Optical tape embossing drum and optical tape embossing drum shim
AssigneesSun Microsystems, Inc., Sun Microsystems Technology Ltd.
InventorsFaramarz Mahnad, John Ritter
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Abstract
Disclosed herein are aspects of optical tape technology, tape manufacturing, and tape usage. Methods and systems of tape technology disclose optical tape media including: configurations, formulations, markings, and structure; optical tape manufacturing methods, systems, and apparatus methods and systems including: curing processes, coating methods, embossing, drums, testing, tracking alignment stamper strip; optical tape methods and systems including: pick up head adapted for the disclosed optical tape; and optical tape uses including optical storage media devices for multimedia applications
Claims18
-3. (canceled)
An optical tape embossing drum comprising:
- a cylinder;
- and
- a plurality of shims on the cylinder, each of the shims having a pattern of generally parallel land and groove formed therein and at least one fiducial mark positioned relative to the pattern, at least some of the fiducial marks being generally circumferentially aligned about the cylinder.
An optical tape embossing drum shim having an edge comprising:
- an embossing panel having, formed therein, (i) a pattern of generally parallel land and groove defining a plurality of generally parallel tracks exhibiting fields of modulated wobble and (ii) at least two fiducial marks adjacent to the edge and aligned along an axis that is generally perpendicular to the tracks.
An optical tape embossing drum comprising:
- a cylinder;
- and
- a plurality of ferromagnetic shims magnetically held on the cylinder, each of the shims having a pattern of generally parallel land and groove formed therein.
Dependencies are inferred from the claim text.