公开(公告)号：DE2608213A1

公开(公告)日：1976-10-14

申请号：DE2608213

申请日：1976-02-28

Applicant: IBM

Inventor： GRIFFITHS DONALD ERIC ,  KOESTNER JOSEPH HENRY ,  NORTON DAVID GIBBONS

IPC: G11B23/03 ,  G11B17/02 ,  G11B17/038 ,  G11B17/32 ,  G11B17/34 ,  G11B23/00 ,  G11B5/016 ,  G11B17/22

Abstract: Semi-rigid washers are coaxially disposed to form an air-permeable spindle for coaxially supporting flexible record disks. A plurality of such washers and disks is coaxially stacked to construct a flexible disk file. Washers preferably have an annular shoulder with a depth slightly different than the thickness of the record disks for firmly supporting and aligning same in the coaxial stack. Alternatively, disks may be adhesively secured to a radial outward portion of each washer. Additionally, each washer has a plurality of radially extending air passageways for facilitating radial air movement which controls the stack of flexible record disks. A radial inward portion of each washer abuts each adjacent washer for forming a firm axial stack of disks. A rigid stabilizing plate at each axial end completes the assembly.

公开(公告)号：DE2736947A1

公开(公告)日：1978-03-09

申请号：DE2736947

申请日：1977-08-17

Applicant: IBM

Inventor： NORTON DAVID GIBBONS ,  WRIGHT GARY THORUP

IPC: G11B17/32 ,  G11B5/016

Abstract: Improved magnetic recording apparatus having a rotating flexible registration disc disposed on a flat plate, characterized in that: said flat plate has an elongated throat that opens into said flexible recording disk and has a substantial radial length; a transducer disposed movably to perform radial displacements in said throat; to perform transduction operations with respect to said flexible registration disk; and downward traction means having pneumatic upstream and downstream pneumatic support means, extending from said flat plate towards said flexible recording memory disk and disposed respectively along said throat, opposite sides thereof, for communicating a pulling force downwardly on said flexible recording disk, towards said transducer. (Machine-translation by Google Translate, not legally binding)

公开(公告)号：DE2651834A1

公开(公告)日：1977-05-26

申请号：DE2651834

申请日：1976-11-13

Applicant: IBM

Inventor： GRIFFITHS DONALD ERIC ,  NORTON DAVID GIBBONS

IPC: G11B17/30 ,  G11B17/02 ,  G11B5/016

Abstract: Selectively altering air flow generates an access opening for a record surface on one of a large plurality of flexible record storage disks coaxially supported on a common spindle for rotation. Air flow through the interstices between the disks usually is sufficient to stabilize rotation of the disks. To generate a transducer access opening the air flow on one axial side of a record disk to be accessed, which includes a record surface, is altered in a manner that disks axially adjacent and facing the record surface tend to axially move together at their periphery, resulting in a peripheral transducer access opening adjacent a stabilized record disk. In a preferred form of the invention, the axial extent of the altered air flow is limited to a predetermined portion of the stack of disks for minimizing the volume of air flow change. For dual sided recording, the air flow is altered at either side of the record disk to be accessed.

公开(公告)号：MX144735A

公开(公告)日：1981-11-18

申请号：MX17335678

申请日：1978-05-08

Applicant: IBM

Inventor： GRIFFITHS DONALD ERIC ,  KOESTNER JOSEPH HENRY ,  NORTON DAVID GIBBONS

IPC: G11B17/00

公开(公告)号：DE2517915A1

公开(公告)日：1976-01-08

申请号：DE2517915

申请日：1975-04-23

Applicant: IBM

Inventor： GRIFFITHS DONALD ERIC ,  KOESTNER JOSEPH HENRY ,  NORTON DAVID GIBBONS

IPC: G11B17/32 ,  G11B5/02 ,  G11B5/55 ,  G11B17/02 ,  G11B17/22 ,  G11B17/30 ,  G11B21/02 ,  G11B25/04 ,  G11B5/016

公开(公告)号：CH617283A5

公开(公告)日：1980-05-14

申请号：CH804877

申请日：1977-06-30

Applicant: IBM

Inventor： NORTON DAVID GIBBONS ,  WRIGHT GARY THORUP

IPC: G11B17/32 ,  G11B5/60

Abstract: Improved magnetic recording apparatus having a rotating flexible registration disc disposed on a flat plate, characterized in that: said flat plate has an elongated throat that opens into said flexible recording disk and has a substantial radial length; a transducer disposed movably to perform radial displacements in said throat; to perform transduction operations with respect to said flexible registration disk; and downward traction means having pneumatic upstream and downstream pneumatic support means, extending from said flat plate towards said flexible recording memory disk and disposed respectively along said throat, opposite sides thereof, for communicating a pulling force downwardly on said flexible recording disk, towards said transducer. (Machine-translation by Google Translate, not legally binding)

公开(公告)号：CH607225A5

公开(公告)日：1978-11-30

申请号：CH1445776

申请日：1976-11-17

Applicant: IBM

Inventor： GRIFFITHS DONALD ERIC ,  NORTON DAVID GIBBONS

IPC: G11B17/30 ,  G11B17/02 ,  G11B17/22

Abstract: Selectively altering air flow generates an access opening for a record surface on one of a large plurality of flexible record storage disks coaxially supported on a common spindle for rotation. Air flow through the interstices between the disks usually is sufficient to stabilize rotation of the disks. To generate a transducer access opening the air flow on one axial side of a record disk to be accessed, which includes a record surface, is altered in a manner that disks axially adjacent and facing the record surface tend to axially move together at their periphery, resulting in a peripheral transducer access opening adjacent a stabilized record disk. In a preferred form of the invention, the axial extent of the altered air flow is limited to a predetermined portion of the stack of disks for minimizing the volume of air flow change. For dual sided recording, the air flow is altered at either side of the record disk to be accessed.