Quantum Corporation

John S Judge

Robert A Johnson

Jiqun Shao

Warren W Goller

Optical recording articles, such as tapes, and methods of making and using such articles are disclosed.

Optical recording article

A method of multi-channel magnetic tape recording and reading that compensates for track pitch changes. The method utilizes a closed loop servo system to adjust lateral and azimuth position of the recording head assembly. Servo information is written at a slight azimuth angle, adjacent the outer most tracks of a band of tracks. The recording angle being based on a dimensional stability coefficient of the tape. After data is written at the initial angle, the azimuth angle of the head is rotated through a predetermined range of angle during read-only to align the outermost read gaps with the servo tracks. By doing so, signal strength is maximized across all tracks, even if track pitch changes.

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Durham, NH, United States of America

John S Judge