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公开(公告)号：NO148010C
公开(公告)日：1983-07-20
申请号：NO753235
申请日：1975-09-23
Applicant: IBM
Inventor： FOWLER THOMAS MARSHALL , FRASER HARVEY REED JR , HAUKE FRANCIS EDWARD
Abstract: Various pneumatic means are shown for lifting tape locally away from a rotating head as the rotating head moves. Only the tape in the vicinity of the head is lifted. The lifting is done with minimal pneumatic force, and done only locally about the head so that recovery time for read/write operations after a lifting operation is short, Air to lift the tape can be blown from passages around the head, from passages through the head, or from passages in front of the head. Local lifting about the head is enhanced by insuring that the pneumatic air flow to lift the tape does not easily dissipate in air space between the mandrel and the head rotor.
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公开(公告)号：FI752718A
公开(公告)日：1976-03-31
申请号：FI752718
申请日：1975-09-29
Applicant: IBM
Inventor： FOWLER THOMAS MARSHALL , FRASER JR HARVEY REED , HAUKE FRANCIS EDWARD
Abstract: Various pneumatic means are shown for lifting tape locally away from a rotating head as the rotating head moves. Only the tape in the vicinity of the head is lifted. The lifting is done with minimal pneumatic force, and done only locally about the head so that recovery time for read/write operations after a lifting operation is short, Air to lift the tape can be blown from passages around the head, from passages through the head, or from passages in front of the head. Local lifting about the head is enhanced by insuring that the pneumatic air flow to lift the tape does not easily dissipate in air space between the mandrel and the head rotor.
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公开(公告)号：DE2539942A1
公开(公告)日：1976-08-26
申请号：DE2539942
申请日：1975-09-09
Applicant: IBM
Inventor： FOWLER THOMAS MARSHALL , FRASER JUN HARVEY REED , HAUKE FRANCIS EDWARD
Abstract: Various pneumatic means are shown for lifting tape locally away from a rotating head as the rotating head moves. Only the tape in the vicinity of the head is lifted. The lifting is done with minimal pneumatic force, and done only locally about the head so that recovery time for read/write operations after a lifting operation is short, Air to lift the tape can be blown from passages around the head, from passages through the head, or from passages in front of the head. Local lifting about the head is enhanced by insuring that the pneumatic air flow to lift the tape does not easily dissipate in air space between the mandrel and the head rotor.
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公开(公告)号：DE2530338A1
公开(公告)日：1976-01-29
申请号：DE2530338
申请日：1975-07-08
Applicant: IBM
Inventor： BAUMANN GERALD WALTER , FRASER JUN HARVEY REED , HAUKE FRANCIS EDWARD
Abstract: A rotating head magnetic tape recording apparatus wherein a helical wrap of magnetic recording tape is formed about a cylindrical mandrel and the headwheel. The headwheel is of a larger radius than the mandrel; thus the headwheel protrudes or penetrates beyond the adjacent mandrel surfaces. This headwheel penetration operates to (1) compensate for mandrel misalignment, if any, and (2) stress the tape in the localized track coincident with the headwheel's path. A magnetic head is mounted on the headwheel to protrude or penetrate radially outward therefrom. The head includes a surface profile causing; th head to fly relative to the tape's recording surface, i.e., a thin air film surrounds the head. The combination of the protruding headwheel and the protruding head produces a stable recording platform at the tape/head interface. The headwheel produces localized tape stress coincident with the headwheel's path. The head produces a moving tent of additional localized tape stress at the tape/head interface.
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Patent Agency Ranking5.发明专利
公开(公告)号：DE3063638D1
公开(公告)日：1983-07-14
申请号：DE3063638
申请日：1980-01-04
Applicant: IBM
Inventor： ARTER NELSON KAY , HAUKE FRANCIS EDWARD , WEBER JESSE ARTHUR
Abstract: Transducer head to data track alignment is corrected in a helical scan rotating head magnetic tape unit by displacing the head in a direction perpendicular to the direction of rotation of the head under the control of an error signal indicative of misalignment between the head and a desired data track. The error signal is generated in response to the sensing by the head of a longitudinal servo track record defining the locations of oblique data tracks. Displacement of the head is effected by mounting the head on a piezoelectric actuator controlled by the error signal. By successively sensing a series of longitudinal servo track records on the tape, alignment of the head with an oblique data track is repeatedly corrected as the head scans the data track. In this manner the head is caused to follow a skewed of deformed data track.
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公开(公告)号：FI62192C
公开(公告)日：1982-11-10
申请号：FI752718
申请日：1975-09-29
Applicant: IBM
Inventor： FOWLER THOMAS MARSHALL , FRASER JR HARVEY REED , HAUKE FRANCIS EDWARD
Abstract: Various pneumatic means are shown for lifting tape locally away from a rotating head as the rotating head moves. Only the tape in the vicinity of the head is lifted. The lifting is done with minimal pneumatic force, and done only locally about the head so that recovery time for read/write operations after a lifting operation is short, Air to lift the tape can be blown from passages around the head, from passages through the head, or from passages in front of the head. Local lifting about the head is enhanced by insuring that the pneumatic air flow to lift the tape does not easily dissipate in air space between the mandrel and the head rotor.
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公开(公告)号：FI62192B
公开(公告)日：1982-07-30
申请号：FI752718
申请日：1975-09-29
Applicant: IBM
Inventor： FOWLER THOMAS MARSHALL , FRASER JR HARVEY REED , HAUKE FRANCIS EDWARD
Abstract: Various pneumatic means are shown for lifting tape locally away from a rotating head as the rotating head moves. Only the tape in the vicinity of the head is lifted. The lifting is done with minimal pneumatic force, and done only locally about the head so that recovery time for read/write operations after a lifting operation is short, Air to lift the tape can be blown from passages around the head, from passages through the head, or from passages in front of the head. Local lifting about the head is enhanced by insuring that the pneumatic air flow to lift the tape does not easily dissipate in air space between the mandrel and the head rotor.
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公开(公告)号：NO148010B
公开(公告)日：1983-04-11
申请号：NO753235
申请日：1975-09-23
Applicant: IBM
Inventor： FOWLER THOMAS MARSHALL , FRASER HARVEY REED JR , HAUKE FRANCIS EDWARD
Abstract: Various pneumatic means are shown for lifting tape locally away from a rotating head as the rotating head moves. Only the tape in the vicinity of the head is lifted. The lifting is done with minimal pneumatic force, and done only locally about the head so that recovery time for read/write operations after a lifting operation is short, Air to lift the tape can be blown from passages around the head, from passages through the head, or from passages in front of the head. Local lifting about the head is enhanced by insuring that the pneumatic air flow to lift the tape does not easily dissipate in air space between the mandrel and the head rotor.
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公开(公告)号：AU8383975A
公开(公告)日：1977-02-17
申请号：AU8383975
申请日：1975-08-11
Applicant: IBM
Inventor： FOWLER THOMAS MARSHALL , FRASER HARVEY REED JR , HAUKE FRANCIS EDWARD
Abstract: Various pneumatic means are shown for lifting tape locally away from a rotating head as the rotating head moves. Only the tape in the vicinity of the head is lifted. The lifting is done with minimal pneumatic force, and done only locally about the head so that recovery time for read/write operations after a lifting operation is short, Air to lift the tape can be blown from passages around the head, from passages through the head, or from passages in front of the head. Local lifting about the head is enhanced by insuring that the pneumatic air flow to lift the tape does not easily dissipate in air space between the mandrel and the head rotor.
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