Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Disk record
Patent
1989-06-30
1991-04-23
Wolff, John H.
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Disk record
360 9908, 360 9912, G11B 5012
Patent
active
050104276
ABSTRACT:
A magnetic disk positioning device for loading a magnetic disk onto a disk drive comprises a driving pin projecting from a turntable. The driving pin, which is positioned within a triangular hole defined within the disk drive turntable, is capable of moving in both the radial and circumferential directions. Upon loading, the driving pin initially slips into a rectangular shaped hole provided in the disk hub. As the disk rotates further, the driving pin is clamped by a slanting side of the triangular hole and two sides of the rectangular hole. By securing the position of the driving pin, the invention enables a magnetic disk to be accurately and consistently positioned at the desired point within the disk drive and so allows more precise recording and replaying.
REFERENCES:
patent: 4517617 (1985-05-01), Tsuji et al.
patent: 4613921 (1986-09-01), Holmes
patent: 4649444 (1987-03-01), Ichihara
patent: 4669008 (1987-05-01), Ichihara
patent: 4700245 (1987-10-01), Sakaguchi
patent: 4752847 (1988-06-01), Harris et al.
patent: 4873595 (1989-10-01), Katsuhiko et al.
Mitsumori Kazuya
Taguchi Katsuhiko
Juki Corporation
Wolff John H.
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