Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Disk record
Patent
1977-11-03
1979-11-20
Wolff, John H.
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Disk record
3601301, 360133, G11B 1704, G11B 2302
Patent
active
041752740
ABSTRACT:
A flexible disc is provided for the recording and playback of information on a recording surface thereof. The disc is contained within a cartridge housing which protects the recording surface. At least one opening is provided in the disc which engages with at least one pin member of a drive hub, the drive hub providing rotation to the disc. The outer perimeter of the opening in the disc is larger than the outer perimeter of the pin member so that the disc is free to move laterally along the pin. At least one surface of the cartridge housing acts as a smoothing plane; rotation of the disc causes the disc to rise above such surface creating an air cushion between the disc and surface. An opening is provided in the cartridge housing for receiving a recording and/or playback head; the head is moveable within such opening so that it may be selectively indexed to read and/or write information on a plurality of tracks as the disc rotates within the cartridge. A relatively thin flexible spring member is fixed to the opposite side of the cartridge housing for applying a bias against the rotating disc directly opposite the opening to provide adequate head-to-disc coupling pressure over a wide range of vertical head alignments and geometries. In one embodiment, the flexible spring member is comprised of a mylar material.
REFERENCES:
patent: 2950353 (1960-08-01), Fomenko
patent: 3529301 (1970-09-01), Hiruta
patent: 3947893 (1976-03-01), Hall
IBM Technical Disclosure Bulletin, vol. 16, No. 11, Apr. 1974, p. 3805, "Gamma Fe.sub.2 O.sub.3 Films" by Ahn et al.
IBM Technical Disclosure Bulletin, vol. 19, No. 7, Dec. 1976, pp. 2684, 2685, "Cartridge for Magnetic Disc" by Kery et al.
IBM Technical Disclosure Bulletin, vol. 19, No. 12, May 1976, pp. 4720, 4721, "Encased Flexible Magnetic Disc with Wiper" by Bother.
Comfort James T.
McCord William K.
Sharp Melvin
Texas Instruments Incorporated
Wolff John H.
LandOfFree
Recording system with flexible magnetic recording disc does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Recording system with flexible magnetic recording disc, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Recording system with flexible magnetic recording disc will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-874373