PURPOSE: To obtain an information recording medium of a sticking type by constituting recording layers of a polymer blend which generates a state change between a compatible state and phase sepn. state with a temp. change and providing light absorptive layers in contact with the recording layers.

CONSTITUTION: This information recording medium has the air sandwich structure formed by joining two sheets of disk-shaped substrates 11a, 11b via an annular inside spacer 13 and an annular outside spacer 14 and providing the recording layers 12a, 12b to the inside front of at least one of such substrates. The recording layers of such medium consist of the polymer blend which can generate the state change between the compatible state and the phase sepn. state with the temp. change. The light absorptive layers each consisting of a light absorptive material are provided in contact with the recording layers. The polymer blend is a mixture composed of ≥2 kinds of polymers and can generate the state change between the compatible state and the phase sepn. state. The cloud point thereof is preferably in a 60W400°C range and particularly preferably in a 80W300°C range.