Optical information recording mother disc and method of producing the same

摘要

An optical information recording disc having pits in a first film formed on one of major surfaces of the disc is uniformly covered with a suitable second film, whereby the size of each pits is corrected. When the disc is to be used as a mother disc for production of replicas, at least the wall of each pit is covered by a third layer having continuously increased thickness towards the bottom of the pit so that a peeling off of an intermediate transfer disc from the mother disc is facilitated.