Optical recording medium and optical recording method

Details Optical recording medium and optical recording method Optical recording medium and optical recording method

2007-07-17

2007-07-17

Mulvaney, Elizabeth (Department: 1774)

Stock material or miscellaneous articles

Circular sheet or circular blank

C428S064400, C428S064800, C430S270140

Reexamination Certificate

active

11041744

ABSTRACT:
An organic dye type optical recording medium capable of recording or reading information by a blue laser having a shorter wavelength, is provided.An optical recording medium comprising a substrate and a recording layer capable of recording or reading information by a laser, formed on the substrate, characterized in that the recording layer contains a compound represented by the following formula (1):wherein each of R1to R6which are independent of one another, is a hydrogen atom or a linear or branched alkyl group which may be substituted, each of k and n which are independent of each other, is an integer of from 0 to 2, provided 0≦k+n≦4, each of l and m which are independent of each other, is 0 or 1, provided 1≦l+m≦2, each of rings A and B which are independent of each other, is an aromatic ring which may have optional substituents, provided that such optional substituents may be bonded to each other to form a ring.

REFERENCES:
patent: 6815033 (2004-11-01), Miyazawa et al.
patent: 2000-43423 (2000-02-01), None
patent: 2002-160452 (2002-06-01), None

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