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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07/14/1987 | US4680211 Recording disks |
07/14/1987 | US4680197 Method of manufacturing perpendicular magnetic recording floppy disk |
07/14/1987 | US4680130 Preparation of finely divided isotropic ferrite powders having the spinel structure |
07/14/1987 | CA1224268A1 Method of recording information in a magneto-optical record carrier, apparatus for carrying out the method, and magneto-optical record carrier for use in an apparatus for carrying out the method |
07/08/1987 | EP0228240A1 Magnetic tape recording/reproducing apparatus |
07/08/1987 | EP0227920A2 Magnetic recording apparatus |
07/08/1987 | EP0227845A1 Method and apparatus for controlling the flying height of the head in a magnetic storage unit |
07/08/1987 | CN86201240U Automatic multipurpose card-reading machine |
07/08/1987 | CN86108777A Method and apparatus for magnetic transducing |
07/08/1987 | CN86108660A Driving device for disk drive |
07/07/1987 | US4679185 Pivotal-arm device for a disc scanning unit |
07/07/1987 | US4679183 Sound recording apparatus for blank films and tapes |
07/07/1987 | US4679108 Portable playback system with active tape drive tensioning feature |
07/07/1987 | US4679107 Magnetic transducer head utilizing magnetoresistance effect |
07/07/1987 | US4679105 Head positioning assembly for a disk drive |
07/07/1987 | US4679104 Method and arrangement for positioning a magnetic head to various tracks of a magnetic tape |
07/07/1987 | US4679103 Digital servo control system for a data recording disk file |
07/07/1987 | US4679102 Method and means for parking read/write heads in a disc drive using the back-EMF of the spindle motor to operate a stepper motor |
07/07/1987 | US4679100 Rotary head type magnetic recording and reproducing device |
07/07/1987 | US4679099 Information signal reproducing apparatus |
07/07/1987 | US4679097 Method of recording and reproducing video and audio signals on a magnetic tape |
07/07/1987 | US4679054 Print head |
07/07/1987 | US4678951 Linear motor |
07/07/1987 | US4678722 Record member with metallic antifriction overcoat |
07/07/1987 | US4678721 Magnetic recording medium |
07/07/1987 | US4678708 Magnetic recording medium |
07/07/1987 | US4678706 Magnetic recording medium |
07/07/1987 | US4678705 Magnetic pigment |
07/07/1987 | US4678697 Magnetic recording medium |
07/07/1987 | US4678682 Process for producing magnetic recording medium |
07/07/1987 | US4678547 Heat resistance, hardness |
07/07/1987 | CA1223958A1 Magnetic head |
07/02/1987 | WO1987003996A1 Magnetic recording/regenerating apparatus |
07/02/1987 | DE3644388A1 Thin-film yoke-type magnetic head |
07/01/1987 | EP0227480A2 Magneto-optical recording |
07/01/1987 | EP0227389A2 Apparatus and method for calibrating recording and transmission systems |
07/01/1987 | EP0227361A2 Transducer element assembly |
07/01/1987 | EP0227104A2 Particles containing iron carbide |
07/01/1987 | EP0227069A2 Middle layer material for magnetic disc |
07/01/1987 | EP0227061A2 Disk drive apparatus providing increased track density |
07/01/1987 | EP0227025A2 Fluorine-containing organosilanes useful as magnetic media lubricants |
07/01/1987 | EP0226574A1 Magnetoresistive sensor for producing electric signals. |
07/01/1987 | CN86108556A Signal processing device for disk storage apparatus |
06/30/1987 | US4677515 Thin-film magnetic head for writing and reading for a recording medium that can be magnetized vertically |
06/30/1987 | US4677514 Straddle type magnetic head |
06/30/1987 | US4677513 Magneto-optic thin film head and method of use |
06/30/1987 | US4677512 Magnetic reproducing apparatus |
06/30/1987 | US4677511 Head position adjusting device in cassette tape recorders |
06/30/1987 | US4677508 Endwise loaded cartridge tape drive |
06/30/1987 | US4677506 Tracking apparatus for rotational magnetic recording medium with envelope level correction |
06/30/1987 | US4677505 Tape recorder head position controlling device |
06/30/1987 | US4677504 Recording apparatus for video signal |
06/30/1987 | US4677358 Stepping motor drive controlling circuit |
06/30/1987 | US4677036 Multilayer-magnetic cores between dielectrics |
06/30/1987 | US4677032 Vertical magnetic recording media with multilayered magnetic film structure |
