Method of recording information

Details Method of recording information Method of recording information

1996-04-23

1997-10-07

McPherson, John A.

Radiation imagery chemistry: process, composition, or product th

Erasable imaging

43027013, 430945, 369284, G11B 700

Patent

active

056746490

ABSTRACT:
On one surface of a disk substrate, a first dielectric layer, a thin recording layer, a second dielectric layer and a reflecting layer are cumulatively formed. The second dielectric layer is thinner than the first dielectric layer and is 35-70 nm thick. The reflecting layer is 70-120 nm thick. The total thickness of the four layers is 250-430 nm. The compressive stress of the layers is offset by tensile stress generated by an overcoat resin protective layer, formed on the reflecting layer. A method of using the optical recording medium applies the MCAV (Modified Constant Angular Velocity) recording method which records information by changing recording frequencies in accordance with linear velocity. The linear velocity is 5-12 m/s. A ratio of an inner circumference recording pulse width to an outer circumference recording pulse width is 1.2 or more.

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Abstract of JP 4-141488, "Optical Recording Medium and Manufacture Thereof", Katsumi et al. (May 1992).
Abstract of JP 4-358334, "Optical Information Recording Medium", Hidemi etal. (Dec. 1992).

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