Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Disk record
Patent
1998-01-08
2000-03-07
Tupper, Robert S.
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Disk record
360106, G11B 555, G11B 1702
Patent
active
060348402
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to a large-capacity storage apparatus for use in an information processing apparatus and particularly to a disk storage apparatus employing a recording disk such as a magnetic disk, an optical disk, a magneto-optical disk or the like as an information storage medium and a disk cartridge for use in the above disk storage apparatus.
BACKGROUND ART
For example, an apparatus having an arrangement shown in FIGS. 22 and 23 has been generally known as a high-speed large-capacity disk storage apparatus such as a removable hard disk apparatus which is typical thereof, or the like.
This removable disk storage apparatus 1 employs a rotation actuator and has a apparatus body 2, a disk cartridge 3 detachably loaded onto this apparatus body 2, and so on. The apparatus body 2 has a chassis 4 having a cartridge accommodation chamber for accommodating the disk cartridge 3, a rotation actuator rotatably supported by the chassis 4, a magnetic head 6 attached to a tip end of the rotation actuator 5, a spindle motor 7 supported by the chassis 4 so as to be capable of being moved upward and downward, and so on.
A chucking magnet is attached to a rotation shaft of the spindle motor 7. A lifting mechanism, not shown, is operated in an interlocking operation with an operation of inserting and ejecting the disk cartridge 3, thereby the spindle motor 7 and the chucking magnet 8 being lifted up and down. As a result, when the spindle motor 7 is lifted up, the chucking magnet 8 chucks a metal hub 13 attached to a magnetic disk 9 accommodated in the disk cartridge 3, thereby the magnetic disk 9 being rotated together with the spindle motor.
The disk cartridge 3, as shown in FIG. 24 which is an exploded diagram showing a general arrangement thereof, has a pair of upper and lower shells 10, 11, the magnetic disk 9 rotatably accommodated in a disk accommodation chamber 12 between both of the shells 10, 11, and so on. The magnetic disk 9 has the metal hub 13 attached thereto such that its lower portion is rotatably engaged with a hub aperture 14 of the lower shell 11. Moreover, the disk cartridge 3 has a head insertion slot 15 permitting the rotation actuator 5 to be inserted thereinto and drawn therefrom. A shutter 16 for opening and closing the head insertion slot 15 is attached to the head insertion slot, and the shutter 16 prevents dusts from being entering the disk cartridge when the disk cartridge is not loaded.
The shutter 16 of the disk cartridge 3 is rotatably supported by the upper shell 10 at projections 16a projected from their both ends. The shutter 16 is rotated by a shutter opening and closing mechanism, not shown, attached to the apparatus body 2 and a free end side of the shutter 16 is rotated so as to be projected outward from the head insertion slot 15, thereby the head insertion slot 15 being opened. Thus, the rotation actuator 5 can be inserted into the head insertion slot.
Thus, as shown in FIG. 22, when the disk cartridge 3 is inserted into the removable disk storage apparatus 1, the shutter 16 of the disk cartridge 3 is automatically opened by the shutter opening and closing mechanism. When the disk cartridge 3 is inserted and reaches a predetermined position, the spindle motor 7 is lifted up to attract the metal hub 13 by a magnetic force of the chucking magnet 8. Thus, the magnetic disk 9 and spindle motor 7 can be rotated together (chucking).
When the spindle motor 7 is rotated and a angular speed of the magnetic disk 9 becomes constant, the magnetic head 6 provided at the tip end of the rotation actuator 5 is brought close to a recording surface of the magnetic disk 9. Thus, preparation for recording (reproducing) information on (from) the magnetic disk 9 is completed and then a predetermined signal is supplied to the magnetic head 9, which enables a desired information to be recorded on (or reproduced from) the information recording surface of the magnetic disk 9.
An apparatus having an arrangement shown in FIG. 25 has been known as a conventional removable disk
REFERENCES:
patent: 4503474 (1985-03-01), Nigam
patent: 5218503 (1993-06-01), Martin
patent: 5262918 (1993-11-01), Tannert
patent: 5280403 (1994-01-01), Martin
patent: 5317464 (1994-05-01), Witt et al.
patent: 5398141 (1995-03-01), Tannert
patent: 5444586 (1995-08-01), Iftikar et al.
Takahashi Kazuo
Watanabe Minoru
Yamada Takashi
Yamamoto Kazuyuki
Sony Corporation
Tupper Robert S.
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