| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optical information recording medium on the label surface of which visible information can be recorded by irradiation of a low output laser beam using a laser device for recording/reproducing electronic information without exerting a thermal influence and the like to the electronic information recorded on the medium. <P>SOLUTION: In the optical information recording medium 100 which has a structure wherein a substrate 101, an electronic information recording layer 102, a reflection layer 103, a protective layer 104, a visible information recording layer 105, and an over coat layer forming an outermost layer are successively layered, and wherein the surface roughness of the outermost layer on the label surface side is 1/2 as rough as the wavelength (λ) of the laser beam 108 or less, focusing of the low output laser beam is satisfactorily performed, and visible information is satisfactorily recorded in the visible information recording layer. <P>COPYRIGHT: (C)2004,JPO&NCIPI |
