Claims
- 1. A spool of magnetic recording tape comprising:an elongated continuous web of flexible plastic substrate material having two edges and defining a front major surface and a back major surface, a magnetic storage medium formed on the front major surface, the magnetic storage medium for defining a multiplicity of longitudinal data recording and playback tracks, each said track having a nominal lateral location relative to the other tracks, a predetermined optically manifested track servo pattern defined on the back major surface, the pattern for indicating actual lateral displacement of the tape away from a nominal lateral location of a said track during tape movement across a read/write head.
- 2. The magnetic recording tape set forth in claim 1 wherein the optically manifested track servo pattern is applied during manufacture of the tape.
- 3. The magnetic recording tape set forth in claim 1 wherein the optical pattern is formed by a laser beam.
Parent Case Info
This is a continuation of copending application Ser. No. 09/775,893 filed Feb. 5, 2001 which is a continuation of Ser. No. 09/577,017 filed on May 22, 2000 (U.S. Pat. No. 6,236,529), which is a continuation of 08/980,723 filed on Dec. 1, 1997 (U.S. Pat. No. 6,084,740)
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Entry |
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Continuations (3)
|
Number |
Date |
Country |
Parent |
09/775893 |
Feb 2001 |
US |
Child |
10/116403 |
|
US |
Parent |
09/577017 |
May 2000 |
US |
Child |
09/775893 |
|
US |
Parent |
08/980723 |
Dec 1997 |
US |
Child |
09/577017 |
|
US |