Optical recording medium and recording method therefor.

摘要

An optical recording medium having a light-transmitting recording layer (7) and a reflecting layer (8) formed on the rear surface of the recording layer, and a method of recording data on the medium by irradiating the medium with a light beam and thereby forming pits in the recording layer. The thickness of the recording layer in an unrecorded state is set to a predetermined value at which the reflectance of light at the surface of the recording layer becomes maximum in connection with the thickness, or to a smaller value. For recording data, the reflectance of light at the surface of the recording layer is greatly reduced by the irradiation with the beam, whereby the data can be recorded with a high modulation degree.