Dynamic magnetic information storage or retrieval – Record medium – In container
Patent
1988-09-13
1990-11-13
Tupper, Robert S.
Dynamic magnetic information storage or retrieval
Record medium
In container
G11B 2303
Patent
active
049706187
ABSTRACT:
A disk cartridge has a pair of cases, one of the cases including boss portions each having a welding allowance at a top end thereof, the boss portions being projected from one of the cases, the other of the cases being provided with cylindrical portions into which the boss portions are respectively inserted when the cases are superposed, and the welding allowances of the boss portions and inner bottom portions of the cylindrical portions are supersonically-welded to each other, the disk cartridge further including portions for controlling the air flow which includes resin particles generated at the time of the supersonic welding in such a manner that the air flow is directed to that outside of a region in which a disk rotates, the controlling portions being situated adjacent to the welded portions of the cases, thereby avoiding fear of resin particles being adhered to the disk surfaces during ultrasonic welding.
REFERENCES:
patent: 4482929 (1984-11-01), Beck et al.
patent: 4510546 (1985-04-01), Asami et al.
Fujita Minoru
Kato Yoshitake
Hitachi Maxell Ltd.
Tupper Robert S.
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