Method for forming a servo pattern on a magnetic tape
First Claim
1. A method for producing, on a magnetic tape having a magnetic recording side and a non-recording side opposite the recording side, a plurality of servo tracks capable of being optically detected independently from one another, the method comprisingpassing at least a portion of the magnetic tape through a work area;
- and forming the servo tracks and non-servo tracks on a surface of the non-recording side of the portion of the magnetic tape as the tape passes through the work area, the servo tracks being grouped in bands, each comprised of two or more servo tracks, each of the bands being delimited by at least one non-servo track at upper and lower portions thereof, each of the bands corresponding to a data track on the magnetic recording side, the bands being separated from one another by a first distance and servo tracks in the bands being separated from one another by a second distance, the first distance being greater than the second distance.
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Accused Products
Abstract
The systems, methods and products of the invention include systems and methods for manufacturing servo tracks on a magnetic tape. In one aspect, the invention includes systems for manufacturing magnetic tapes having servo tracks thereon wherein the servo tracks are optically detectable and are capable of being processed by a servo control system for maintaining alignment of a magnetic recording head with the data tracks on the recording side of the magnetic tape. In one practice, the manufacturing systems described herein engrave the servo tracks onto the non-recording side of a magnetic tape by directing a laser beam at the non-recording side of the magnetic tape. In another practice, the manufacturing systems described herein engrave the servo tracks onto the magnetic side of a magnetic tape by directing a laser beam at the magnetic side of the magnetic tape. Such engraved patterns can act as optical servo tracks for maintaining alignment of the recording head with the data tracks on the magnetic tape.
274 Citations
21 Claims
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1. A method for producing, on a magnetic tape having a magnetic recording side and a non-recording side opposite the recording side, a plurality of servo tracks capable of being optically detected independently from one another, the method comprising
passing at least a portion of the magnetic tape through a work area; - and
forming the servo tracks and non-servo tracks on a surface of the non-recording side of the portion of the magnetic tape as the tape passes through the work area, the servo tracks being grouped in bands, each comprised of two or more servo tracks, each of the bands being delimited by at least one non-servo track at upper and lower portions thereof, each of the bands corresponding to a data track on the magnetic recording side, the bands being separated from one another by a first distance and servo tracks in the bands being separated from one another by a second distance, the first distance being greater than the second distance. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification