| http://www.w3.org/ns/prov#value | - Referring now to the recording restraining layer 7 in the optical card of the present invention, materials preferably used therefor are those by which the intensity of an energy beam necessary to cause any change (e.g., in reflectance) in the recording layer in its region other than the recording region of the optical card can be made larger than the intensity of an energy beam necessary to cause
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