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)
03/1989
03/28/1989US4816128 Process for producing substrate member for magnetic recording disc
03/28/1989US4816127 Magnetic recording medium, sputtering
03/28/1989US4816119 Process for production of magnetic media
03/28/1989US4815197 Process for producing magnetic head
03/28/1989CA1251886A1 Carboxylic acid grafted phenoxy resins
03/28/1989CA1251860A1 Magnetic record carrier and method of making it
03/23/1989WO1989002644A1 Least squares method and apparatus for determining track eccentricity of a disk
03/23/1989DE3736024C1 Demagnetising device
03/23/1989DE3730969A1 Magneto-optical store with a magnetic head integrated into the scanning unit
03/23/1989DE3727135A1 Measuring arrangement for video heads
03/22/1989EP0308254A2 Magnetic disk memory
03/22/1989EP0308201A1 Method of forming a sputtering target for use in producing a magneto-optic recording medium
03/22/1989EP0307810A2 Magnetic-recording medium
03/22/1989EP0307586A1 An improved automatic head position tracking servo for a rotary head magnetic tape recording and reproducing apparatus
03/22/1989EP0307554A1 Amorphous magneto optical recording medium
03/22/1989CN1031903A 磁性记录介质 The magnetic recording medium
03/21/1989US4814928 Information recording disk provided with distinguishing mark
03/21/1989US4814921 Multilayered magnetic films and thin-film magnetic heads using the same as a pole
03/21/1989US4814920 Magnetic head with a slider
03/21/1989US4814919 Soft-film-bias type magnetoresitive device
03/21/1989US4814918 Multitrack magnetic head having magnetically coupled transducer elements
03/21/1989US4814917 Rotary magnetic head device
03/21/1989US4814916 Magnetic disc memory device
03/21/1989US4814915 Zirconim, aluminum, yttrium, magnesium and cerium oxides
03/21/1989US4814910 Small sized magnetic recording and reproducing apparatus with improved rotating magnetic head
03/21/1989US4814909 Data transducer position control system for rotating disk data storage equipment
03/21/1989US4814908 Thermo servo for track centering on a disk
03/21/1989US4814907 Method and apparatus for maintaining constant flying height via magnetic interaction
03/21/1989US4814906 Magnetic head slider
03/21/1989US4814902 Apparatus for recording and/or reproducing with video and multiple audio rotary heads
03/21/1989US4814899 Tape transporting device
03/21/1989US4814371 Silica with silanol groups on surface, noncombusitble binder, source of water molecules
03/21/1989US4814239 Vertical magnetic recording medium and method of manufacturing the same
03/21/1989US4814053 Sputtering target and method of preparing same
03/21/1989US4813782 Method and apparatus for measuring the floating amount of the magnetic head
03/21/1989CA1251558A1 Method of magnetically recording video signals and an apparatus therefor
03/21/1989CA1251360A1 Magnetic recording medium and production processes thereof
03/16/1989DE3829399A1 Magnetic recording medium
03/16/1989DE3829040A1 Kopftraegertrommel-steuereinrichtung Kopftraegertrommel-control device
03/15/1989EP0306964A1 Recording apparatus
03/15/1989EP0306960A2 Magnetic card
03/15/1989EP0306817A2 Magnetic recording and reproducing apparatus of rotating head type
03/15/1989EP0306715A1 Control system of magnetic head positioners of a multipositioner magnetic disk storage apparatus
03/15/1989CN1003617B Tracking control device for recording and/or reproducing signal
03/14/1989US4812939 Magnetic recording disc having tensioned and elastically-supported recording surface
03/14/1989US4812935 Apparatus for damping head positioners for disc drives
03/14/1989US4812934 Actuator for memory storage device
03/14/1989US4812933 Magnetic disc recording and reproducing device
03/14/1989US4812930 Tape guide arrangement for a helical scan type magnetic record reproduction device
03/14/1989US4812929 Head positioning mechanism for rotating disk data storage system
03/14/1989US4812928 Stepper motor data recovery method using a magnetic hysteresis based stepping algorithm
03/14/1989US4812926 Automatic tracking device for VCR with capstan motor controlled by color signal
03/14/1989US4812923 Tape inspection apparatus
03/14/1989US4812921 Sound field expansion system for a video tape recorder
03/14/1989US4812632 Portable magnetic card reading and writing apparatus with verification of constant and user supplied data
03/14/1989US4812369 Magnetic recording medium
03/14/1989US4812358 Magnetic recording medium
03/14/1989US4812351 Magnetic recording medium
03/14/1989US4812330 Process for producing a magnetic recording medium
03/14/1989US4811476 Method of manufacturing a magnetic transducer including a plurality of heads
03/09/1989WO1989002149A1 Process for production of magnetic media
03/08/1989EP0305819A2 Ferromagnetic metal powder and process for preparation thereof
03/08/1989EP0305722A1 An improved automatic head position tracking servo for a rotary head magnetic tape recording and reproducing apparatus
03/08/1989EP0305666A1 Amorphous magneto optical recording medium
03/08/1989EP0305498A1 Crash-prevention for disk drive positioning system.
