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    Data storage means having both fixed and removable record disk means
    2.
    发明授权
    Data storage means having both fixed and removable record disk means 失效
    具有两个固定和可移动记录磁盘的数据存储方式

    公开(公告)号：US3566381A

    公开(公告)日：1971-02-23

    申请号：US3566381D

    申请日：1967-09-15

    Applicant: IBM

    Inventor： BUSLIK WALTER S ,  MARRS RALPH E

    IPC: G11B5/55 ,  G11B17/022 ,  G11B17/038 ,  G11B19/26 ,  G11B3/36 ,  G11B17/26 ,  G11B19/22

    CPC classification number: G11B17/022 ,  G11B5/5521 ,  G11B17/038 ,  G11B19/26

    Abstract: A DEVICE FOR MOVING A CARRIER EMPLOYS PERPENDICULARLY DISPOSED SHAFTS, ONE CARRYING A FLEXIBLE DISK AND THE OTHER SPACED WHEELS. A CARRIAGE IS MOUNTED TO ONE OF THE SHAFTS, WHICH IS THREADED, AND, WHEN ONE OF THE WHEELS IS MADE TO CONTACT THE FLEXIBLE DISK, THE CARRIAGE IS TRANSPORTED IN A DESIRED DIRECTION. WHEN USED IN A RANDOM ACCESS MAGNETIC DISK FILE, THE CARRIAGE SUPPORTS AT LEAST ONE MAGNETIC HEAD ASSEMBLY FOR BIDRIECTIONAL MOVEMENT RELATIVE TO THE MAGNETIC RECORD DISK. THE DISK FILE DISCLOSED HEREIN USES A FIXED MAGNETIC DISK AND A REMOVABLE, REPLACEABLE MAGNETIC DISK, BOTH SEATED TO THE SAME SPINDLE ASSEMBLY.

    7.
    发明专利
    未知

    公开(公告)号：DE1220894B

    公开(公告)日：1966-07-14

    申请号：DEJ0018638

    申请日：1960-08-30

    Applicant: IBM

    Inventor： MARRS RALPH E

    IPC: G11B5/48 ,  G11B5/60 ,  G11B5/82 ,  G11B17/32

    Abstract: 880,342. Magnetic disc recording. INTERNATIONAL BUSINESS MACHINES CORPORATION. Aug. 15, 1960 [Aug. 31, 1959], No. 28117/60. Class 40 (2). In a magnetic disc recording apparatus the disc is pliable and rotates between locating means co-operating with both sides of said disc causing it to comply as necessary to ensure that parts of the disc passing a transducer do not deviate from a required recording position. In one embodiment a disc 11, Fig. 1, of metal, plastic, fibreglass or paper having at least one magnetizable surface carries concentric tracks 14c and a plurality of transducers 16. Air pressure maintains the disc at a uniform spacing from the heads. The air bearing members are so tapered as to produce a wedge-shaped supporting air stream. Additional stability for the pliable disc is provided by a guide disc 31, Fig. 4. Grooves 36 prevent the suction of the rotating disc 11 back to the guide disc.

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