US 6,309,485 B1 · Method and apparatus for manufacture of laminated optical disc

Abstract

A method and apparatus for the manufacture of laminated compact disc. When forming an adhesive layer between a first substrate and a second substrate, and laminating the first substrate and second substrate to produce a disc, temperature and other conditions are adjusted based on the adhesive layer thickness of the manufactured optical disc, thus the viscosity of adhesive is changed to match each process. Accordingly, high quality discs can be consistently manufactured, and the operating efficiency of the manufacturing apparatus can be improved. Moreover, an optical disc free of bubbles mixed in the adhesive layer of a laminated optical disc can be stably manufactured.

Claims26

Dependent claims

A laminated optical disc manufacturing apparatus comprising:

an adhesive applying device adapted to apply an adhesive to a first substrate in a predetermined amount;
a superimposing device adapted to superimpose a second substrate on the adhesive applied to the first substrate, such that an adhesive layer is formed between the first substrate and the second substrate;
a layer thickness measuring device adapted to measure an actual thickness of the adhesive layer between the first substrate and the second substrate;
a layer thickness difference detection device adapted to determine an adhesive layer thickness difference between the measured adhesive layer thickness and a target adhesive layer thickness;
and
a control device adapted to control at least said adhesive applying device based on the adhesive layer thickness difference.

3 more elements

A laminated optical disc manufacturing method for manufacturing an optical disc the method comprising:

applying an adhesive on a first substrate;
superimposing a second substrate on the first substrate, such that an adhesive layer is formed between the second substrate and the first substrate;
measuring an actual thickness of the adhesive layer between the first substrate and the second substrate;
detecting a layer thickness difference between the adhesive layer actual thickness and a target adhesive layer thickness;
and
controlling the applying of the adhesive based on the detected layer thickness difference.

3 more elements

Dependencies are inferred from the claim text.

Method and apparatus for manufacture of laminated optical disc

Life of this patent

Method and apparatus for manufacture of laminated optical disc

Life of this patent

Abstract

Claims26