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)
11/1991
11/05/1991US5063454 Automatic adjustment method and system for servo motor circuit of a magnetic disk apparatus
11/05/1991US5063310 Transistor write current switching circuit for magnetic recording
11/05/1991US5063120 High density
11/05/1991US5063119 Magnetic recording medium comprising a fluorine containing oligomer surfactant in or on the magnetic layer
11/05/1991US5063105 Magnetic recording medium in which certain physical properties of the magnetic layer and the backcoat layer are specified
11/05/1991US5062983 Magnetic powder for magnetic recording media
11/05/1991US5062982 Coercive force!
11/05/1991US5062938 High coercivity low noise cobalt alloy magnetic recording medium and its manufacturing process
11/05/1991US5062904 Treatment of ferromagnetic metal powders and magnetic recording media using the same
11/05/1991US5062885 Rare earth metal-iron group metal target, alloy powder therefor and method of producing same
11/05/1991US5062196 Multilayer, silicon substrate, insulation, metal, masking resin, etching, thermo-oxidizing, conductivity, electrodeposition, magnetism
11/05/1991CA1291677C Longitudinal magnetic coated recording medium
11/05/1991CA1291676C Electroless deposition magnetic recording media process and products produced thereby
10/1991
10/31/1991WO1991016706A1 Method of producing magnetic disks having signals
10/31/1991WO1991016705A1 Method for making magnetic oxide precipitates
10/31/1991WO1991016470A1 Amorphous uranium alloy and use thereof
10/30/1991EP0454473A2 Thin film magnetic disks
10/30/1991EP0454408A2 Digital video signal recording/reproducing apparatus
10/30/1991EP0454296A1 Magnetic recording medium
10/30/1991EP0454139A2 Magnetic recording medium and process for the preparation thereof
10/30/1991EP0454009A1 Method for manufacturing functional thin film
10/30/1991EP0453996A2 Magnetically recording disk system
10/30/1991EP0453992A2 Floating magnetic head
10/30/1991EP0453663A1 Slave magnetic recording media and its production method
10/30/1991CN1014560B Three-pole magnetic recording head
10/29/1991US5062091 Magneto-optical recording method and apparatus capable of overwriting data using a radiation beam
10/29/1991US5062023 Disk file servo loop with improved track settling
10/29/1991US5062021 Selectively textured magnetic recording media
10/29/1991US5062019 Method and apparatus for accurately positioning a magnetic recording and reproducing head
10/29/1991US5062018 Swaged head arm mounting arrangement for disc drives using shape memory alloy
10/29/1991US5062017 Hour-glass disk head slider
10/29/1991US5062012 Linear access mechanism with driving force reaction cancelling device and magnetic disk apparatus using the same
10/29/1991US5062007 Digital signal magnetic recording/reproducing apparatus
10/29/1991US5061577 Magnetic coating compositions containing fluoropolyols
10/29/1991US5061576 Thin film magnetic head
10/29/1991US5061571 Biaxially oriented polyester film
10/29/1991US5061570 As binder
10/29/1991US5061564 Magnetic recording medium comprising a polar group containing resin or compound and a methyl iso ester lubricant prepared from a methyl iso acid or methyl iso alcohol or both
10/29/1991US5061562 Forming protective layer of carbon with thin magnetic metal film and lubricating film; excellent lubricating properties and running durability
10/29/1991US5061537 Stability, minimized output variation
10/29/1991US5061516 Production method for magnetic recording medium
10/29/1991CA1291564C Magnetic characteristic identification system
10/29/1991CA1291443C Method and target for sputter depositing thin film
10/29/1991CA1291375C Process for chemically bonding a lubricant to a magnetic disk
10/29/1991CA1291318C Process for the preparation of isometric magnetic iron oxide pigments
10/24/1991WO1991016703A1 Process for producing a thin-film magnetic tape head
10/24/1991DE4112724A1 Cutting continuous magnetic tape - using pair of rotary blades above and below tape, which are offset slightly to avoid burred edge
10/24/1991CA2080479A1 Process for producing a thin-film magnetic tape head
10/23/1991EP0453276A2 Biaxially oriented polyester film for magnetic recording media
10/23/1991EP0453192A2 Method of minimizing head-arm movements in a disk drive
10/23/1991EP0453109A2 Magnetic disc drive
10/23/1991EP0452876A2 A longitudinal magnetic recording medium
10/23/1991EP0452846A2 Narrow track thin film magnetic head and fabrication method thereof
10/23/1991EP0452369A1 Deposited permanent magnet for hard and easy axes biasing of a magnetoresistive head.
