Patents
Patents for G11B 5 - Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor (87,826)
06/1993
06/08/1993CA1318975C Automatic servo gain calibration system for a disk drive
06/03/1993DE4240179A1 Magnetic tape recording assembly with erase head - has magnetic core with gap region coated to provide peak strength field flanked by null regions
06/02/1993EP0544642A2 Magnetic transducer head apparatus utilizing the magnetoresistance effect
06/02/1993EP0544302A2 A magnetic head holding apparatus for recording a magneto-optical disc
06/02/1993EP0544170A1 Thermostable iron oxide pigments, process for the preparation thereof and use thereof
06/02/1993EP0544014A1 Magnetic recording medium
06/02/1993CN1072792A Mildew-retarding magnetic disk and producing method thereof
06/01/1993US5216631 Microvibratory memory device
06/01/1993US5216561 Apparatus and method of manipulating sum, absolute difference and difference signals for suppressing medium-induced playback error in a magnetoresistive head assembly
06/01/1993US5216560 Stabilization of magnetoresistive sensors using the longitudinal field produced by the current in the contact leads
06/01/1993US5216559 Carrier structure for read/write heads
06/01/1993US5216553 Magnetic recording circuit having a storage feature dependent upon track location
06/01/1993US5215874 Silver halide photographic material having magnetic recording member
06/01/1993US5215833 Low in drop-out, heat roll stain; running durability; plural magnetic layers; specified dynamic friction coefficient
06/01/1993US5215803 Magnetic recording medium
06/01/1993US5215608 Adhesive used as "quick tack"; minimal application time; minimal electrical resistance
06/01/1993US5215420 Substrate handling and processing system
06/01/1993US5215009 Apparatus for calendering magnetic recording media
06/01/1993US5214840 Thin film magnetic head and the method of fabricating the same
06/01/1993CA1318690C Iodine-containing compound, preparation thereof and block copolymer comprising the same
05/1993
05/27/1993WO1993010531A1 Small size constant torque voice coil motor
05/27/1993WO1993010526A1 Magnetic recording medium and production method thereof
05/27/1993WO1993010525A1 Method and apparatus for thermal calibration of hard disk drive
05/27/1993WO1993010524A1 Composite type magnetic head
05/27/1993WO1993009900A1 Storage of metal particles
05/27/1993DE4235874A1 Non-magnetic substrate for magnetic head - comprises ceramic material of calcium oxide, titanium di:oxide and nickel oxide
05/27/1993DE4138700A1 Prodn. of ferromagnetic needle-like gamma iron (III) oxide - having high coercive field strength and used in prodn. of magnetic recording supports
05/27/1993DE4138267A1 Master and copy tape system for thermomagnetic copying - contg. magnetic pigment with higher Curie temp. in master tape and limited butyl palmitate concn.
05/26/1993EP0543690A1 Slide for magnetic recording
05/26/1993EP0543654A2 Positioning control system
05/26/1993EP0543637A2 Head core slider for rigid magnetic disk drive and method of fabricating the same
05/26/1993EP0543605A2 Helical scan devices for recording/reading high density data tracks
05/26/1993EP0543600A2 Biaxially oriented thermoplastic resin film
05/26/1993EP0543580A2 Magneto-optical recording apparatus capable of reproducing recording information while recording
05/26/1993EP0543434A1 Magnetic head with a system of coils compensating magnetic leakage
05/26/1993EP0543180A1 Camera system with latent and digital image capture
05/26/1993EP0543179A1 Photographic system with off-the-film exposure metering
05/26/1993EP0542910A1 Thermomagnetic recording system having high storage density and direct-overwrite capability.
