Patents
Patents for G11B 5 - Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor (87,826)
07/1987
07/14/1987US4680211 Recording disks
07/14/1987US4680197 Method of manufacturing perpendicular magnetic recording floppy disk
07/14/1987US4680130 Preparation of finely divided isotropic ferrite powders having the spinel structure
07/14/1987CA1224268A1 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
07/08/1987EP0228240A1 Magnetic tape recording/reproducing apparatus
07/08/1987EP0227920A2 Magnetic recording apparatus
07/08/1987EP0227845A1 Method and apparatus for controlling the flying height of the head in a magnetic storage unit
07/08/1987CN86201240U Automatic multipurpose card-reading machine
07/08/1987CN86108777A Method and apparatus for magnetic transducing
07/08/1987CN86108660A Driving device for disk drive
07/07/1987US4679185 Pivotal-arm device for a disc scanning unit
07/07/1987US4679183 Sound recording apparatus for blank films and tapes
07/07/1987US4679108 Portable playback system with active tape drive tensioning feature
07/07/1987US4679107 Magnetic transducer head utilizing magnetoresistance effect
07/07/1987US4679105 Head positioning assembly for a disk drive
07/07/1987US4679104 Method and arrangement for positioning a magnetic head to various tracks of a magnetic tape
07/07/1987US4679103 Digital servo control system for a data recording disk file
07/07/1987US4679102 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
07/07/1987US4679100 Rotary head type magnetic recording and reproducing device
07/07/1987US4679099 Information signal reproducing apparatus
07/07/1987US4679097 Method of recording and reproducing video and audio signals on a magnetic tape
07/07/1987US4679054 Print head
07/07/1987US4678951 Linear motor
07/07/1987US4678722 Record member with metallic antifriction overcoat
07/07/1987US4678721 Magnetic recording medium
07/07/1987US4678708 Magnetic recording medium
07/07/1987US4678706 Magnetic recording medium
07/07/1987US4678705 Magnetic pigment
07/07/1987US4678697 Magnetic recording medium
07/07/1987US4678682 Process for producing magnetic recording medium
07/07/1987US4678547 Heat resistance, hardness
07/07/1987CA1223958A1 Magnetic head
07/02/1987WO1987003996A1 Magnetic recording/regenerating apparatus
07/02/1987DE3644388A1 Thin-film yoke-type magnetic head
07/01/1987EP0227480A2 Magneto-optical recording
07/01/1987EP0227389A2 Apparatus and method for calibrating recording and transmission systems
07/01/1987EP0227361A2 Transducer element assembly
07/01/1987EP0227104A2 Particles containing iron carbide
07/01/1987EP0227069A2 Middle layer material for magnetic disc
07/01/1987EP0227061A2 Disk drive apparatus providing increased track density
07/01/1987EP0227025A2 Fluorine-containing organosilanes useful as magnetic media lubricants
07/01/1987EP0226574A1 Magnetoresistive sensor for producing electric signals.