10/23/1991EP0275290B1 Device for protecting against an environing magnetic flux, objects susceptible of being altered by a magnetic flux, particularly objects presenting a carrier medium for magnetic inscriptions
10/22/1991US5060210 Controlling head seeking speed in disk storage units by limiting displacement of head with respect to its supporting headarm
10/22/1991US5060208 Magnetooptical recording method and apparatus utilizing shift adjustment
10/22/1991US5060207 Magneto-optical recording/reproducing apparatus
10/22/1991US5060104 Rotary head device with six head units
10/22/1991US5060103 Magnetic disc apparatus having protective shield for eliminating spurious magnetism at a magnetic head
10/22/1991US5060102 Magnetic head having track regulation grooves formed at tape sliding surface
10/22/1991US5060100 Magnetic disc device
10/22/1991US5060098 Magnetic recorder provided with a magnetic head slider having a non-magnetic oxide of spinel structure
10/22/1991US5060097 Magnetic disc file including a slider which exhibits reduced deformation during operation
10/22/1991US5060092 Magnetic recording with split track tracking signals
10/22/1991US5060091 Apparatus and method for hard disk testing
10/22/1991US5060089 Data write pulse compensator circuit
10/22/1991US5060088 Adaptive equalization for recording systems using partial-response signaling
10/22/1991US5059469 Magnetic recording medium
10/22/1991US5059468 Magnetic recording medium
10/22/1991US5059278 Selective chemical removal of coil seed-layer in thin film head magnetic transducer
10/22/1991CA1291258C Recording and/or reproducing apparatus
10/22/1991CA1291244C Magnetic devices
10/20/1991WO1991016704A1 Apparatus and method for reading helically recorded tracks
10/20/1991CA2080592A1 Apparatus and method for reading helically recorded tracks
10/16/1991EP0452193A1 Fabrication processes of a magnetic recording/reproducing head
10/16/1991EP0452135A2 Video tape recorder heads
10/16/1991EP0452113A1 Readily adhesive polyester film and process for preparation thereof
10/16/1991EP0452039A2 Magnetic recording medium
10/16/1991EP0451935A1 Method and apparatus for predicting twist-out torque of a swage mount
10/16/1991EP0451871A2 Flying-type composite magnetic head
10/16/1991EP0451863A2 Method of applying a liquid to a flexible substrate
10/16/1991EP0451862A2 Method for Applying Magnetic Liquid to a Web by Use of an Extrusion Head with Excess Liquid
10/16/1991EP0451768A2 Magnetic tape
10/16/1991EP0451703A2 Magnetic recording medium
10/16/1991EP0451457A2 Magnetic recording medium
10/16/1991EP0451179A1 Composite polyester films suitable in particular as supports for magnetic recording materials, and magnetic recording materials thus produced.
10/16/1991CN2086930U Energy-saving two-power-supply system of sounder
10/16/1991CN1014370B Rotating transformer
10/15/1991US5057959 Thin-film magnetic head having substrate formed of crystallized glass
10/15/1991US5057958 Magnetic head for magnetic tracks with strong field
10/15/1991US5057957 Magnetic read/write head having a magnetic short circuit
10/15/1991US5057956 Magnetic head having gap depth sighing aperture
10/15/1991US5057955 Composite magnetic head
10/15/1991US5057954 Disk drive head lift mechanism
10/15/1991US5057953 Head slider suspension assembly load beam having a fundamental mode vibration characteristic in the range of about 2000 hertz to about 4000 hertz
10/15/1991US5057949 Digital magnetic reproducing apparatus with variable tape speed
10/15/1991US5057948 Recording of digital signals on d.c.-erased magnetic tape
10/15/1991US5057947 Recording and reproducing apparatus with limited digital copying
10/15/1991US5057945 Signal recording/reproducing apparatus
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