Optical disk
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United States of America Patent
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Sep 14, 2010
Grant Date -
Feb 9, 2006
app pub date -
Aug 5, 2005
filing date -
Aug 9, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An optical disk comprising two layers including a signal recording layer and an image recording layer further comprises a metal reflective layer formed on a surface of the image recording layer on the incidence side of laser light. The image recording layer is capable of forming a visible image in response to an increase in temperature caused by application of laser light to the metal reflective layer. The visible image is capable of being visually observed from a side opposite to the incidence side.
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