Optical information recording medium, recording and reproduction methods using the same, optical information recording device, and optical information reproduction device

An optical information recording medium storing information which can be reproduced by irradiation of a light beam comprising:

• a temperature responsive layer whose reflectance and/or transmittance changes with a change in temperature caused by the irradiation of a light beam and arranged so that a low transmittance wavelength domain generated by absorption of a shorter wavelength side at an ordinary temperature includes a wavelength of a reproduction light beam, and the low transmittance wavelength domain Is shifted toward a longer wavelength side by a certain degree of rise in temperature of the temperature responsive layer, so that a spectral transmittance and/or a spectral reflectance with respect to the wavelength of a reproduction light beam decreases.

An optical information recording medium for storing information and for allowing reproduction of the information by irradiation of a light beam, comprising:

• a temperature responsive layer consisting of a zinc oxide film whose reflectance and/or transmittance changes with a change in temperature caused by the irradiation of a light beam.

An optical information recording medium comprising:

• a temperature responsive layer whose reflectance and/or transmittance changes with a change in temperature caused by the irradiation of a light beam is arranged so that a low transmittance wavelength domain generated by absorption of a shorter wavelength side at an ordinary temperature includes a wavelength of a reproduction light beam, and the low transmittance wavelength domain is shifted toward a longer wavelength side by a certain degree of rise in temperature of the temperature responsive layer, so that a spectral transmittance and/or a spectral reflectance with respect to the wavelength of a reproduction light beam decreases.