Patent ID: 6517749
Filing Date: 2003-02-11
Classification: B29D,Y10S

Abstract:
A method of producing a disc comprising at least one substrate and at least one information layer on said substrate, said method comprising:bringing said substrate in parallel relationship with a stamper comprising a negative of the information layer to be formed on said substrate whereby a gap is located between said substrate and said stamper; injecting a lacquer into said gap between said substrate and said stamper; rotating said stamper and said substrate at the same speed; moving said substrate and said stamper relative to each other and rotating said stamper and said substrate at the same speed to spin out said lacquer; curing the layer of lacquer formed between said substrate and said stamper; and removing said stamper, whilst leaving said layer of cured lacquer with the information layer formed therein onto said substrate, wherein before said bringing of said substrate in parallel relationship with said stamper, providing said substrate with a first information layer and a semi-reflective layer located thereon, whereby said layer of lacquer is formed onto said semi-reflective layer.