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1. 发明授权

US08613977B2 Magnetic recording medium and method for manufacturing the same 失效
标题翻译：磁记录介质及其制造方法
公开(公告)号：US08613977B2
公开(公告)日：2013-12-24
申请号：US11898757
申请日：2007-09-14
申请人： Hisanobu Mikamo , Hidekazu Kawatoko , Makoto Shiokawa , Shinji Kawakami , Masanori Yamasaki , Hitoshi Tsukamoto , Sadamu Kuse
发明人： Hisanobu Mikamo , Hidekazu Kawatoko , Makoto Shiokawa , Shinji Kawakami , Masanori Yamasaki , Hitoshi Tsukamoto , Sadamu Kuse
IPC分类号： B05D5/12
CPC分类号： G11B5/842
摘要： A method for manufacturing a magnetic recording medium of the present invention includes a magnetic layer forming step in which a drying process is performed. The drying process includes: a pre-heating stage in which a magnetic coating film is heated until the surface temperature of the magnetic coating film stops rising and reaches a substantially constant temperature; a constant rate drying stage that is performed after the pre-heating stage in which the surface temperature of the magnetic coating film is held substantially constant; and a falling rate drying stage that is performed after the constant rate drying stage in which the surface temperature of the magnetic coating film is increased to be higher than the surface temperature during the constant rate drying stage to harden the magnetic coating film. The constant rate drying period in which the constant rate drying stage is performed is 0.2 seconds or more. The first solvent is made of one solvent or two or more solvents having different boiling points, and the difference (Tb−Ts) between the boiling point Tb of the solvent having the lowest boiling point among the solvents contained in the first solvent and the surface temperature Ts of the magnetic coating film during the constant rate drying period is 1 to 50° C.
摘要翻译：本发明的磁记录介质的制造方法包括进行干燥处理的磁性层形成工序。干燥过程包括：预热阶段，其中加热磁性涂膜直到磁性涂膜的表面温度停止上升并达到基本恒定的温度; 在预热阶段之后进行恒定速率干燥阶段，其中磁性涂膜的表面温度保持在大致恒定的范围; 以及在恒速干燥阶段之后，在恒速干燥阶段使磁性涂膜的表面温度升高到高于表面温度的固定速率干燥阶段之后进行硬化处理的落下率干燥阶段。进行恒定速率干燥阶段的恒定速率干燥时间为0.2秒以上。第一溶剂由一种溶剂或两种或更多种具有不同沸点的溶剂制成，并且在第一溶剂中包含的溶剂中具有最低沸点的溶剂的沸点Tb与表面之间的差（Tb-Ts）恒速干燥期间的磁性涂膜的温度Ts为1〜50℃。

2. 发明申请

US20080070066A1 Magnetic recording medium and method for manufacturing the same 失效
标题翻译：磁记录介质及其制造方法
公开(公告)号：US20080070066A1
公开(公告)日：2008-03-20
申请号：US11898757
申请日：2007-09-14
申请人： Hisanobu Mikamo , Hidekazu Kawatoko , Makoto Shiokawa , Shinji Kawakami , Masanori Yamasaki , Hitoshi Tsukamoto , Sadamu Kuse
发明人： Hisanobu Mikamo , Hidekazu Kawatoko , Makoto Shiokawa , Shinji Kawakami , Masanori Yamasaki , Hitoshi Tsukamoto , Sadamu Kuse
IPC分类号： G11B5/842 , B05D5/12
CPC分类号： G11B5/842
摘要： A method for manufacturing a magnetic recording medium of the present invention includes a magnetic layer forming step in which a drying process is performed. The drying process includes: a pre-heating stage in which a magnetic coating film is heated until the surface temperature of the magnetic coating film stops rising and reaches a substantially constant temperature; a constant rate drying stage that is performed after the pre-heating stage in which the surface temperature of the magnetic coating film is held substantially constant; and a falling rate drying stage that is performed after the constant rate drying stage in which the surface temperature of the magnetic coating film is increased to be higher than the surface temperature during the constant rate drying stage to harden the magnetic coating film. The constant rate drying period in which the constant rate drying stage is performed is 0.2 seconds or more. The first solvent is made of one solvent or two or more solvents having different boiling points, and the difference (Tb−Ts) between the boiling point Tb of the solvent having the lowest boiling point among the solvents contained in the first solvent and the surface temperature Ts of the magnetic coating film during the constant rate drying period is 1 to 50° C.
摘要翻译：本发明的磁记录介质的制造方法包括进行干燥处理的磁性层形成工序。干燥过程包括：预热阶段，其中加热磁性涂膜直到磁性涂膜的表面温度停止上升并达到基本恒定的温度; 在预热阶段之后进行恒定速率干燥阶段，其中磁性涂膜的表面温度保持在大致恒定的范围; 以及在恒速干燥阶段之后，在恒速干燥阶段使磁性涂膜的表面温度升高到高于表面温度的固定速率干燥阶段之后进行硬化处理的落下率干燥阶段。进行恒定速率干燥阶段的恒定速率干燥时间为0.2秒以上。第一溶剂由一种溶剂或两种或更多种沸点不同的溶剂制成，沸点T < 在恒定速率干燥期间，第一溶剂中所含溶剂中具有最低沸点的溶剂的b b和磁性涂膜的表面温度T S 1 / S 2为1〜50℃ C。

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