Magnetic media with embedded optical servo tracks
First Claim
Patent Images
1. A storage medium, comprising:
- a magnetic recording tape including a magnetic recording layer and having a major first side and a major second side; and
a plurality of optically detectable indicia embedded in a servo layer, the indicia disposed during formation between the first side and the second side and apart from a surface of the first side and a surface of the second side, wherein the indicia are optically accessible from at least one of the first side and the second side of the tape.
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Abstract
A storage medium is provided that includes a magnetic recording tape having a first side and a second side, and a plurality of optically detectable indicia embedded in a servo layer disposed between the first side and the second side of the tape. The optical reflectivity and/or phase of the indicia are different from the surrounding servo layer, and the indicia are optically accessible from at least one of the first side and the second side of the tape. The servo layer may include an organic material wherein the indicia are created with an infrared or ultra violet light source.
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Citations
37 Claims
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1. A storage medium, comprising:
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a magnetic recording tape including a magnetic recording layer and having a major first side and a major second side; and a plurality of optically detectable indicia embedded in a servo layer, the indicia disposed during formation between the first side and the second side and apart from a surface of the first side and a surface of the second side, wherein the indicia are optically accessible from at least one of the first side and the second side of the tape. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A storage medium, comprising:
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a magnetic recording tape having a major first side and a major second side; a magnetic recording layer accessible from the first side of the tape; and a plurality of optically detectable indicia embedded between the first side and the second side and disposed during formation apart from a surface of the first side and a surface of the second side, wherein the indicia are optically accessible from the first side. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A method for forming a servo track, comprising:
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forming optical indicia within a magnetic recording tape from a first major side of the tape, wherein the tape includes the first major side and an opposite second major side, and the optical indicia are formed below a surface of the first side of the tape and apart from the surface of the first side of the tape. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
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Specification