Light-sensitive recording medium and process for producing same
AssigneePioneer Electronic Corporation
InventorsHitoshi Taniguchi, Fumio Matsui
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Abstract
A light-sensitive recording medium using a photochromic material produced at a low cost, without necessity of fixing free rotation of bonds in its cis compound and removing its trans compound, is disclosed, the recording medium comprising a substrate having thereon a recording layer which contains a photochromic material capable of cis-trans isomerization upon irradiation with light, wherein not more than 50 mol % of the photochromic material has a trans configuration when the recording layer is in a color-disappearing state.
Claims5
A light-sensitive recording medium comprising a substrate and a recording layer formed thereon, wherein said recording layer contains a photochromic material capable of cis-trans isomerization upon irradiation with light, and not more than 50 mol % of the photochromic material has a trans configuration when the recording layer is in a color-disappearing state which is formed by irradiating the recording layer with light having a wavelength of 360 to 460 nm to cause coloration of the recording layer and then irradiating the recording layer with light having a wavelength of 500 to 600 nm to cause color disappearance in the recording layer.
Dependencies are inferred from the claim text.