Patents
Patents for G11B 5 - Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor (87,826)
12/1987
12/02/1987EP0247839A2 Magnetic recording medium
12/02/1987EP0247787A2 Tape recorders having flying erase heads
12/02/1987EP0247681A1 Magnetic material, magnetic recording medium, and method of manufacturing a magnetic material
12/02/1987EP0247453A2 Magnetic disk drive apparatus or system
12/02/1987EP0247442A2 Rotating magnetic head device in magnetic recording and reproducing apparatus
12/02/1987EP0247339A2 Servo gain compensation in a disc drive
12/02/1987EP0247334A2 Magnetic recording medium
12/02/1987EP0247068A1 Disk drive control system
12/01/1987US4710838 Magnetic thin-film head for a recording medium that can be magnetized vertically
12/01/1987US4710837 Magnetic head device including magnetic media biasing and positioning means
12/01/1987US4710836 Magnetic head
12/01/1987US4710834 Apparatus for positioning a magnetic disk read head with pulse operated detent magnet
12/01/1987US4710833 Floppy disk r/w head assembly
12/01/1987US4710832 Tracking system for rotary magnetic recording medium using weighted sampled track values
12/01/1987US4710828 Tracking alignment for a rotating magnetic transducer head
12/01/1987US4710826 Apparatus with liquid crystal display panel, for recording/playing back television signal by utilizing digital audio tape recorder system
12/01/1987US4710687 Seek operation control apparatus
12/01/1987US4710427 With a surfactant, steeping in organic liquid and drying
12/01/1987US4710424 Magnetic disk and method of making same
12/01/1987US4710421 Low heat shrinkage, dimensional stability, winding
12/01/1987US4710243 Wear-resistant alloy of high permeability and method of producing the same
12/01/1987US4709816 Recording disc cartridge
11/1987
11/25/1987EP0246757A2 Process for forming a coating
11/25/1987EP0246742A1 Device for damping the oscillations of a stepping motor
11/25/1987EP0246706A1 Magnetic transducing head having clad core faces
11/25/1987EP0246705A1 Methods of and apparatus for recording an information signal
11/25/1987EP0246685A2 Method for stacking billets
11/25/1987EP0246661A2 Apparatus for recording information signals
11/25/1987EP0246501A1 Process for producing acicular magnetic iron oxides containing cobalt
11/25/1987EP0246375A1 Head/arm assembly and rotary access mechanism for a disk file
11/25/1987CN87208058U Tape cartridge being able to clean magnetic head
11/24/1987US4709288 Adjusting means in particular for guide elements, and magnetic tape cassette possessing such means
11/24/1987US4709287 Head height adjustment construction in magnetic recording and reproducing apparatus with rotary cylinder
11/24/1987US4709286 Supporting means for supporting a magnetic transducer for a double surface type flexible disk apparatus
11/24/1987US4709285 Head assemblies mounted for optimum contact with a flexible magnetic disk
11/24/1987US4709284 Magnetic recording device having a stabilized zirconia slider and a cobalt based recording medium
11/24/1987US4709281 Data transfer apparatus for use with a magnetic disk cartridge
11/24/1987US4709280 Apparatus for varying the path of magnetic tape passing over a rotary tape head
11/24/1987US4709279 Read/write amplifier power control device for a disk apparatus
11/24/1987US4709275 Apparatus for magnetically recording and/or reproducing two-channel audio signals together with a color video signal in successive oblique tracks on a magnetic tape
11/24/1987US4709175 Linear pulse motor
11/24/1987US4709174 Magnetic pole pieces for using in linear pulse motor
11/24/1987US4708909 Radiation-curable, magnetic coating material and magnetic recording medium using the same
11/24/1987US4708906 Magnetic recording medium comprising an undercoat layer made of specific type of resin composition
11/24/1987US4708902 Polyester films suitable for use in magnetic recording media
11/24/1987US4707948 Float lapping fixture
11/24/1987CA1229641A1 Fluid bearing device
11/19/1987WO1987006745A3 Magnetic information-recording element and method of manufacture
11/19/1987EP0245883A2 Polyester film for magnetic recording medium
11/19/1987EP0245449A1 Binarily related variable rate recorder
11/19/1987EP0245303A1 Detection and amplification circuit
11/17/1987US4707818 Method and apparatus for recording digitized information on a disc
11/17/1987US4707756 Silicon, germanium underlays; cobalt alloy
11/17/1987US4707755 Optical read-out magnetic head
11/17/1987US4707754 Voice coil balanced actuator
11/17/1987US4707753 Disk drive head access mechanism
11/17/1987US4707750 Automatic sequencer for a flexible disk loader/copier
11/17/1987US4707593 Visible image magnetic card
11/17/1987US4707417 Magnetic composite film
11/17/1987US4707411 Vinyl chloride polymers
11/17/1987US4707410 Magnetic recording media
11/17/1987US4707403 Magnetic recording medium having an improved magnetic recording layer
11/17/1987US4707392 Protective coatings, radiation-cured unsaturated compound, roughness
11/17/1987US4707380 Process for preparing a magnetic recording medium
11/11/1987EP0244980A2 Rate-of-change signal generator and method using sampling techniques
11/11/1987EP0244868A2 Magnetic recording disc
11/11/1987EP0116544B1 Management of defects in storage media
11/11/1987CN86206166U Special communication recorder with magnetic recording paper
11/11/1987CN86103068A Disc drive compatible tape cartridge
11/10/1987US4706293 Circuitry for characterizing speech for tamper protected recording
11/10/1987US4706282 Decoder for a recorder-decoder system
11/10/1987US4706232 Optical recording and reproducing apparatus
11/10/1987US4706147 Cassette for cleaning the heads of a magnetic tape recorder
11/10/1987US4706146 Magnetic head with concave contact face
11/10/1987US4706145 Erasing head
11/10/1987US4706144 Rotary head device with fluid bearing
11/10/1987US4706143 Rotary head cylinder device with fluid bearing
11/10/1987US4706142 Magnetic disk apparatus
11/10/1987US4706138 Amplification of signals produced by a magnetic sensor
11/10/1987US4705718 Magnetic recording medium
11/10/1987US4705711 Knurled surface to prevent slippage, magnetic tapes
11/10/1987US4705699 Method of coating magnetic recording media with perfluoropolyether compositions which are soluble in non-fluorinated solvents
11/10/1987US4705613 Sputtering method of making thin film head having improved saturation magnetization
11/10/1987US4705566 Polishing composition for memory hard disc
11/10/1987US4704788 Method for making magnetic heads
11/07/1987CN86210363U Electric phonograph using magnetic disc
11/05/1987WO1987006745A2 Magnetic information-recording element and method of manufacture
11/04/1987EP0244150A2 Stepping motor excitation sequences
11/04/1987EP0244024A1 Magnetic recording element
11/04/1987EP0243973A2 Compact disk drive
11/04/1987EP0243860A2 A multilayered vertical magnetic recording medium
11/04/1987EP0243836A1 Magnetic-recording carriers
11/04/1987EP0243829A2 Magnetic record carrier
11/04/1987EP0243821A2 A servo control system for a data recording disk file
11/04/1987EP0243798A2 Magnetic recording medium and method of manufacturing the same
11/04/1987EP0243729A2 Method and apparatus for eliminating apparent offset in the servo code in a magnetic disc drive
11/04/1987EP0243672A2 A magnetic recording medium
11/04/1987EP0243627A1 Electro-deposited CoNiFe alloy for thin film heads
11/04/1987EP0243604A2 A magnetic recording medium
11/04/1987EP0243466A1 Apparatus and method for damping head positioners for disk drives.