Optical recording medium and optical recording method of the same
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United States of America Patent
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Aug 17, 2010
Grant Date -
Sep 14, 2006
app pub date -
Mar 6, 2006
filing date -
Jul 16, 2004
priority date (Note) -
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Abstract
By use of a substrate which can be stably formed and has a relatively small groove depth, a very high density optical recording medium having good recording/reading characteristics is provided. In an optical recording medium of a surface incidence type, in which a reflective layer, a recording layer containing a dye as a main component and a cover layer are sequentially formed on a substrate having guide grooves formed therein, a guide groove part on a far side from a plane of incidence of a recording/reading light beam on the cover layer is set as a recording groove part, and reflected light intensity in a recorded pit portion formed in the recording groove part is increased by a phase shift and is set higher than reflected light intensity in unrecorded.
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