Information recording medium
AssigneeRicoh Company, Ltd.
InventorsKatsuyuki Yamada, Yukio Ide, Makoto Harigaya, Hiroko Iwasaki
Life of this patent
Estimating the term…
Abstract
An information recording medium comprising a substrate, and a recording layer formed thereon which comprises (a) a carbon-based material and (b) an optically reversible material whose optical characteristics can be reversibly changed, with the thermal decomposition temperature of the carbon-based material being higher than the melting point of the optically reversible material.
Claims3
An information recording medium capable of recording information reversibly with application of electromagnetic waves with different powers or wavelengths, comprising a substrate, and a recording layer formed thereon which comprises (a) a carbon-based material and (b) an optically reversible material whose optical characteristics can be reversibly changed, with the thermal decomposition temperature of said carbon-based material being higher than the melting point of said optically reversible material, wherein said carbon-based material is a polymer prepared by subjecting a pigment to plasma polymerization.
Dependencies are inferred from the claim text.