Methods of recording and reproducing information using an optical recording medium
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United States of America Patent
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Jan 7, 1997
Grant Date -
N/A
app pub date -
Dec 15, 1994
filing date -
Dec 16, 1993
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Abstract
An optical recording medium is provided with a masking layer on a side of a recording layer for receiving a reproducing beam. The masking layer is prepared from that containing photochromic dye molecules having absorption at the wavelength of the reproducing beam and causing a photon mode reaction by absorbing the reproducing beam to be reduced in absorption.
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