Patents
Patents for G11B 5 - Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor (87,826)
07/1992
07/21/1992US5132179 Magnetic recording medium comprising plural magnetic layers
07/21/1992US5132173 Magnetic recording medium having a silicon oxide protective layer with an electrical specific resistance of from 3.3×1013 to 5.0×15 ohm.cm
07/21/1992US5132158 Abrasion resistance
07/21/1992US5132132 Coating two magnetic coating solutions on continuously traveling support by use of two dies each having two lips in confronting relation to each other through slits for supplying coating solutions, second lips of each die having curved tops
07/21/1992US5131995 Method of manufacturing titanium magnetic disk substrate
07/21/1992US5131977 Base plate for recording disc and a method for its manufacture
07/16/1992DE4200350A1 Abrasive coated belts - comprise flexible substrate and abrasive agent layer contg. three types of abrasive grains of specified sizes and hardnesses
07/15/1992EP0494793A1 Magnetic recording medium with improved backside coating
07/15/1992EP0494703A2 Particles containing iron carbide
07/15/1992EP0494678A1 Method for manufacturing magnetic recording medium
07/15/1992EP0494640A2 Rotary head assembly
07/15/1992EP0484433A4 Architecture for 2-1/2 inch diameter single disk drive
07/15/1992CN1062805A Manganese bismuth adding rare-earth element magneto-optical film medium
07/14/1992US5130878 Thin film magnetic head comprising a protective layer
07/14/1992US5130877 Thin film head on ferrite substrate with inclined top pole
07/14/1992US5130876 Solid state scanning transducer that utilizes low flux densities
07/14/1992US5130875 Multichannel magnetic head having a plurality of head chips fixed on a common head base
07/14/1992US5130874 Disk file actuator with heat dissipation and simplified component mounting
07/14/1992US5130871 Disk drive with rotatable diamond-shaped actuator arm
07/14/1992US5130868 Apparatus and method for positioning a transducer for recording, reproducing or erasing information on a medium
07/14/1992US5130867 Magnetic disk unit utilizing a predetermined range for the frictional coefficient between the magnetic head and the recording medium
07/14/1992US5130866 Method and circuitry for in-situ measurement of transducer/recording medium clearance and transducer magnetic instability
07/14/1992US5130861 Method and apparatus for reproducing a digital video signal
07/14/1992US5130745 Film information exchange system using dedicated magnetic tracks on film
07/14/1992US5130202 Magnetic recording medium containing an isocyanate-free branched thermoplastic polyurethane binder resin with urea groups at the chain ends
07/14/1992CA1305252C Overwriting system for magneto-optical recording
07/09/1992WO1992011636A1 Device for controlling positioning of head of disc drive and method of controlling the same
07/09/1992WO1992011630A1 Rigid disk drive with dynamic head loading apparatus
07/09/1992WO1992011629A1 Rotary inertial latch for disk drive actuator
07/09/1992WO1992011542A1 Media flaw detection apparatus for a magnetic disc drive
07/09/1992DE4200198A1 Magnetic recording medium based on iron@ powder contg. cobalt - concentrated at surface of particles for good dispersibility, squareness ratio and alignment
07/09/1992DE4141181A1 Magnetic recording medium with improved recording density - uses thin film of cobalt containing oxygen with the main magnetic axis at 20 to 80 degrees with the horizontal deposited by evaporation
07/09/1992CA2058656A1 Magnetic head
07/08/1992EP0494095A2 Particles containing iron carbide
07/08/1992EP0493902A2 Magnetic head slider and method for making same
07/08/1992EP0493885A2 Slider units for information recording devices and methods of making them
07/08/1992CN2109615U Single sound track recorder imitating stereophonic adjusting circuit
07/08/1992CN1062630A Arrangement for recording-clock run-in codewords at beginning of track on magnetic record carrier
07/07/1992US5128822 Configuration for negative pressure air bearing sliders
07/07/1992US5128821 Flying head slider and magnetic disk unit employing same
07/07/1992US5128813 Thermal compensated head positioner servo for disk drive
07/07/1992US5128812 Data transducer positioning system for rotating disk data storage apparatus
07/07/1992US5128811 Apparatus for reproducing a binary digital signal, comprising a read head having a specially selected gap length
07/07/1992US5128568 Self-biasing timing circuit for achieving long time delays
07/07/1992US5128435 Magnetic recording medium based on epoxy resins modified by isocyanates with poly(perfluoroether) backbones
07/07/1992US5128216 Lubricants for magnetic media
07/07/1992US5128215 Styrene-butadiene
07/07/1992US5128206 Magnetic recording supports
