Abstract: In a method in the related art in which recording is performed using the data recording area and the drawing area, the areas being different from each other, since a surface of a data recording area on which recording is performed using laser light is different from a surface of a drawing area on which recording is performed using laser light, a medium is turned round for drawing after data have been recorded, therefore there has been a problem that much time is taken. An optical recording medium having a heat generating layer that generates heat and a coloring layer having an optical characteristic that is changed by heat caused by the heat generating layer is provided to realize recording of data and recording of drawing-images by laser light irradiation in the same direction.

Abstract: An optical information recording medium includes: a substrate having a pre-groove formed thereon; an optical recording layer containing a dye; and a light reflecting layer. The medium has a ratio of a modulation degree at a maximum recording speed to a modulation degree at a minimum recording speed, which is from 1.1 to 1.7.

Abstract: An optical information recording medium has light interference layers including a recording layer on a substrate. The recording layer includes an organic dye and a photostabilizer which is, for example, the compound of formula 1 wherein at least one of R1 to R8 represents a substituted alkyl group having a terminal cyano group, with the others represent other substituents; Y represents a monovalent or divalent cation; and Xm? represents a monovalent or divalent anion.