Method and apparatus for producing cover layers in Blu-ray...

Details Method and apparatus for producing cover layers in Blu-ray... Method and apparatus for producing cover layers in Blu-ray...

2007-10-02

2007-10-02

Tadesse, Yewebdar (Department: 1734)

Coating apparatus

With means to centrifuge work

C118S063000, C118S323000, C118S505000

Reexamination Certificate

active

11182687

ABSTRACT:
Techniques for a cover layer with uniform thickness are disclosed. The cover layer is formed with a type of material, such as glue, in hardened form. In one embodiment, a certain amount of the material in liquid form is dispensed onto a dispensing structure. After the dispensing structure is engaged to hold a disc, the dispensing structure and the disc as a whole unit to be rotated at a predefined speed. The dispensed material on the dispensing structure is dispersed evenly onto the surface of the disc as result of the centrifugal force. A curing process (e.g., using UV lighting) is then engaged to harden the material near the edge of the disc to prevent the dispersed material from shrinking.

REFERENCES:
patent: 5935673 (1999-08-01), Mueller
patent: 2003/0039797 (2003-02-01), Chang et al.
patent: 2005/0287291 (2005-12-01), Kang et al.
patent: 05062408 (1993-03-01), None
English Translated Abstract and Detailed Description of JP 05-062408.

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