发明名称 MULTILAYERED PHASE CHANGE INFORMATION RECORDING MEDIUM AND RECORDING AND REPRODUCING METHOD FOR INFORMATION USING THE SAME
摘要 <P>PROBLEM TO BE SOLVED: To provide a multilayered phase change recording medium which makes a cooling effect obtainable and has excellent overwriting characteristics even if a reflection layer is thin. <P>SOLUTION: The multilayered phase change information recording medium having &ge;2 information layers provided with recording layers capable of recording the information by a phase change between a crystalline state and amorphous state by incidence of light consists of at least one information layer except the information layer formed on the deepest side viewed from the side where the light is made incident, a first protective layer, a recording layer, a second protective layer, a reflection layer and a heat spread layer and the heat spread layer is mainly composed of tin oxide and at least antimony oxide is included therein. <P>COPYRIGHT: (C)2004,JPO
申请公布号 JP2004047038(A) 申请公布日期 2004.02.12
申请号 JP20020206455 申请日期 2002.07.16
申请人 RICOH CO LTD 发明人 IWASA HIROYUKI;SHINOZUKA MICHIAKI
分类号 G11B7/24;G11B7/004;G11B7/243;G11B7/258 主分类号 G11B7/24
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