公开(公告)号：CA1040305A

公开(公告)日：1978-10-10

申请号：CA227639

申请日：1975-05-23

Applicant: IBM

Inventor： BROCK GEORGE W ,  HAHN FREDERICK W JR

IPC: G11B5/53 ,  G11B5/52 ,  G11B15/64 ,  G11B5/60

Abstract: A rotating head magnetic tape transport wherein a helical wrap of flexible magnetic tape is formed about a stationary tubular mandrel and a rotatable headwheel which carries a slotted head of generally spherical flying contour.

公开(公告)号：CA1038493A

公开(公告)日：1978-09-12

申请号：CA206207

申请日：1974-08-02

Applicant: IBM

Inventor： BROCK GEORGE W ,  SHELLEDY FRANK B ,  SMITH SIDNEY H ,  WILLS ARTHUR B

IPC: G11B5/33 ,  G11B5/39 ,  G11B5/16 ,  G11B5/22

Abstract: A magnetoresistive (HR) head with an unusually desirable spatial resolution includes a shield on each side of the MR element. Information is carried on a magnetizable medium as recorded magnetic areas. The shields and spaced apart by a distance on the order of and less than the shortest recorded wavelength for which the head is meant to be used. The HR element and the shields have their edges nearest the medium in a common plane perpendicular to the vertical component of a signal from the recorded area. An additional shunt bias layer may be provided immediately adjacent and coextensive the MR element, and the head may serve one or many tracks.

公开(公告)号：CA906643A

公开(公告)日：1972-08-01

申请号：CA906643D

Applicant: IBM

Inventor： BROCK GEORGE W ,  BATE GEOFFREY