Patent ID: 8105750
Filing Date: 2012-01-31
Classification: G11B,Y10S,Y10T

Abstract:
1. An optical recording medium comprising: a first recording layer; a semi-transmissive reflective layer; an optically-transparent material layer; and a second recording layer and a reflective layer formed on an optically-transparent substrate, wherein the first recording layer includes an organic dye shown by a general formula expressed by a chemical formula 1 below (in chemical formula 1, R1 is an alkyl group of carbon number 1 to 4; R2, R3 respectively are alkyl groups of carbon number 1 to 4, benzyl groups or groups forming 3 to 6 membered rings by being coupled; Y1, Y2 respectively are organic groups independently; and X is Cl0 wherein the second recording layer includes an organic dye according to the chemical formula 3 below, and an organic dye according to the chemical formula 4 below: