Methods of manufacture of master disk for making a die for press

Details Methods of manufacture of master disk for making a die for press Methods of manufacture of master disk for making a die for press

1996-03-01

1998-06-09

Beck, Shrive

Coating processes

Latent image formed or developed

427532, 427553, 427569, 427572, 427156, 427160, 427256, 427272, 427287, 427259, 427261, 427264, 427409, 427418, 369109, 430321, 430945, B41M 500, B05D 500, B05D 306

Patent

active

057630020

ABSTRACT:
Master disks for providing dies in particular for pressing optical disks, methods of manufacturing same, pressing dies obtained from such master disks and optical disks obtained from the latter and such pressing dies, the master disks consisting of a support carrying at its surface a succession of microcups representative of the information to be duplicated and consisting of a hard, conducting material reflecting in the near infrared range and selected from a zirconium, hafnium or titanium nitride or carbonitride, a hard ceramic reflecting in the near infrared range and conducting at the surface only and a hard glass reflecting in the near infrared range and conducting at the surface only.

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