Magnetic disk apparatus

Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Disk record

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

360 9701, G11B 5012, G11B 3314

Patent

active

056548478

ABSTRACT:
Disclosed is a magnetic disk apparatus which protects magnetic disks against external and internal magnetic fields and electromagnetic waves. This magnetic disk apparatus comprises at least one magnetic disk; rotation unit for rotating the magnetic disk; a magnetic head for recording and reproducing information on and from the magnetic disk; an actuator for supporting the magnetic head and moving the magnetic head to a given position on the magnetic disk; and an enclosure for covering those individual components. According to one aspect of this invention, the enclosure is made of a ferromagnetic material. According to another aspect of this invention, the enclosure is made of a non-magnetic material and a shield layer made of a ferromagnetic material is provided at least in that region of an inner wall of the enclosure which corresponds to the movable range of the magnetic head. According to a further aspect of this invention, this apparatus further comprises a circuit board provided on the inner wall of the enclosure, circuitry for accomplishing magnetic recording and reproduction being mounted on the circuit board, and a shield layer provided between the enclosure and the circuit board. According to a still further aspect of this invention, this apparatus further comprises a circuit board provided on the inner wall of the enclosure, circuitry for accomplishing magnetic recording and reproduction being mounted on the circuit board, and a conductive shield member provided between the magnetic disk and the circuit board.

REFERENCES:
patent: 3721746 (1973-03-01), Knappenberger
patent: 3816911 (1974-06-01), Knappenberger
patent: 4053943 (1977-10-01), Galvin
patent: 5004207 (1991-04-01), Ishikawa et al.
patent: 5041932 (1991-08-01), Hamilton
patent: 5051854 (1991-09-01), Iwanaga
patent: 5235482 (1993-08-01), Schmitz
patent: 5270493 (1993-12-01), Inoue et al.
patent: 5282099 (1994-01-01), Kawagoe et al.
patent: 5307508 (1994-04-01), Rollins et al.
patent: 5313015 (1994-05-01), Hoge

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Magnetic disk apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Magnetic disk apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic disk apparatus will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1079093

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.