Patent ID: 7666473

Claim:
A method for producing an optical recording medium comprising a plurality of recording layers on a disc-shaped substrate on which information can be recorded holographically, and intermediate layers provided between the recording layers, the method comprising: applying a first coating solution containing a photo-isomerizable component, which records information holographically by photo-isomerization onto a surface of one of the substrate or the intermediate layer, which is being held horizontally; allowing the coating solution to flow toward a periphery of the substrate by a centrifugal force generated by rotating the substrate while a film is dried, to provide the recording layer; applying a second coating solution containing a photo-isomerizable component that can be isomerized by radiation having the same wavelength as radiation used for isomerizing a photo-isomerizable component contained in the recording layer and incapable of dissolving the recording layer, to a surface of the recording layer; and allowing the second coating solution to flow toward the periphery of the substrate by a centrifugal force generated by rotating the substrate while a film is dried, to provide an intermediate layer that cannot be dissolved by the first coating solution.