Patent ID: 8133565
Filing Date: 2012-03-13
Classification: G11B,Y10T

Abstract:
1. An optical recording medium comprising a substrate and a reflective layer, a first dielectric layer, a recording layer, a second dielectric layer and a light-transmission layer formed in this order on the substrate, wherein the recording layer is decomposable by heat at a time of recording to achieve recording of the optical recording medium, wherein the optical recording medium further comprises a third dielectric layer between the second dielectric layer and the light-transmission layer, and wherein the recording layer comprises a material A that decomposes at an arrival temperature of the recording layer by heat at a time of recording; and a material B that undergoes a chemical reaction at the arrival temperature of the recording layer by heat at the time of recording, wherein the third dielectric layer has a hardness greater than the hardness of the second dielectric layer.