layer itself has good durability as emphasized above the disk of the present invention subjected to recording locking treatment cannot be rewritten due to curing of the recording layer even if again exposed to a recording laser therefore after recording data the optical recording medium according to the present invention is protected from being rewritten by operator error or intentional manipulation the preferred embodiments of the present invention will now be further described with reference to specific examples following are examples which illustrate procedures including the best mode for practicing the invention these examples should not be construed as limiting all percentages are by weight and all solvent mixture proportions are by volume unless otherwise noted an epoxy resin trademark eocn 1020 commercially available from nippon kayaku co ltd japan a curing agent trademark psm 4261 commercially available from nippon kayaku co ltd japan and a catalyst tpp were mixed at composition ratios given in the following table 1 to this mixture was added 0 5 g of dye commercially available from nippon kanko shikiso kenkyusho k k japan to give a solution the solution was coated on an amorphous polyolelin substrate 1 trademark zeonex 280 commercially available from nippon zeon co ltd japan having pregrooves to form a recording layer 1 with a thickness of 0 5 u03bcm for a reflective layer 3 au was deposited in a thickness of 1000 u00e5 sd 17 trademark commercially available from dainippon ink amp chemicals co ltd japan was used for a protective layer 4 with a thickness of 10 u03bcm the recording media thus obtained were recorded using an audio cd recorder trademark rpd 1000 commercially available from pioneer electric corp japan and then subjected to thermal treatment at 70 u00b0 c for 30 minutes to cure the recording layer for.