05/26/1993CN1072527A Device of magnetic heads
05/25/1993US5214589 Throat height control during lapping of magnetic heads
05/25/1993US5214553 Magnetic contact recording head for operation with tapes of varying thicknesses
05/25/1993US5214552 Actuator for moving recording head and method for producing the same
05/25/1993US5214545 Signal erasing apparatus
05/25/1993US5214544 Apparatus for generating a track zero signal in a floppy disc driver without an optical track zero sensor
05/25/1993US5214515 Video signal recording/reproducing apparatus
05/25/1993US5212877 Method of and apparatus for drying coated substrates
05/25/1993CA1318398C Thin film head read recovery
05/25/1993CA1318397C Method and apparatus for driving a stepping motor
05/25/1993CA1318396C Tracking servo control for disc drive
05/25/1993CA1318395C Magnetic tape recording and/or reproducing apparatus with recorded channel indicator
05/23/1993WO1993010535A1 Disc device
05/23/1993CA2100157A1 Disk drive
05/23/1993CA2081141A1 Pulsed current resistive heating for bonding temperature critical components
05/19/1993EP0542651A2 Compliant support with mutually adhered web for transfer of information
05/19/1993EP0542635A1 Magnetic dispersion coating method and apparatus having high shear regions
05/19/1993EP0542563A2 Magnetic disc apparatus
05/19/1993EP0542540A2 Playback equalising circuit for a digital magnetic reproducing apparatus
05/19/1993EP0542511A2 Biaxially oriented polyethylene-2,6-naphthalenedicarboxylate film and process for the production thereof
05/19/1993EP0542176A2 Magneto-optical recording medium
05/19/1993EP0541943A2 Thin film magnetic head with narrow yoke
05/19/1993EP0541580A1 Precompensation and read equalization
05/19/1993DE4238400A1 Transverse magnetic recording material mfr. - uses sputtering process to form film of Neodymium-Iron-Boron on surface of non magnetic carrier.
05/19/1993CN1020820C Magnetooptical recording media and initialization methods thereof
05/19/1993CA2083080A1 Biaxially oriented thermoplastic resin film
05/18/1993US5212680 Mass storage device employing array of transducers "cocked" in relation to reciprocal movement axis
05/18/1993US5212657 Kinetofrictional force testing apparatus
05/18/1993US5212615 Data storage device having stretched and distended magnetic media surface
05/18/1993US5212613 Rotary head drum
05/18/1993US5212612 Magnetic head
05/18/1993US5212611 Integral read/write recording head with dual gap dimension
05/18/1993US5212610 Scanning device for magnetic tape with special bearing arrangement for scanner shaft
05/18/1993US5212609 Magnetoresistive head
05/18/1993US5212608 Head slider for magnetic disk drive, having side rails with gradually increasing width forming a shallow recess
05/18/1993US5212604 Method and apparatus for processing positioning signals in a record
05/18/1993US5212603 Tracking control means for a multi-channel reproducing apparatus
05/18/1993US5212602 Magnetic head having fuse within head case
05/18/1993US5212561 Noise killing circuit for video tape duplicating apparatus
05/18/1993US5212417 Stepping motor for driving head carriage and disc drive unit comprising such motor
05/18/1993US5212388 Method for detecting tracking error in magnetic tapes with using an X-Y stage calibration means
05/18/1993US5212019 Magnetic recording medium having a magnetic layer containing ferromagnetic metal powder, binder, fatty acid ester, and a specified branched chain fatty acid
05/18/1993US5212006 High density magnetic recording medium
05/18/1993US5211770 Magnetic recording powder having a high coercive force at room temperatures and a low curie point
05/18/1993US5211734 Method for making a magnetic head having surface-reinforced glass
05/18/1993US5210929 Method of making a ferrite capped Winchester-style slider
05/18/1993CA1317906C Magnetic recording material
05/18/1993CA1317749C Process for producing magnetic head of floating type
05/13/1993WO1993009533A1 Slider air bearing surface with angled rail configuration
05/13/1993WO1993009532A1 Unshielded magnetoresistive head with multiple pairs of sensing elements
05/13/1993WO1993009480A1 Low acoustic noise seeking method and apparatus
05/13/1993WO1993009166A1 Polyethylene 2,6-naphthalenedicarboxylate film
05/13/1993WO1993008909A1 In situ use of gelatin in the preparation of uniform ferrite particles
05/13/1993CA2121252A1 In situ use of gelatin in the preparation of uniform ferrite particles
05/12/1993EP0541372A1 Method and apparatus for recording signals
05/12/1993EP0541156A1 Magnetic head having a core portion of polycrystalline MnZn ferroferrite
05/12/1993EP0541072A2 Laminated polyester film for magnetic recording medium
05/12/1993EP0541039A2 Device for gathering information
05/12/1993EP0540540A1 Vaterite and production method.
05/12/1993EP0214175B1 Vertical magnetic recording arrangement
05/12/1993CN2133030Y Recorder with normal speed four-surface for common tap
05/12/1993CN1072037A Magnetic head cleaning device for video recording and playing machine