发明名称 MAGNETIC RECORDING MEDIUM AND ITS MANUFACTURING METHOD
摘要 PROBLEM TO BE SOLVED: To provide a magnetic recording medium having a magnetic layer which is high in packing density and is smooth, and to provide its manufacturing method. SOLUTION: The method for manufacturing the magnetic recording medium arranged with the magnetic layer on one major face side of a non-magnetic support includes a magnetic layer forming step of forming a magnetic coating film by applying a magnetic coating material containing magnetic powder, a first binder resin, and a first solvent on the one major face side of the non-magnetic support, and subjecting the magnetic powder included in the magnetic coating material to magnetic field orientation in a prescribed direction while performing drying treatment of removing the first solvent from the magnetic coating material for a prescribed period. A constant rate drying period when the surface temperature Ts of the magnetic coating film is approximately constant is included in the prescribed period and the constant rate drying period is≥0.2 sec. COPYRIGHT: (C)2008,JPO&INPIT
申请公布号 JP2008077815(A) 申请公布日期 2008.04.03
申请号 JP20070166708 申请日期 2007.06.25
申请人 HITACHI MAXELL LTD 发明人 MIAMA NAONOBU;KAWATOKO SHUICHI;SHIOKAWA MAKOTO;KAWAKAMI SHINJI;YAMAZAKI MASANORI;TSUKAMOTO HITOSHI;KUZE SADAMU
分类号 G11B5/845;G11B5/70;G11B5/702 主分类号 G11B5/845
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