Dynamic magnetic information storage or retrieval – Head – Head accessory
Patent
1978-06-09
1979-12-25
Eddleman, Alfred H.
Dynamic magnetic information storage or retrieval
Head
Head accessory
360 99, 360137, G11B 541, G11B 2504
Patent
active
041808401
ABSTRACT:
Various flexible disk information storage systems use a dual-component access arm which includes both a magnetic transducer and a pressure pad. The transducer rides on one side of the disk while the pressure pad is applied to the opposite side of the disk so as to increase the loading of the transducer against the normally-flexible surface. Such disk systems can include two such transducer/pad pairs, oppositely-oriented so that both sides of the disk can be read. In the disclosed cleaning disk assembly, an abrasive material is placed on one side of the disk and a smooth surface is placed on the other. The abrasive side is used to clean a transducer, while the smooth side is used to present a standard surface to the associated pressure pad. The cleaning assembly includes a reversible container having special apertures which enable the system software, in conjunction with disk drive detection elements, to automatically determine abrasive surface orientation. The assembly thus enables either one of the transducers to be cleaned without danger of loading the corresponding pressure pad onto the abrasive side of the cleaning disk.
REFERENCES:
patent: 3668658 (1972-06-01), Flores et al.
patent: 3931644 (1976-01-01), Ward
patent: 4003088 (1977-01-01), Schwartz
patent: 4065798 (1977-12-01), Sugisaki et al.
patent: 4085428 (1978-04-01), Green et al.
patent: 4106067 (1978-08-01), Masuyama et al.
Burroughs Corporation
Eddleman Alfred H.
Feeney, Jr. Edward J.
Peterson Kevin R.
Woloson Gerald J.
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