Magnetic tape head system method specifying parameters for near-constant resolution at varying tape velocities
AssigneeInternational Business Machines Corporation
InventorRobert Glenn Biskeborn
Life of this patent
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Abstract
A magnetic tape head system and associated method are disclosed. Included is one or more head assemblies each including a base with a row bar coupled thereto with a head situated therein for defining a tape bearing surface defining a tape wrap angle with respect to a horizontal plane. A length of the tape bearing surface is between approximately 0.57 millimeters and 0.7 millimeters and the tape wrap angle is between approximately 0.5 degrees and 1.3 degrees such that a resolution of the magnetic tape head system is substantially independent of a velocity of the tape.
Claims14
A method for specifying manufacture of a magnetic tape head system having two individual head assemblies coupled together in opposing relationship, each head assembly including a row bar with a head situated therein defining a tape bearing surface which defines a tape wrap angle, the method comprising:
- specifying a tape wrap angle defined between a horizontal plane and a plane in which each tape bearing surface resides, wherein the selected tape wrap angle is between approximately 0.5 degrees and 1.3 degrees;
- and
- specifying a distance between end edges of the row bars to be between approximately 0.6 millimeters and 0.8 millimeters.
A method for manufacturing a magnetic tape head system, comprising:
- coupling together two individual head assemblies in opposing relationship, each head assembly including a row bar with a head situated therein for defining a tape bearing surface which defines a tape wrap angle with respect to a horizontal plane;
- wherein a length of the tape bearing surface and the tape wrap angle is selected such that a resolution of the magnetic tape head system is substantially independent of a velocity of a tape,
- wherein the tape wrap angle is defined between a horizontal plane and a plane in which the tape bearing surface resides, wherein the tape wrap angle is between approximately 0.5 degrees and 1.3 degrees,
- wherein a distance between end edges of the row bars is between approximately 0.6 millimeters and 0.8 millimeters.
A method for specifying manufacture of a magnetic tape head system having two individual head assemblies coupled together in opposing relationship each head assembly including a row bar with a head situated therein defining a tape bearing surface which defines a tape wrap angle, the method comprising:
- specifying a length of each tape bearing surface of the head such that a resolution of the magnetic tape head system is substantially independent of a velocity of a tape passing thereacross, wherein the length of each tape bearing surface is between approximately 0.57 millimeters and 0.7 millimeters;
- and
- specifying a tape wrap angle defined between a horizontal plane and a plane in which the tape bearing surface resides, wherein the tape wrap angle is between approximately 0.5 degrees and 1.3 degrees,
- wherein a distance between end edges of the row bars is between approximately 0.6 millimeters and 0.8 millimeters.
Dependencies are inferred from the claim text.