| Patents for G11B 5 - Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor (87,826) |
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| 03/21/1990 | EP0359154A2 Process for producing a magnetic recording medium for perpendicular recording |
| 03/21/1990 | EP0359114A2 Magneto-optical recording medium |
| 03/21/1990 | EP0359019A2 Tracking control circuit of herical scanning magnetic tape apparatus |
| 03/21/1990 | EP0358775A1 Photomagnetic recording method |
| 03/21/1990 | EP0119200B1 Video recording and reproducing apparatus for controlling the transport of the tape |
| 03/21/1990 | CN2054930U Magnetic head slider unit of microcomputor cassette answer recorder |
| 03/21/1990 | CN1040697A Perpendicular magnetic recording medium, method for manufacturing thereof and method for recording and reproducing thereof |
| 03/21/1990 | CN1007240B Preparation of ferromagnetic chromium dioxide |
| 03/20/1990 | US4910629 Magnetic head |
| 03/20/1990 | US4910622 Over write capable magnetooptical recording medium |
| 03/20/1990 | US4910621 Magnetic head device having sloped sliding surface which is formed thermally curved |
| 03/20/1990 | US4910617 Disk drive head positioning servo system utilizing encoded track zone information |
| 03/20/1990 | US4910616 Servo track centering for magnetic disc read/write head |
| 03/20/1990 | US4910615 Capacitance sensor for detecting the position of magnetic rotating heads |
| 03/20/1990 | US4910394 Transducer for converting a signal to read out data and method for forming the same |
| 03/20/1990 | US4910089 Magnetic recording medium |
| 03/20/1990 | US4910068 Polyamide substrate; polyimide containing inorganic particles |
| 03/20/1990 | US4909865 Preimpregnating with organic solvent; heating while passing oxygen containing gas |
| 03/15/1990 | DE3830083A1 Head drum arrangement for a recorder |
| 03/14/1990 | EP0357889A2 Demagnetization of thin film magnetic recording transducers utilizing a decreasing AC current |
| 03/14/1990 | EP0273330B1 Magnetic-recording medium |
| 03/14/1990 | CN1040451A Methods for forming magnetic coatings using trioxane and magnetic recording media having such coatings |
| 03/13/1990 | US4908727 Disk with substrate of alumina silicate resin glass |
| 03/13/1990 | US4908724 Dual gap cross-field magnetic recording head with single gap signal excitation |
| 03/13/1990 | US4908722 Digital magnetic recording/reproduction apparatus and method |
| 03/13/1990 | US4908561 Servo amplifier circuit |
| 03/13/1990 | US4908216 Lower mold part with disk shaped recess, upper mold part, clamp, upper part being transparent material which transmits rays |
| 03/08/1990 | WO1990002402A1 Training method and apparatus with audio and digital signals recording and play back |
| 03/08/1990 | WO1990002399A1 Thin-film magnetic head |
| 03/08/1990 | WO1990002398A1 Magnetic head |
| 03/08/1990 | DE3927661A1 Reduction of cylinder size in digital audio tape equipment - using upper and lower drum of reduced dia. with heads mounted on reduced dia. cylinder |
| 03/08/1990 | DE3922747A1 Doped alkaline earth metal and lead ferrite prodn. |
| 03/08/1990 | DE3913630A1 Verfahren zur herstellung eines magnetischen aufzeichnungsmediums A process for producing a magnetic recording medium |
| 03/07/1990 | EP0357294A2 Compensation circuit for nullifying differential offset voltage and regulating common mode voltage of differential signals |
| 03/07/1990 | EP0357236A2 A batch fabrication process for magnetic heads |
| 03/07/1990 | EP0357203A2 Electrical guide for tight tolerance machining |
| 03/07/1990 | EP0357044A1 Device for controlling an access operation of an information recording and reproducing device |
| 03/07/1990 | EP0357014A2 Linear pulse motor having means for locking up an armature thereof |
| 03/07/1990 | EP0356959A2 Tracking error detecting circuit |
| 03/07/1990 | EP0356939A1 Device for controlling an access operation of an information recording and reproducing device |
| 03/07/1990 | EP0356938A2 Rotary head assembly for substantially concurrent recording and monitoring of data on a magnetic tape cassette or the like |
| 03/07/1990 | EP0179920B1 Apparatus for recording data signals |
| 03/07/1990 | EP0115516B1 Water-based magnetic coating composition |
| 03/07/1990 | CN2054194U Flexible flat cable for automatic returning magnetic head |
| 03/07/1990 | CN1040281A Tape dubbing apparatus |
| 03/07/1990 | CN1007095B Magnetic recording/reproducing device |
| 03/06/1990 | USH752 Magnetic recording medium |
| 03/06/1990 | US4907115 Super conducting thin-film magnetic head including a magnetoresistive element |
| 03/06/1990 | US4907114 Mangeto-resistive type read head |
| 03/06/1990 | US4907113 Three-pole magnetic recording head |
