Dynamic information storage or retrieval – Storage medium structure – Specified material
Reexamination Certificate
2006-06-06
2006-06-06
Miller, Brian E. (Department: 2652)
Dynamic information storage or retrieval
Storage medium structure
Specified material
C369S284000, C430S270180
Reexamination Certificate
active
07058001
ABSTRACT:
A recording medium comprises a substrate and a recording layer overlaid on the substrate. The recording layer comprises a material, which has properties such that, when recording light having a predetermined wavelength λ1is irradiated to the material, the material is capable of being caused to change into a fluorescent material and such that, when excitation light having a wavelength λ2is then irradiated to the thus formed fluorescent material, the fluorescent material is capable of being caused to produce fluorescence. The wavelength λ1of the recording light and the wavelength λ2of the excitation light may be identical or different. The substrate may be constituted of a material having properties such that, when the excitation light is irradiated to the material, the material does not produce fluorescence having a wavelength identical with the wavelength of the fluorescence produced by the fluorescent material.
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Inagaki Yoshio
Naya Masayuki
Battaglia Michael V.
Miller Brian E.
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