03/08/1989EP0305474A1 Voice coil linear actuator.
03/08/1989CN2033937U Dual purpose cassette tape for cleaning and recording
03/08/1989CN2033936U Recorder for mini-synthesizer
03/08/1989CN1031617A Magnetic tape recorder
03/07/1989US4811325 High-speed reproduction facility for audio programs
03/07/1989US4811149 Method and apparatus for cleaning operating components of a video player/recorder
03/07/1989US4811148 Alloy magnetic recording head
03/07/1989US4811147 Magnetic head incorporating a glass composition of barium oxide and phosphorous pentaoxide
03/07/1989US4811146 Composite magnetic head
03/07/1989US4811145 Head device of tape player
03/07/1989US4811144 Magnetic recording head motion translation apparatus for head/media evaluation systems
03/07/1989US4811143 Head supporting mechanism for maintaining close operative relationship between magnetic heads and a flexible disk
03/07/1989US4811142 Magnetic head for vertical magnetic recording and method of producing same
03/07/1989US4811141 Head mounting in magnetic storage devices
03/07/1989US4811140 Magnetic data transfer apparatus having improved transducer coil arrangement
03/07/1989US4811139 Device for recording and reproduction having head moving means
03/07/1989US4811135 Tri-phase servo pattern for providing information for positioning the transducers of a magnetic disk storage drive
03/07/1989US4811133 Electronic still video record/play head positioner having both open and closed loop positioning control
03/07/1989US4811126 Recording/reproducing system for a magnetic recording medium including synchronization detecting circuit
03/07/1989US4811122 Magnetic recording/reproducing apparatus which accomodates different tape types
03/07/1989US4811121 Magnetic recording and reproducing system using preceding and lagging groups of rotary heads to permit coincident timing for reproduced video and audio signals
03/07/1989US4811117 Video tape recorder for recording and reproducing two-channel component signals of a video signal on a magnetic tape using two pair of heads and alternately delayed signals
03/07/1989US4810592 Thin film magnetic recording medium and producing method of the same
03/07/1989US4810555 Radiation-curable resin binder, plates, flakes
03/07/1989US4810524 Plasma polymerization
03/07/1989US4810435 Radiation polymerization
03/07/1989US4810402 Homogeneous mixture of required cations with thermally decomposable anion
03/07/1989US4810347 Penning type cathode for sputter coating
03/07/1989US4809639 Coating device
03/07/1989US4809427 Method for assembling a magnetic head supporting mechanism of a flexible disk drive apparatus
03/02/1989DE3825357A1 Magnetic storage device with a tracking control system
03/01/1989EP0305069A2 A process for producing a ferromagnetic metal powder having an oxidized coating
03/01/1989EP0304992A2 Method for writing binary information in a magnetooptical memory layer and device for recording according to this method
03/01/1989EP0304927A2 Perpendicular magnetic recording medium
03/01/1989EP0304912A2 Thin-film magnetic head and method of fabricating the same
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