| 03/06/1990 | US4907112 Recording/reproducing head providing evenly distributed contact pressure with magnetic medium |
| 03/06/1990 | US4907109 Magnetic disc drive system having automatic offset and gain adjustment means |
| 03/06/1990 | US4907108 Delayed-action motor control circuit for reducing load current |
| 03/06/1990 | US4907107 Method for positioning a magnetic head in accordance with digital peak values corresponding to servo data and magnetic disk positioning apparatus for the same |
| 03/06/1990 | US4907104 Rotatable head type digital magnetic recording and reproducing device having a plurality of operating modes |
| 03/06/1990 | US4907103 Low CnO2 loading, high coercivity thermomagnetic tape duplication |
| 03/06/1990 | US4907102 Magnetic recording playback |
| 03/06/1990 | US4907100 Readout circuit in magnetic recording device |
| 03/06/1990 | US4906518 Light filler material having damping function and composite material thereof |
| 02/28/1990 | EP0356155A2 Magnetic head |
| 02/28/1990 | EP0356126A2 Recording head to minimize undershoots in readback pulses |
| 02/28/1990 | EP0356031A2 A read-after-write magnetic head |
| 02/28/1990 | EP0355766A2 Vacuum deposition apparatus and process for preparing magnetic recording medium |
| 02/28/1990 | EP0355755A2 Chromium dioxide material, process for its preparation and magnetic recording material containing this chromium dioxide material |
| 02/28/1990 | EP0355721A2 Reproducing apparatus with tracking control means |
| 02/28/1990 | EP0355692A2 Rotary actuator for positioning magnetic heads in a disk drive |
| 02/28/1990 | EP0355162A1 Magnetic recording medium |
| 02/28/1990 | CN2053780U Self-returning and rise-fall area device of warm-disk driver's magnetic head |
| 02/28/1990 | CN2053779U Rotary magnetic head apparatus |
| 02/28/1990 | CN2053778U Separated accompaniment tape singing machine |
| 02/27/1990 | US4905111 Damping material of an improved formulation for use on a magnetic head |
| 02/27/1990 | US4905109 Process for optimizing head position to overcome disk misclamping and imperfections |
| 02/27/1990 | US4905108 Rotary head type reproducing apparatus with tracking control function |
| 02/27/1990 | US4905107 Torsion transducer for magnetic storage disk drives |
| 02/27/1990 | US4905104 Rotary head type digital signal recording and/or reproducing apparatus for recording and/or reproducing with a variable speed |
| 02/27/1990 | US4905103 Magnetic recording apparatus |
| 02/27/1990 | US4904938 Method and apparatus for testing characteristics of a floppy disc and a floppy disc drive |
| 02/27/1990 | US4904543 Compositionally modulated, nitrided alloy films and method for making the same |
| 02/27/1990 | US4904530 Ferrite particles; high information density |
| 02/27/1990 | US4904349 Methods for producing optomagnetic recording media and systems for their use |
| 02/22/1990 | WO1990001850A1 Dual deck videocassette recorder system |
| 02/22/1990 | WO1990001771A1 Double-sided magnetic recording device supporting two transducers in fixed relation |
| 02/22/1990 | WO1990001769A1 Overwrite type magnetooptical recording apparatus |
| 02/22/1990 | DE3828270A1 Duennfilm-magnetkopf Duennfilm-magnetic head |
| 02/22/1990 | DE3828020A1 Arrangement for reproducing audio signals |
| 02/21/1990 | EP0355044A2 Magnetoresistive read transducer assembly |
| 02/21/1990 | CN1039918A Magnetic tape being information carrier |
| 02/20/1990 | US4903158 MR head with complementary easy axis permanent magnet |
| 02/20/1990 | US4903156 Magnetic recording and/or reproducing apparatus having a head support mechanism for suppressing vibration of magnetic heads |
| 02/20/1990 | US4903151 Head positioning system for positioning a multiple head with respect to data and servo trasks of a recording medium |
| 02/20/1990 | US4903150 Multitrack magnetic recording and reproducing apparatus and method of controlling tracking of multitrack magnetic heads |
| 02/20/1990 | US4902971 Magnetic head and disc tester employing pivot arm on linearly movable slide |
| 02/20/1990 | US4902585 Recording medium and method of producing the same |
| 02/20/1990 | US4902584 Durability, corrosion resistance |
| 02/20/1990 | US4902583 Thick deposited cobalt platinum magnetic film and method of fabrication thereof |
| 02/20/1990 | US4901430 Method of mounting a magnetic head |
| 02/14/1990 | EP0354398A2 Iron-based acicular alloy powder, process for its production and its use |
| 02/14/1990 | CN2052928U Tape disk for cassette video tape |
| 02/14/1990 | CN2052927U Magnetic head support device for cassette recorder |
| 02/14/1990 | CN1006831B Ferro-silicon-aluminium magnetic film and its manufacturing method and use |