Optical information recording medium
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United States of America Patent
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Nov 11, 2008
Grant Date -
Dec 22, 2005
app pub date -
Aug 22, 2005
filing date -
Oct 25, 2001
priority date (Note) -
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status (Latency Note)
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Abstract
An optical information recording medium including a substrate in which at least one of a groove and a pit is formed; a recording layer located overlying the substrate and including a dye; and a reflection layer located overlying the recording layer, wherein the optical information recording medium has an absorbance curve with an absorbance L of from 10 to 40% against light having a wavelength .lamda. of from 645 nm to 670 nm, a ratio (Lmax/Lmin) of a maximum absorbance Lmax of the absorbance curve to a minimum absorbance Lmin of from 1.0 to 2.0 at the wavelength range of from 645 nm to 670 nm, and a reflectance of from 45 to 85% against the light having a wavelength .lamda. of from 645 nm to 670 nm.
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