Optical recording medium, and optical recording method and optical recording apparatus thereof

An optical recording method comprising the step of recording at a wavelength of 600 nm to 720 nm in the optical recording medium,

• wherein the optical recording medium comprises:
• a substrate, and
• a recording layer on the substrate comprising squarylium metal chelate compounds,
• wherein the recording layer comprises a mixture comprised of squarylium metal chelate compounds having two or more different metals.

An optical recording apparatus comprising a recording medium therein,

• wherein the optical recording apparatus performs a recording and reproducing by irradiating a light to the recording medium;
• and
• the optical recording medium comprises:
• a substrate, and
• a recording layer on the substrate comprising squarylium metal chelate compounds,
• wherein the recording layer comprises a mixture comprised of squarylium metal chelate compounds having two or more different metals.