Optical recording medium and optical recording method using the

Details Optical recording medium and optical recording method using the Optical recording medium and optical recording method using the

1987-03-19

1989-10-03

Michl, Paul R.

Radiation imagery chemistry: process, composition, or product th

Imaging affecting physical property of radiation sensitive...

Radiation sensitive composition or product or process of making

430495, 430945, 430964, 3461351, G03C 172

Patent

active

048716499

ABSTRACT:
An optical recording medium wherein recording information has been recorded as pits, comprises an absorptive layer and a reflective layer placed thereon, the absorptive layer having, on the surface, concave portions thermally deformed by heat generated upon irradiation of light beams, and the reflective layer having concave pits formed by deformation as a consequence of the thermal deformation of the absorptive layer and covering said concave portions of the absorptive layer in such a state that the concave portions are not exposed.
An optical recording method comprises irradiating an optical recording medium having an absorptive layer and a reflective layer placed thereon, with light beams to generate a heat, allowing the heat to cause the thermal deformation of the absortive layer to form concave portions on the surface of the absorptive layer, deforming the reflective layer as a consequence of the thermal deformation of the absorptive layer, thereby allowing the deformed reflective layer to cover the concave portions of the absorptive layer in such a state that the concave portions are not exposed and to form concave pits.

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patent: 4629668 (1986-12-01), Hamersley et al.
patent: 4652498 (1987-03-01), Wolf et al.
patent: 4670332 (1987-06-01), Werner et al.

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