07/01/1987CN86108556A Signal processing device for disk storage apparatus
06/1987
06/30/1987US4677515 Thin-film magnetic head for writing and reading for a recording medium that can be magnetized vertically
06/30/1987US4677514 Straddle type magnetic head
06/30/1987US4677513 Magneto-optic thin film head and method of use
06/30/1987US4677512 Magnetic reproducing apparatus
06/30/1987US4677511 Head position adjusting device in cassette tape recorders
06/30/1987US4677508 Endwise loaded cartridge tape drive
06/30/1987US4677506 Tracking apparatus for rotational magnetic recording medium with envelope level correction
06/30/1987US4677505 Tape recorder head position controlling device
06/30/1987US4677504 Recording apparatus for video signal
06/30/1987US4677358 Stepping motor drive controlling circuit
06/30/1987US4677036 Multilayer-magnetic cores between dielectrics
06/30/1987US4677032 Vertical magnetic recording media with multilayered magnetic film structure
06/30/1987US4677030 Magnetic storage medium
06/30/1987US4677024 Magnetic recording medium
06/30/1987US4677023 Magnetic recording medium
06/30/1987US4676838 Lamellar iron oxide pigments, a process for the production thereof and the use thereof
06/30/1987US4675988 Method for producing a magnetic head core
06/30/1987US4675986 Electrical lapping guide for controlling the batch fabrication of thin film magnetic transducers
06/25/1987DE3545361A1 Magnetic storing device for a perpendicular magnetisation
06/24/1987EP0226355A2 Actuator access control system
06/24/1987EP0226279A1 Process for lubricating magnetic disks, and to magnetic disks
06/24/1987EP0226162A1 Polyethylene-2,6-naphthalate film for magnetic recording tapes
06/23/1987US4675768 Flexible magnetic disk having an embossed circular hole
06/23/1987US4675766 Combined magnetic write and read head for a recording medium which can be magnetized perpendicularly
06/23/1987US4675765 Magnetic recording and/or reproducing element
06/23/1987US4675761 Magnetic head positioning apparatus and method
06/23/1987US4675760 Information signal recording and/or playback system and method using a prerecorded reference track
06/23/1987US4675759 Method and arrangement for controlling the motion of a magnetic head in a magnetic tape recorder
06/23/1987US4675758 Magnetic disc recording and/or reproducing apparatus
06/23/1987US4675757 Method and apparatus for synchronizing tape recording and playback machines
06/23/1987US4675753 Information signal recording and reproducing apparatus
06/23/1987US4675250 Magnetic recording medium
06/23/1987US4675240 Multilayer-single crystal silicon substrate, magnetic and non magnetic layers
06/23/1987US4675239 Perpendicular magnetization film
06/23/1987US4675224 Forming magnetic and nonmagnetic thin layers on high permeabi lty substrate
06/23/1987US4675208 Magnetic recording media
06/23/1987US4675170 Preparation of finely divided acicular hexagonal ferrites having a high coercive force
06/23/1987US4675075 Magnetic recording production processes
06/19/1987DE3640647A1 Particles containing cobalt carbide
06/19/1987DE3544883A1 Thin-film magnetic head for the perpendicular magnetisation of a corresponding recording medium
06/19/1987DE3544851A1 Thin-film magnetic head for the longitudinal or perpendicular magnetisation of a corresponding recording medium
06/19/1987DE3544823A1 Thin-film magnetic head for a recording medium to be magnetised longitudinally or perpendicularly
06/19/1987DE3544090A1 Video magnetic tape apparatus
06/18/1987WO1987003730A1 Method and apparatus using a stationary saturable member for transferring signals relative to a magnetic storage medium
06/18/1987WO1987003729A1 Method and apparatus for magnetic transducing
06/18/1987WO1987003728A1 Magnetic recorder medium having discrete magnetic storage and saturable layers and magnetic signal processing apparatus and method using the medium
06/17/1987CN86107146A Supporting magnetic head device for magnetic tape recording
06/16/1987US4674000 Cleaning device for the magnetic heads of video tape recorders
06/16/1987US4673999 Multi channel magnetic transducer head
06/16/1987US4673998 Magnetic transducer head having series connected magnetroresistance effect sensing element with head output connected between the sensing elements
06/16/1987US4673996 Magnetic head air bearing slider assembly utilizing transverse pressurization contours
06/16/1987US4673992 Method and apparatus for increasing density of an accumulation of tape in a closed loop tape transporter
06/16/1987US4673991 Video signal recording and/or reproducing apparatus having a function of carrying out assembled recordings
06/16/1987US4673705 Acrylate-functional resins containing carboxyl and amide groups; wetting agents; magnetic tapes
06/16/1987US4673622 Backing consisting of nonmagnetic powder in binder mixture of nitrocellulose, vinyl acetate-vinyl chloride copolymer, polyurethane and isocyanate compound
06/16/1987US4673617 Thin film magnetic recording media
06/16/1987US4673612 Polyamideimide copolymers