Patent ID: 6835270
Filing Date: 2004-12-28
Classification: B29C,B29D,B29L,G11B

Abstract:
A process for producing an optical disk by laminating a first substrate formed by a first molding machine and a second substrate formed by a second molding machine, which process comprising:(1) molding a pair of the first substrate and the second substrate of a transparent resin by the first molding machine and the second molding machine respectively, wherein at least one of the substrates has irregularities on its one main surface; (2) forming a metal thin film on said one main surface having the irregularities, and then (3) laminating the pair of the substrates while the metal thin film is located inside and bonding the substrates with an adhesive which is supplied between the substrates, wherein a difference in a mold temperature between the first molding machine and the second molding machine is established in the range between 2Â° C. and 6Â° C.