Optical information recording medium, manufacturing method of optical information recording medium, and optical information recording method
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United States of America Patent
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Issued Date -
Jun 9, 2005
app pub date -
Dec 6, 2004
filing date -
Dec 9, 2003
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The present invention provides an optical information recording medium that has on a substrate a pit or recording layer and a cover layer in this order and in which laser light is irradiated from a cover layer side to perform both recording and reproducing or either one of recording and reproducing, wherein a surface on which the laser light is irradiated of the cover layer has a projected portion having a height in the range of 3 to 90 .mu.m; a manufacturing method of the optical information recording medium wherein the projected portion in the optical information recording medium is disposed by means of a printing method; and an optical information recording method wherein, in the case of the optical information recording medium having a recording layer, laser light having a wavelength in the range of 100 to 600 nm is irradiated from a cover layer side and causes the recording layer to physically or chemically change to record.
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