Two new types of stampers have been developed in order to improve the quality of optical discs and to simplify the process for manufacturing stampers. One is a plastic stamper which consists of a PMMA substrate and a photo-polymer resin layer having fine patterns such as pits and grooves on its surface. The other is a quartz stamper which has the pits and grooves with different depth formed on the surface of the quartz substrate by reactive ion etching process. Both these stampers can be made in a short processing time, and their quality is found to be higher than that of the conventional one. These stampers are transparent for ultraviolet light, so that they may also be used for making a replica disc with non-transparent substrate such as an Al substrate.

Date Published: 2 June 1988
PDF: 6 pages
Proc. SPIE 0899, Optical Storage Technology and Applications, (2 June 1988); doi: 10.1117/12.944614

Published in SPIE Proceedings Vol. 0899:
Optical Storage Technology and Applications
Donald B. Carlin; Albert A. Jamberdino; Yoshito Tsunoda, Editor(s)