Optical recording medium, recording and reproducing method...

Details Optical recording medium, recording and reproducing method... Optical recording medium, recording and reproducing method...

2011-06-21

2011-06-21

Mulvaney, Elizabeth (Department: 1785)

Stock material or miscellaneous articles

Circular sheet or circular blank

C428S064400, C428S064800, C430S270140

Reexamination Certificate

active

07964260

ABSTRACT:
The present invention is aimed to provide a high-performance single-sided double-layer optical recording medium with reduced crosstalk between recording marks, wherein favorable recording signal properties are obtained even from the second recording layer located more distant from the substrate to which the light is applied, and reproducing method thereof, and an optical recording and reproducing apparatus. The optical recording medium possesses the following aspects: the optical recording medium comprises a first substrate, a first information layer, an intermediate layer, a second information layer and a second substrate in this order; the first information layer comprises a first recording layer; the second information layer comprises a second reflective layer, a second recording layer with an organic dye and a protective layer; and the pyrolysis temperature range, the DTA peak width of the thermal analysis on the organic dye in the second recording layer, is 45° C. or less.

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