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STORAGE MEDIUM MANUFACTURING METHOD, AND INFORMATION STORAGE MASTER DISC MANUFACTURING APPARATUS
STORAGE MEDIUM MANUFACTURING METHOD, AND INFORMATION STORAGE MASTER DISC MANUFACTURING APPARATUS
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机译:储存介质制造方法和信息储存主盘制造装置
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摘要
PROBLEM TO BE SOLVED: To record information in a depth direction of a groove as an information storage medium where information is stored by forming irregular patterns.;SOLUTION: Inorganic resist sensitive to a thermal reaction associated with the irradiation with a laser beam, preferably an incomplete oxide of a transition metal, is used as a resist material of a master disc. A Laser beam is applied to the master disc by changing power at least in three steps based on input information, and the depth of a thermal reaction section in the inorganic resist is changed for recording information. By developing the master disc, a master disc where input information is recorded by a plurality of stages of grooves can be produced.;COPYRIGHT: (C)2009,JPO&INPIT
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