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AssigneesMitsui Chemicals, Inc., Yamamoto Chemicals, Inc.
InventorsAkira Ogiso, Shinobu Inoue, Taizo Nishimoto, Hisashi Tsukahara, Tsutami Misawa, Tadashi Koike, Norihiko Mihara, Shunsuke Murayama, Ryousuke Nara
Estimating the term…
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 λ1 of 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.
An optical recording medium containing, in the recording layer, at least one compound selected from the group of mono-, di-, and triazaporphyrin compounds which may form metal complexes.
A compound represented by the general formula (1):
A mixture of azaporphyrin compounds represented by the general formulae (11) to (13):
An optical recording medium comprising a recording layer containing at least organic dye as the main component on a supporting substrate,
Dependencies are inferred from the claim text.