Optical memory medium and a method of recording information...

Details Optical memory medium and a method of recording information... Optical memory medium and a method of recording information...

G - Physics

11

B

G11B 7/24 (2006.01) G11B 7/00 (2006.01) G11B 7/0045 (2006.01) G11B 7/005 (2006.01) G11B 7/0055 (2006.01) G11B 7/244 (2006.01)

Patent

CA 2090136

An optical memory medium having a transparent substrate, a recording layer and a reflective layer, the recording layer and the reflective layer being formed in that order on the transparent substrate. The recording layer is a diarylethene derivative dispersed in a non-polar polymeric binder. The optical memory medium with such a recording layer fully utilizes advantageous properties of the diarylethene derivative, such as good thermal stability of the recorded state, excellent durability against repeated color changes between colored and colorless states, and a photosensitivity to semiconductor laser light with a wavelength of 780 nm. The optical memory medium enables high-density recording and non-destructive readout.

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