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AssigneesMitsui Toatsu Chemicals, Inc., Yamamoto Chemicals, Inc.
InventorsTadashi Koike, Hideki Umehara, Yuji Inatomi, Takeshi Tsuda, Sumio Hirose
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An optical information recording medium is here disclosed which comprises a transparent substrate, a recording layer comprising an organic dyestuff on which information can be written by a laser beam, a reflective layer and a protective layer formed in this order on the substrate, the aforesaid optical information recording medium being characterized by containing a pit.edge control agent for the formation of recording pits, particularly a dyestuff thermal decomposition accelerator in the recording layer. By the addition of the pit.edge control agent, deviation properties and jitter properties can be remarkably improved, whereby a CD-R medium having a low error rate and good recording properties can be provided. In consequence, stable compatibility with a commercial CD player can be secured.
An optical information recording medium which comprises a transparent substrate, a recording layer comprising an organic dyestuff on which information can be written by a laser beam, a reflective layer and a protective layer formed in this order on said substrate, said optical information recording medium containing a pit.edge control agent for the formation of recording pits in said recording layer, wherein said pit.edge control agent is a thermal decomposition accelerator for the dyestuff, said thermal decomposition accelerator is a metallic compound having substantially no absorption at a wavelength of a recording laser beam, wherein the recording layer comprising the organic dyestuff is formed by a coating method using a solvent for the dyestuff, and said metallic compound is soluble in the solvent.
Dependencies are inferred from the claim text.