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

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...

Full description

Saved in:
Bibliographic Details
Main Authors FAN KAI LEUNG, YEUNG MING SANG
Format Patent
LanguageEnglish
Published 02.10.2007
Subjects
APPARATUS FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL
APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
ATOMISING APPARATUS
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
NOZZLES
PERFORMING OPERATIONS
PHYSICS
SPRAYING APPARATUS
SPRAYING OR ATOMISING IN GENERAL
TRANSPORTING
Online AccessGet full text

Cover

More Information
Summary: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.
Bibliography:Application Number: US20050182687