Method for producing master for optical information recording media

摘要

Production of a master comprises exposing a master substrate (104) comprising a substrate (101), a thermosensitive material layer (102), and a recording-auxiliary layer (103), to form a state-changed portion in the thermosensitive material layer; and etching under a condition that an etching rate of the state-changed portion in the thermosensitive material layer is different from an etching rate of a state-unchanged portion. Independent claims are also included for: (a) a master for an optical information recording medium produced; (b) a stamper produced using the master; and (c) an optical information recording medium produced using the master.