP0392333A2 Foil for imprinting especially for hot imprinting with a thin magnetic layer
10/17/1990EP0392050A1 Method and apparatus for recording data information on a magnetic-recording medium
10/17/1990CN2064095U Cleaner for magnetic drum
10/17/1990CN1046241A Cassete type video tape with combined structure
10/17/1990CN1046240A Magnetooptical reocrding media and initialization methods thereof
10/17/1990CN1046238A Magneto-optical disk memory allay material and preparation method thereof
10/17/1990CN1046237A Thermoplastic polyurethanes having improved binder properties for magnetic media
10/16/1990USRE33383 Process for producing a magnetic read write head and head obtained by this process
10/16/1990US4964107 Relative timing precompensation of high-speed pulse signals for digital magnetic recoding
10/16/1990US4964009 Magnetic disk having an index area and a limited number of radially extending servo sections
10/16/1990US4964008 Rotatable magnetic-head unit for a magnetic-tape apparatus
10/16/1990US4964007 Crystallized glass-bonded amorphous metal magnetic film-non-magnetic substrate magnetic head
10/16/1990US4964006 Magnetic head device
10/16/1990US4964000 Circuit for separating simultaneously reproduced PCM and ATF signals having at least partially overlapping frequency bands
10/16/1990US4963995 Audio/video transceiver apparatus including compression means
10/16/1990US4963991 Video tape recorder capable of recording both narrow band and wideband signals
10/16/1990US4963806 Servo positioning apparatus
10/16/1990US4963639 (meth)acrylated polyurethane
10/16/1990US4963435 Wire with coating for ultrasonic bonding
10/16/1990US4963433 Improved electromagnetic properties and durability; nonhardening thermoplastic binder support
10/16/1990US4963402 Films containing liquid crystalline polymers
10/16/1990US4963209 Method for making stretched surface recording disk
10/16/1990US4962584 Manufacturing method for a magnetic disk recording reproducing head device
10/10/1990EP0391743A2 Acicular magnetic iron-based alloy particles and process for producing the same
10/10/1990EP0391734A2 Magnetooptical recording media and initialization methods thereof
10/10/1990EP0391728A1 Magnetic tape helical recording and playback apparatus adapted for postrecording
10/10/1990EP0391627A2 Speed detection apparatus, speed control motor, and track jump control circuit
10/10/1990EP0391578A1 Two phase metal/oxide films
10/10/1990EP0391388A1 Process for production of lepidocrosite
10/10/1990EP0391361A2 Process and apparatus for continuous production of cobalt-modified magnetic iron oxide
10/10/1990EP0391348A2 Cardan-type support for magnetic heads
10/10/1990EP0391258A2 Magnetic recording medium and method for its production
10/10/1990CN2063681U 录音卡 Recording Card
10/10/1990CN1045997A Prepn. of ferric oxide film by sputtering
10/09/1990US4962438 Magnetic head mounting plate with tape movement limiting surface
10/09/1990US4962437 Thin film servo head employing the inactive transducer coils to cancel write noise from nearby data heads
10/09/1990US4962236 Fluorinated polyethers; waxes, grease
10/09/1990US4961959 Quaternary ammonium salt of an alkoxysilane as a dispersant for magnetic pigment
10/06/1990CA2013897A1 Magnetooptical recording media and initialization methods thereof
10/04/1990WO1990011597A1 Magnetoresistant magnetic head for the longitudinal recording and method for making the same
10/04/1990WO1990011596A1 Magnetic head assembly
10/04/1990WO1990011595A1 Magnetic head
10/04/1990WO1990011594A1 Magnetic reading head with magnetoresistance for perpendicular recording and method for making such head
10/04/1990DE4009952A1 Datensignal-wiedergabevorrichtung Data signal reproducing device
10/03/1990EP0390724A1 Data recording and reproducing circuit
10/03/1990EP0390594A2 Magnetic recording medium
10/03/1990EP0390584A2 Photomagnetic composite head
10/03/1990EP0390559A2 Restored magnetic recording media and method of producing same.
10/03/1990EP0390555A2 Magnetic recording/reproducing apparatus
10/03/1990EP0390554A1 Magnetic reproducing head amplifier
10/03/1990EP0390512A2 Method of texturing a glass substrate
10/03/1990EP0390391A2 A magnetic recording medium with improved electromagnetic conversion characteristics and anti-environment properties
10/03/1990EP0390347A2 Recording head to optimize high density recording
10/03/1990EP0390221A2 Magneto-optical recording apparatus
10/03/1990EP0389994A2 A magnetic recording medium
10/03/1990EP0389597A1 Process for collectively obtaining the profile on magnetic heads
10/02/1990US4961123 Magnetic information media storage with optical servo tracks
10/02/1990US4961122 Hydrodynamic grooved bearing device
10/02/1990US4961121 Air bearing slider rail design with trumpet-shaped rail portion
10/02/1990US4960651 Magnetic devices
10/02/1990US4960636 Biaxially oriented polyester film for floppy disk
10/02/1990US4960609 Grafting fluoroether to carbon protective overcoat
10/02/1990US4960582 Roasting the spinel structure nickel ferrite-modified with zinc compound deposites in presence of barium chloride
10/02/1990US4960498 Sputtering a soft magnetic alloy layer on core halves with non-magnetic gap therebetween
10/02/1990US4960462 Acicular, ferromagnetic metal particles essentially consisting of iron, and their preparation
10/02/1990CA1274915A1 Method of making a linearity standard magnetic tape
10/01/1990WO1990011879A1 Molding method of magnetic disc substrate
10/01/1990CA2031216A1 Molding method for magnetic disc substrate
09/1990
09/27/1990DE3909437A1 Magnetic tape apparatus with automatic level setting
09/26/1990EP0389297A1 A spin glass magnetic body, a magnetic recording medium and a magnetic recording apparatus
09/26/1990EP0389222A2 Magnetic head and magnetic recording apparatus
09/26/1990EP0389195A2 A process of forming a patterned polyimide film and articles including such a film
09/26/1990EP0389143A2 Thin film magnetic heads, their manufacture and magnetic information storage apparatus including them
09/26/1990EP0389006A2 Method and apparatus for recording a digital information signal
09/26/1990EP0389005A2 Method and apparatus for recording a digital information signal
09/26/1990EP0388818A2 Coating apparatus
09/26/1990EP0388731A2 Magnetic information carrier
09/26/1990CN2062893U Inclined rotation device of magnetic head for inversion-type tape audio recorder
09/26/1990CN2062892U Multifunctional audio playback recorder
09/26/1990CN1045657A Magnetic tape used in postal service
09/26/1990CN1009774B Improved magnetic head supporting device
09/25/1990US4959741 Magnetic head with a controlled gap width
09/25/1990US4959740 Disc recording and/or reproducing apparatus including means for minimizing the effects of temperature changes
09/25/1990US4959738 Method and apparatus for driving a stepping motor
09/25/1990US4959599 Head positioner
09/25/1990US4959263 High temperature, high humidity oxidation resistance
09/25/1990US4959136 Method for making an amorphous aluminum-nitrogen alloy layer
09/25/1990US4958998 Glasslike carbon composite material and method of preparing the same
09/25/1990CA1274642A1 Polyester-polyurethane composition and use thereof
09/25/1990CA1274623A1 Disk drive optimized channel circuit
09/25/1990CA1274621A1 Automatic cassette supplying and reproducing apparatus
09/20/1990WO1990010932A1 Thick deposited cobalt platinum magnetic film and method of fabrication thereof
09/20/1990WO1990010931A1 Voice coil actuator
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