Recording member and process for recording
AssigneeCanon Kabushiki Kaisha
InventorsMasanao Kasai, Youko Oikawa, Hiroshi Ito, Hiroshi Matsuno
Life of this patent
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Abstract
A recording member for recording a laser beam bearing an information by deformation of a recording layer comprises a support, a recording layer of a non-metallic material and a protecting layer which is not destroyed by the laser beam.
Claims4
A recording member for recording by applying a laser beam to remove a part of a recording layer by melting and/or vaporization whch comprises a support, a recording layer overlying the support, and a protecting layer overlying the recording layer, said recording layer being composed of a laminate including a sulphur compound layer and a metal layer and being about 0.01 - 1 micron in thickness, the metal layer underlying the sulphur compound layer in the direction of application of the laser beam, and said protecting layer being not substantially destroyed by the application of the laser beam for recording.
A process for recording which comprises, applying a laser beam bearing an information to be recorded to remove a part of a recording layer which comprises a support, a recording layer composed of a laminate including a sulphur compound layer and a metal layer and being about 0.01 to 1 micron in thickness and overlying the support, the metal layer underlying the sulphur layer in the direction of application of the laser beam, and a protecting layer overlying the recording layer, under conditions whereby only the recording layer is deformed and the protecting layer remains substantially intact.
Dependencies are inferred from the claim text.