To obtain an optical recording medium having good reflectance and error rate, good recording property without deterioration of medium characteristics with time at a low production cost by a reflection layer essentially comprising a compd. of Ti and N and a protective layer on a recording layer.
An org. dye soln. is applied by spin coating to form a recording layer of 100nm thickness on a substrate having guide grooves. Then a reflection layer of 100nm thickness is formed by DC sputtering by using a TiN sputtering target having ≥99% purity and Ar sputtering gas. In this process, the proportion of N in the reflection layer is controlled to 50-200 atomic % to Ti. Then a UV curing resin is applied thereon by spin coating and irradiated with UV rays to form a protective layer of 6μm thickness. Thus, by forming the reflection layer essentially comprising a compd. of Ti and N, an optical recording medium showing almost no deterioration in characteristics of the medium but having good recording property can be obtd. at a low production cost.
HONDA KAZU
MIYASHITA TAKEHIRO
FUKUDA SHIN
