Patents
Patents for G11B 5 - Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor (87,826)
05/1987
05/26/1987US4669005 Reproducing apparatus
05/26/1987US4669004 High capacity disk file with embedded sector servo
05/26/1987US4669003 Method and apparatus for eliminating apparent offset in the servo code in a magnetic disc drive
05/26/1987US4669002 Multiple magnetic head rotary transducer drum for simultaneous recording and reproducing
05/26/1987US4668913 Constant flux magneto resistive magnetic reluctance sensing apparatus
05/26/1987US4668587 Magnetic recording medium
05/26/1987US4668586 Magnetic recording media
05/26/1987US4668568 Magnetic recording medium
05/26/1987US4668526 Method of making magnetic head for computers
05/26/1987US4668414 Process for producing acicular particles containing an iron carbide
05/26/1987US4668355 Solutions for extracting magnetic particles
05/26/1987US4667524 Carriage driving machanism
05/21/1987WO1987003130A1 Disk drive control system
05/21/1987WO1987003129A1 Binarily related variable rate recorder
05/21/1987DE3540886A1 Magnetic head support for a magnetic disc store
05/20/1987EP0222647A1 Raising device for a magnetic writing and/or reading head slider in a disc memory apparatus
05/20/1987EP0222564A2 Magnetic recording medium
05/20/1987EP0222459A2 Robotic disk handler system and method
05/20/1987EP0222458A2 Disk and plug
05/20/1987EP0222183A2 Thin film magnetic head
05/20/1987EP0222139A2 Sealed actuator assembly
05/20/1987EP0222071A2 Twin track vertical magnetic recording servo control method and apparatus with offset voltage compensation
05/20/1987EP0222054A2 Mechanism for moving recording heads across computer tapes
05/20/1987EP0093199B1 Diffusion bonding of dissimilar ceramics
05/19/1987US4667260 Thin film vertical recording head
05/19/1987US4667259 Non-magnetic part in magnetic head assembly
05/19/1987US4667258 Disk drive with multiple head cartridge
05/19/1987US4667242 Automatic gain control circuit
05/19/1987US4667167 Circuit for automatic gain control
05/19/1987US4666789 Magneto-optic recording medium
05/19/1987US4666788 Perpendicular magnetic recording medium, method for producing the same, and sputtering device
05/19/1987US4666784 Polyurethane layer with a metal sulfonate group
05/19/1987US4666783 Magnetic recording media
05/19/1987US4666781 Magnetic recording media
05/19/1987US4666773 Ferromagnetic particles are given magnetic anisotropy vertical to surface
05/19/1987US4666770 Multilayer, nonmagnetic supports
05/19/1987US4666769 Undercoating on substrate, magnetic layer
05/19/1987US4666759 Data recording medium
05/19/1987US4666754 Multilayer, nonmagnetic substrate, overcoatings
05/19/1987US4666554 Method of manufacturing a sensor having a magnetic field sensitive element
05/19/1987US4665612 Method of manufacturing a glass-bonded magnetic head having diffusion barriers
05/13/1987EP0221762A2 Transport for tape cartridge with leader block
05/13/1987EP0221740A2 Servo data demodulators
05/13/1987EP0221697A2 Magnetic head of amorphous magnetic alloy and process for producing the same
05/13/1987EP0221583A2 Method of manufacturing magnetic head cores
05/13/1987EP0221540A2 Magnetic transducer head utilizing magnetoresistance effect
05/13/1987EP0221309A1 Metallic magnetic recording medium
05/12/1987US4665454 Data transfer apparatus for use with a magnetic disk cartridge
05/12/1987US4665453 Floppy disc recording and/or reproducing apparatus
05/12/1987US4665451 Servo with impulse relay for a magnetic-tape-cassette apparatus
05/12/1987US4665450 Helical scan type magnetic recording and/or reproducing apparatus
05/12/1987US4665449 Rotating head type reproducing apparatus
05/12/1987US4665447 Method and apparatus for recording a digital information signal and tracking pilot signals at different locations in the track
05/12/1987US4665443 Signal recording and reproducing apparatus
05/12/1987US4664981 Excellent electromagnetic properties
05/12/1987US4664979 Durable magnetic tapes
05/12/1987US4664977 Opto-magnetic recording medium
05/12/1987US4664976 Magnetic recording medium comprising a protective carbon nitride layer on the surface thereof
05/12/1987US4664975 Magnetic recording media comprising an antistatic agent-containing resin layer provided between a support and a magnetic recording layer
05/12/1987US4664965 Magnetic recording medium
05/12/1987US4664964 Magnetic recording medium
05/12/1987US4664963 Magnetic recording medium and production processes thereof
05/12/1987US4664947 Multi-layer process for cobalt treatment of ferromagnetic oxides
05/12/1987US4664831 Preparation of finely divided ferrite powders
05/12/1987US4664734 Process for producing a magnetic recording medium
05/12/1987US4663836 Method of manufacturing a magnetic head
05/12/1987CA1221764A1 System for the reproduction of signals stored on a magnetic tape
05/06/1987EP0220812A2 High capacity disc drive
05/06/1987EP0220740A2 Process for protecting and lubricating surfaces subjected to friction and wear
05/06/1987EP0220597A2 Thin film vertical magnetic recording medium with a substrate, an intermediate layer and a magnetisable layer
05/06/1987EP0220586A2 Fine isometric hexaferrite pigments with a W structure, process for preparing same and use thereof
05/06/1987EP0220580A2 Magnetic recording medium
05/06/1987EP0220466A1 Apparatus for recording video signals on rotary recording medium with appropriate angular phase in rapid response to start of rotation
05/06/1987EP0220385A1 Simplified, shielded twin-track read/write head structure
05/06/1987EP0220382A2 Disk incremental rewrite
05/06/1987EP0220272A1 Slider assembly with dynamically positionable transducer
05/06/1987EP0220240A1 Edge guided magnetic tape tracking
05/05/1987US4663686 Head cleaning cartridge for magnetic disk drive
05/05/1987US4663685 Magnetoresistive read transducer having patterned longitudinal bias
05/05/1987US4663684 Magnetic transducer using magnetoresistance effect
05/05/1987US4663683 Magnetoresistive thin film head
05/05/1987US4663682 Apparatus for loading and unloading a magnetic head assembly on a magnetic recording surface
05/05/1987US4663678 System for writing and reading digital data interspersed with analog audio frequency data on magnetic recording tape
05/05/1987US4663676 Return to zero vertical magnetic recording system
05/05/1987US4663607 Magnetoresistive element
05/05/1987US4663555 Method and apparatus for controlling a bimorph leaf which supports a deflectable head
05/05/1987US4663304 Acid-treated catalysts for olefin conversion and method for preparing the catalysts
05/05/1987US4663246 Magnetic recording medium
05/05/1987US4663242 Method for producing a metal alloy strip
05/05/1987US4663217 Magnetic recording medium
05/05/1987US4663209 Polyester support, ferromagnetic particles
05/05/1987US4663193 Sputtering in nitrogen atmosphere
05/05/1987US4663184 Magnetic recording media
05/05/1987US4662985 Method of smoothing out an irregular surface of an electronic device
05/05/1987CA1221455A1 Magnetic transducer positioning apparatus
05/05/1987CA1221454A1 Continuous-plus-embedded servo data position control system for magnetic disk device
05/05/1987CA1221453A1 Apparatus for recording a video signal
05/05/1987CA1221452A1 Method and apparatus for recording a digital information signal
04/1987
04/30/1987DE3633597A1 PCM signal recording and reproducing apparatus
04/30/1987DE3538290A1 Arrangement for the magnetic recording of pulses