Optical recording medium and novel azaporphyrin compounds

Details Optical recording medium and novel azaporphyrin compounds Optical recording medium and novel azaporphyrin compounds

2005-11-29

2005-11-29

Kumar, Shailendra (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C428S648000, C430S270210, C430S270160, C430S945000

Reexamination Certificate

active

06969764

ABSTRACT:
An optical recording medium having a recording layer which contains at least one compound selected from the group consisting of mono-, di-, and triazaporphyrin compounds optionally in the form of a metal complex; or an optical recording medium comprising a substrate and formed thereon at least a recording layer containing an organic dye as a main component, characterized in that the organic dye has a first maximum value of absorption at a wavelength λ1of 400 nm or less in the absorption spectrum and has a second maximum value of absorption at a longer-wavelength side than the λ1, and a wavelength band wherein the refractive index (n) and the absorption coefficient (k) of the above organic dye satisfy n≧1.90 and 0.03≦k≦0.30.

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