JP2005100493A5 - - Google Patents

Claims (7)

A first substrate having at least a first recording layer having an organic dye as a main component and a guide groove provided with a first reflecting layer; and a second reflecting layer having an organic dye as a main component at least on the surface. A second substrate having a guide groove provided with a second recording layer , a transparent intermediate layer, and recording and reproduction of signal information formed on the first and second recording layers from the first substrate surface side. An optical recording medium for performing optical recording, wherein light absorption at the optical recording wavelength of the second recording layer is greater than light absorption at the optical recording wavelength of the first recording layer. A first recording layer having at least a first recording layer having an organic dye as a main component on the surface and a guide groove in which a first reflecting layer is sequentially formed; and a second reflecting layer and an organic dye as a main component at least on the surface. The second recording layer and the second substrate having a guide groove in which the inorganic protective layer is sequentially formed are bonded with the substrate surface facing outside through the organic transparent intermediate layer, and from the first substrate surface side, An optical recording medium for recording and reproducing signal information formed on the first and second recording layers, wherein light absorption at the optical recording wavelength of the second recording layer is light absorption at the optical recording wavelength of the first recording layer. An optical recording medium characterized by being larger than the above. 3. The optical recording medium according to claim 1, wherein the maximum absorption wavelength of the second recording layer is longer than the maximum absorption wavelength of the first recording layer. The optical recording medium according to claim 1, wherein the second recording layer has a maximum absorption wavelength of 605 to 620 nm. The optical recording medium according to any one of claims 1 to 4, wherein the guide groove depth of the second substrate is 200 to 500 mm. The optical recording medium according to claim 1, wherein the inorganic protective layer contains a ZnS—Si compound as a main component. A silver alloy is used as the second reflective layer material, and the second recording layer is formed by coating film forming means.
The method for producing an optical recording medium according to claim 1, wherein: