Patent ID: 8530140
Filing Date: 2013-09-10
Classification: C01G,C01P,C23C,G11B,Y10T

Abstract:
1. An optical information recording medium comprising at least a recording layer that allows information to be recorded thereon and/or reproduced therefrom by being irradiated with a laser beam, a metallic reflective layer, and a transmittance adjusting layer in this order from a laser beam incident side, wherein the transmittance adjusting layer contains Bi, Ti, O, and M, wherein M is at least one element selected from C, Si, Zr, Hf, Y, Cr, Zn, Ga, Co, In, Ta, Ag, Cu, Pd, Ge, Sb, and Te, and with a composition of Bi, Ti, O, and M contained in the transmittance adjusting layer being denoted as Bi