Method of manfacturing a mould and providing it with a backing and mould manufactured according to the invention
AssigneePhilips and DuPont Optical Company
InventorsHermann Koop, Claudia Pechtheiden-Meier
Life of this patent
Estimating the term…
Abstract
In a method of manufacturing a mould and providing it with a backing, the mould is derived from a parent information carrier by an electroforming process, after which electroforming process and prior to its separation from the parent information carrier the mould is provided with a backing. In order to reduce the cycle times and to improve the mechanical stability, the backing is formed by a UV-curable lacquer which is applied in liquid form and is distributed over the back of the mould, which is subsequently cured by exposure to ultraviolet light.
Claims12
A method of manufacturing a mould (2) and providing said mould with a backing, which mould after at least one further multiplication step serves for manufacturing disc-shaped information carriers (1), and is derived from a parent information carrier (1) in an electroforming process in which an information structure (2) formed in the parent information carrier (1) is transferred to the mould (3), after which electroforming process and prior to its separation from the parent information carrier (1) the mould is provided at its back (4) with a backing (5) which serves for mechanical reinforcement, in which method the backing (5) is formed in the form of a UV-curable lacquer which is applied in liquid form, which is distributed over the back (4) of the mould (3), and which is subsequently cured by exposure to ultraviolet light.
Dependencies are inferred from the claim text.