07/02/1992DE4142052A1 Magnetic recording material - has non-magnetic substrate with two ferromagnetic layers of specified coercivity relationship and residual flux density relationship
07/02/1992DE4141651A1 Tracking data securing for variable speed magnetic tape - includes deduction of deviation data function from comparison of instantaneous with normal speed track following data
07/01/1992EP0493114A2 Magnetic recording medium
07/01/1992EP0493035A1 Servo control method for magnetic disk apparatus
07/01/1992EP0492963A2 Heterocyclic thione functional polyurethane polymers and their use in magnetic recording media
07/01/1992EP0492888A2 Thin film magnetic head for use with magneto-optic disk drive
07/01/1992EP0492848A2 Transducer head and method of making same
07/01/1992EP0492775A2 Method and Apparatus for positioning head on target cylinder of disk
07/01/1992EP0492774A2 Method and system for correcting offset of head position signal
07/01/1992EP0492762A1 Method & apparatus for providing uniaxial anisotropy in magnetic recording disks
07/01/1992EP0492704A1 Arrangement for recording clock run-in codewords in a track on a magnetic record carrier
07/01/1992EP0492648A2 High density magnetic recording medium
07/01/1992EP0492568A1 Magnetic recording medium
07/01/1992EP0492441A1 Magnetic recording medium
07/01/1992EP0492419A2 Viterbi decoding system including variable-order equalizer
07/01/1992EP0492325A2 Method and circuit for the regeneration of a binary bitstream from a ternary signal
07/01/1992EP0491920A1 Method for producing write and/or read heads for magnetic recording.
07/01/1992EP0338063B1 Magnetic recording/reproducing head and process for making it.
07/01/1992CN2108979U Magnetic head and drum cleaning sheet for videocorder
07/01/1992CN1062425A Magnetoresistive sensor based on spin valve effect
06/1992
06/30/1992US5126990 Method of evaluating a storage medium by recirculating a test sample of a signal
06/30/1992US5126986 Over write capable magnetooptical recording medium, recording method and apparatus using the same
06/30/1992US5126985 Method of recording information on a record carrier of the thermomagnetic type, and device for carrying out the method
06/30/1992US5126984 External magnetic field generating device for optical magnetic disk apparatus
06/30/1992US5126919 Cooling system for an electronic circuit device
06/30/1992US5126907 Thin film magnetic head having at least one magnetic core member made at least partly of a material having a high saturation magnetic flux density
06/30/1992US5126906 Rotary magnetic head device with rotary transformer having high coupling coefficient
06/30/1992US5126904 Magnetic head supporting structure with thick and thin portions for an information recording apparatus
06/30/1992US5126903 Combination of a magnetic head and a magnetic head supporting device
06/30/1992US5126902 Floating type magnetic head
06/30/1992US5126901 Thin film magnetic head having a narrow upper surface
06/30/1992US5126897 Magnetic recording/reproducing apparatus capable of reducing a setting time in a head positioning control mode
06/30/1992US5126896 Recording or reproducing apparatus having a head positioning, motor power control circuit
06/30/1992US5126895 Shockproof data transducer position control system for rotating disk data storage apparatus
06/30/1992US5126893 Digital signal reproducing circuit
06/30/1992US5126892 Rotating head type reproducing apparatus for reproducing an information signal from a record bearing medium having many parallel recording tracks and pilot signals of different frequencies
06/30/1992US5126891 Magnetic recording apparatus
06/30/1992US5126232 Photolithography using positive photoresis including post bake and flood exposure
06/30/1992US5126215 Excellent electromagnetic characteristics and running durability at high density recording
06/30/1992US5126202 Magnetic recording medium containing ferro magnetic powder, polar group containing resins in a specific ratio and carbon black of a specific size range
06/30/1992US5126179 Titanium, aluminum and oxygen alloy from cold rolling; wear resistant, for computers
06/30/1992US5126027 Uniform heating of both surfaces of base plates gives uniform physical properties; magnetic recording media, disks
06/30/1992CA1304499C Magnetoresistive read transducer with insulator defined trackwidth
06/28/1992CA2033271A1 Tape cassette
06/25/1992WO1992010833A1 Bobbin for supporting disk drive actuator coil
06/25/1992WO1992010832A1 Capillary attraction magnetic head and method of making
06/25/1992WO1992008165A3 Transparent magnetic recording layers and photographic elements containing the same
06/24/1992EP0491563A2 Information recording/reproducing apparatus
06/24/1992EP0491382A2 Magnetic head base
06/24/1992EP0491350A2 Apparatus and method for transducer crosstalk cancellation in a disk drive system
06/24/1992EP0491327A2 Data protection method
06/24/1992EP0491264A1 Magnetic disc