OPTICAL INFORMATION RECORDING MEDIUM, METHOD FOR REGENERATING IT AND METHOD FOR RECORDING

Japanese Patent JP3899770

B2

PROBLEM TO BE SOLVED: To improve stability of an amorphous mark and to deal with a linear speed of a wide range by forming a phase change type recording layer of a specific composition in an optical information recording medium having at least the phase change type recording layer on a substrate such as a high density optical disk or the like utilizing a rewritable phase change medium.
SOLUTION: A phase change type recording layer of a rewritable disk such as a high density optical disk or the like is formed of a composition represented by the formula ((SbxTe1-x)yGe1-y)zM1-z, wherein x is number of a range of 0.7≤x≤0.9, y is number of a range of 0.8≤y<1, z is number of a range of 0.88≤z<1, and M is In and/or Ga. In order to record a mark length-modulated information on such an optical information recording medium, a crystal state portion is processed in an unrecorded and erased state, an amorphous portion is processed in a recorded state, and an amorphous portion between recording marks is processed to be irradiated with a recording light of crystallizable erasing power.

JPH0743618	[Name of invention] Double-sided reversible heat-sensitive recording sheet
JP2003291539	HEAT-SENSITIVE RECORDING MATERIAL
JP2003025743	IMAGE FORMING MATERIAL

Takashi Ohno

JP2000053146A

March 28, 2007

February 29, 2000

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Mitsubishi Chemical Media Co., Ltd.

B41M5/26; C22C12/00; G11B7/0045; G11B7/0055; G11B7/243; G11B7/2433; (IPC1-7): B41M5/26; G11B7/0045; G11B7/24; //C22C12/00

JP5174423A
JP10258572A
JP5229259A
JP61258787A
JP63147689A

Hasegawa Soji

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