Optical recording medium containing quinophthalone dyes

摘要

The present invention relates to an optical recording medium having a recording layer, a reflective layer and a protective layer on a substrate, wherein a quinophthalone compound represented by the following formula (1) is contained in the above recording layer. The use of the quinophthalone compound or a mixture of the quinophthalone compound and a photoabsorbing compound having an absorption maximum in a wavelength falling in a range of 550 to 900 nm in the recording layer makes it possible to provide an interchangeable optical recording medium not only capable of recording and reproducing with a laser having a wavelength falling in a range of 480 to 600 nm to which attentions are paid as a wavelength for a high density optical recording medium, but also capable of recording and reproducing as well with red lasers having wavelengths of 630 nm and 680 nm which are being used in recent years and a near infrared laser having a wavelength of 780 nm which has so far been used.