US 7,018,694 B2 · Optical recording medium, method for manufacturing the same and target used for sputtering process

Abstract

An optical recording medium includes a recording layer containing an alloy represented by a general formula: (TixM1x)yM2y, where element M1 is Si or Al, element M2 is an element selected from the group consisting of Si, Al and Fe and different from the element M1, x is equal to or larger than 0.3 and equal to or smaller than 0.8, and y is equal to or larger than 0.75 and equal to or smaller than 1. The thus constituted optical recording medium only places minimal load on the global environment.

Claims18

Dependent claims

An optical recording medium comprising a recording layer containing an alloy represented by a general formula:

(TixM1x)yM2y, where element M1 is Si or Al, element M2 is an element different from the element M1, x is equal to or larger than 0.3 and equal to or smaller than 0.8, and y is equal to or larger than 0.75 and equal to or smaller than 1.

Dependencies are inferred from the claim text.

Facts

Application

10/805,727Filed 22 Mar 2004

Priority

JP 2003-08074624 Mar 2003

Published

US 2004/0190435 A130 Sep 2004

Granted

28 Mar 2006

Term ends

Not estimatedThe source records don’t support an estimate.

Classification14 codes

G11B 7/243
Of recording layers: comprising inorganic materials only, e.g. ablative layers
C23C 14/185
On other inorganic substrates: by cathodic sputtering
C23C 14/3414
Cathode assembly for sputtering apparatus, e.g. Target: metallurgical or chemical aspects of target preparation, e.g. casting, powder metallurgy
G11B 7/24038
Recording layers: multiple laminated recording layers

Optical recording medium, method for manufacturing the same and target used for sputtering process

Life of this patent

Optical recording medium, method for manufacturing the same and target used for sputtering process

Life of this patent

Abstract

Claims18