Dual-metal reflective layer recordable/erasable optical media

Details Dual-metal reflective layer recordable/erasable optical media Dual-metal reflective layer recordable/erasable optical media

1990-07-25

1992-02-11

Levy, Stuart S.

Dynamic information storage or retrieval

Storage medium structure

Layered

369284, 369286, 3461351, 346 76L, 430945, 365124, 365126, G11B 724, G01D 1534, G11C 1304

Patent

active

050880870

ABSTRACT:
Recordable/erasable optical storage media are disclosed. The medium of the present invention generally comprises a rigid substrate, an expansion layer, a retention layer, and a dual-metal reflective layer. A single, active layer may be substituted for the expansion and retention layers. A protective layer may or may not be present. The dual-metal reflective layer comprises a first metal sublayer and a second metal sublayer with a graded first metal/second metal alloy at the interface of the first metal sublayer and the second metal sublayer. Methods for applying the dual-metal reflective layer to a polymer-coated substrate and substrates produced by such methods are also provided.

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