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Data disc, method and system of forming the disc

a technology of data discs and forming methods, applied in the field of data discs, can solve the problems of downstream automation processes being negatively impacted, and the molded stacking rings not providing sufficient clearance to allow un-stacking or disc separation by typical automated handling methods

Inactive Publication Date: 2014-03-18
MAGNOLIA LICENSING LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the case of certain intermediate replication processes, the molded stacking rings fail to provide sufficient clearance to allow un-stacking or disc separation by typical automated handling methods.
The flat or smooth adjacent disc surfaces on spindles of 100-150 discs used to transport substrates cause the substrates to stick together such that downstream automation processes are negatively impacted.

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0032]The method of the present principles overcomes a problem of disc substrates sticking together during disc handling, stacking or transport due to the close contact of essentially flat smooth surfaces, which can often be made of similar materials. During disc manufacturing, at least one groove or a groove structure (which may include concentric grooves, a continuous spiral groove, or other groove patterns, among others) is formed on a surface of a substrate structure by using air jets directed on the surface of a resin layer prior to curing. In one example, at least one groove is formed on a surface of a curable material layer of a substrate structure, and used in combination with other features described below to form a data disc having at least two different data formats (also referred to as a “hybrid” disc). The groove structure is formed on a surface such that it will not interfere with data readout or writing, e.g., the grooved surface is preferably not in an optical path o...

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Abstract

A data disc, method and apparatus for forming the disc are disclosed. The data disc includes a first substrate structure bonded to a second substrate structure, with two curable material layers disposed on different sides of at least one of the two substrate structures, and at least one groove formed on a surface of one of the two curable material layers.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims the benefit, under 35 U.S.C. §365 of International Application PCT / US2010 / 001781 filed Jun. 22, 2010 which was published in accordance with PCT Article 21(2) on Dec. 29, 2010 in English and which claims the benefit of U.S. Provisional Patent Application No. 61 / 269,342 filed on Jun. 23, 2009, U.S. Provisional Patent Application No. 61 / 291,825 filed Dec. 31, 2009, U.S. Provisional Patent Application No. 61 / 295,689 filed on Jan. 16, 2010, and PCT Application No. PCT / US2009 / 006370, filed Dec. 3, 2009.TECHNICAL FIELD[0002]The present invention relates to a data disc having two curable material layers on different sides of a substrate structure, and at least one groove on a surface of one of the curable material layers.BACKGROUND[0003]With the development and availability of different data formats for multimedia content, it is often desirable to have contents in different data formats on a single data disc. To manufactur...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): G11B7/24
Inventor TOWN, JOHN MATTHEWBYRNE, PATRICK J.HARTMANN, THOMASHAMERSLEY, ALAN BRUCE
Owner MAGNOLIA LICENSING LLC