Patent ID: 7144677

Claim:
An optical recording method comprising a step for irradiating an optical recording medium with a recording light comprising a recording signal, wherein the optical recording medium comprises a substrate having guide grooves thereon and a recording layer disposed on or above the surface of the substrate where the guide grooves are provided, and the recording light is irradiated to the substrate of the optical recording medium to form a recording mark having a modulated pit length on a recording layer of the recordable optical recording medium, the recording layer comprises a dye material which has a thermal decomposition temperature of 200° C. to less than 450° C. above the substrate, wherein the shortest recording signal is a single recording pulse (3T pulse), and lengths of the shortest recording signal pulse at an outer circumference of the recordable optical recording medium and at an inner circumference are adjusted by a factor X such that the length of the shortest recording signal pulse at the outer circumference of the recordable optical recording medium is longer than the length of the shortest recording signal pulse at the inner circumference, the recording signal is a compact disc (CD) signal, the recording is carried out at a constant linear speed, and the shortest signal recording pulse (3T pulse) length is recorded as (3−X)×231.4 ns, where 0.25<0.08 ×Vw/Vr+X<1.25, Vw is the recording speed, and Vr is the standard reproducing speed for CD (1.2 m/s–1.4 mis), and satisfies −2<X<2.