06/30/1987 | US4677030 Magnetic storage medium |
06/30/1987 | US4677024 Magnetic recording medium |
06/30/1987 | US4677023 Magnetic recording medium |
06/30/1987 | US4676838 Lamellar iron oxide pigments, a process for the production thereof and the use thereof |
06/30/1987 | US4675988 Method for producing a magnetic head core |
06/30/1987 | US4675986 Electrical lapping guide for controlling the batch fabrication of thin film magnetic transducers |
06/25/1987 | DE3545361A1 Magnetic storing device for a perpendicular magnetisation |
06/24/1987 | EP0226355A2 Actuator access control system |
06/24/1987 | EP0226279A1 Process for lubricating magnetic disks, and to magnetic disks |
06/24/1987 | EP0226162A1 Polyethylene-2,6-naphthalate film for magnetic recording tapes |
06/23/1987 | US4675768 Flexible magnetic disk having an embossed circular hole |
06/23/1987 | US4675766 Combined magnetic write and read head for a recording medium which can be magnetized perpendicularly |
06/23/1987 | US4675765 Magnetic recording and/or reproducing element |
06/23/1987 | US4675761 Magnetic head positioning apparatus and method |
06/23/1987 | US4675760 Information signal recording and/or playback system and method using a prerecorded reference track |
06/23/1987 | US4675759 Method and arrangement for controlling the motion of a magnetic head in a magnetic tape recorder |
06/23/1987 | US4675758 Magnetic disc recording and/or reproducing apparatus |
06/23/1987 | US4675757 Method and apparatus for synchronizing tape recording and playback machines |
06/23/1987 | US4675753 Information signal recording and reproducing apparatus |
06/23/1987 | US4675250 Magnetic recording medium |
06/23/1987 | US4675240 Multilayer-single crystal silicon substrate, magnetic and non magnetic layers |
06/23/1987 | US4675239 Perpendicular magnetization film |
06/23/1987 | US4675224 Forming magnetic and nonmagnetic thin layers on high permeabi lty substrate |
06/23/1987 | US4675208 Magnetic recording media |
06/23/1987 | US4675170 Preparation of finely divided acicular hexagonal ferrites having a high coercive force |
06/23/1987 | US4675075 Magnetic recording production processes |
06/19/1987 | DE3640647A1 Particles containing cobalt carbide |
06/19/1987 | DE3544883A1 Thin-film magnetic head for the perpendicular magnetisation of a corresponding recording medium |
06/19/1987 | DE3544851A1 Thin-film magnetic head for the longitudinal or perpendicular magnetisation of a corresponding recording medium |
06/19/1987 | DE3544823A1 Thin-film magnetic head for a recording medium to be magnetised longitudinally or perpendicularly |
06/19/1987 | DE3544090A1 Video magnetic tape apparatus |
06/18/1987 | WO1987003730A1 Method and apparatus using a stationary saturable member for transferring signals relative to a magnetic storage medium |
06/18/1987 | WO1987003729A1 Method and apparatus for magnetic transducing |
06/18/1987 | WO1987003728A1 Magnetic recorder medium having discrete magnetic storage and saturable layers and magnetic signal processing apparatus and method using the medium |
06/17/1987 | CN86107146A Supporting magnetic head device for magnetic tape recording |
06/16/1987 | US4674000 Cleaning device for the magnetic heads of video tape recorders |
06/16/1987 | US4673999 Multi channel magnetic transducer head |
06/16/1987 | US4673998 Magnetic transducer head having series connected magnetroresistance effect sensing element with head output connected between the sensing elements |
06/16/1987 | US4673996 Magnetic head air bearing slider assembly utilizing transverse pressurization contours |
06/16/1987 | US4673992 Method and apparatus for increasing density of an accumulation of tape in a closed loop tape transporter |
06/16/1987 | US4673991 Video signal recording and/or reproducing apparatus having a function of carrying out assembled recordings |
06/16/1987 | US4673705 Acrylate-functional resins containing carboxyl and amide groups; wetting agents; magnetic tapes |
06/16/1987 | US4673622 Backing consisting of nonmagnetic powder in binder mixture of nitrocellulose, vinyl acetate-vinyl chloride copolymer, polyurethane and isocyanate compound |
06/16/1987 | US4673617 Thin film magnetic recording media |
06/16/1987 | US4673612 Polyamideimide copolymers |