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公开(公告)号：EP0106577B1
公开(公告)日：1987-06-10
申请号：EP83305654.2
申请日：1983-09-22
发明人： Ito, Takeo c/o Patent Division , Ido, Tadashi c/o Patent Division , Takeuchi, Hajime c/o Patent Division , Hashimoto, Minoru c/o Patent Division , Maeda, Tatsumi c/o Patent Division , Awa, Masashi c/o Patent Division
IPC分类号： G11B5/62
CPC分类号： G11B5/712 , G11B5/70678 , Y10S428/90 , Y10T428/2991 , Y10T428/2998 , Y10T428/30 , Y10T428/31786
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公开(公告)号：EP0150561B1
公开(公告)日：1990-06-13
申请号：EP84306921.2
申请日：1984-10-10
发明人： Ito, Takeo c/o Patent Division , Takeuchi, Hajime c/o Patent Division , Hashimoto, Minoru c/o Patent Division , Fukaya, Toshio c/o Patent Division , Koishi, Masumi
CPC分类号： G11B5/842 , G11B5/70678 , G11B5/712 , Y10S428/90
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公开(公告)号：EP0297915A2
公开(公告)日：1989-01-04
申请号：EP88306041.0
申请日：1988-06-30
CPC分类号： G11B5/70678 , G11B5/70 , G11B5/702 , Y10S428/90 , Y10T428/24355 , Y10T428/265
摘要： A magnetic recording medium is disclosed which is produced by applying to a non-magnetic substrate a magnetic coating material containing a ferromagnetic powder and a resinous binder. The coating formed of the magnetic coating material exhibits a deformation ratio (in the direction perpendicular to the film surface from the magnetic layer side) is not more than 1 x 10⁻² µm³/mgf. This magnetic recording medium possesses a high surface accuracy, retains a highly desirable runnability for a long period of time, and excels in durability.
摘要翻译： 公开了一种磁记录介质，其通过向非磁性基底施加含有铁磁性粉末和树脂粘合剂的磁性涂层材料而制造。 由磁性涂料形成的涂层表现出的变形率（在与磁性层侧的膜表面垂直的方向上）不超过1×10 -3 m 2 / m 3。 该磁记录介质具有高的表面精度，长时间保持非常理想的运行性能，并且耐久性优异。
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公开(公告)号：EP0297915B1
公开(公告)日：1994-09-21
申请号：EP88306041.0
申请日：1988-06-30
CPC分类号： G11B5/70678 , G11B5/70 , G11B5/702 , Y10S428/90 , Y10T428/24355 , Y10T428/265
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公开(公告)号：EP0150561A1
公开(公告)日：1985-08-07
申请号：EP84306921.2
申请日：1984-10-10
发明人： Ito, Takeo c/o Patent Division , Takeuchi, Hajime c/o Patent Division , Hashimoto, Minoru c/o Patent Division , Fukaya, Toshio c/o Patent Division , Koishi, Masumi
CPC分类号： G11B5/842 , G11B5/70678 , G11B5/712 , Y10S428/90
摘要： A method of manufacturing a magnetic recording medium has a step of mechanically pulverizing and mixing a solid resin binder and a magnetic powder so as to form a mixed powder. Afterwards may a solvent be added to allow the mixture to be applied on a nonmagnetic support.
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公开(公告)号：EP0106577B2
公开(公告)日：1991-07-10
申请号：EP83305654.2
申请日：1983-09-22
发明人： Ito, Takeo c/o Patent Division , Ido, Tadashi c/o Patent Division , Takeuchi, Hajime c/o Patent Division , Hashimoto, Minoru c/o Patent Division , Maeda, Tatsumi c/o Patent Division , Awa, Masashi c/o Patent Division
IPC分类号： G11B5/62
CPC分类号： G11B5/712 , G11B5/70678 , Y10S428/90 , Y10T428/2991 , Y10T428/2998 , Y10T428/30 , Y10T428/31786
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公开(公告)号：EP0297915A3
公开(公告)日：1990-06-06
申请号：EP88306041.0
申请日：1988-06-30
CPC分类号： G11B5/70678 , G11B5/70 , G11B5/702 , Y10S428/90 , Y10T428/24355 , Y10T428/265
摘要： A magnetic recording medium is disclosed which is produced by applying to a non-magnetic substrate a magnetic coating material containing a ferromagnetic powder and a resinous binder. The coating formed of the magnetic coating material exhibits a deformation ratio (in the direction perpendicular to the film surface from the magnetic layer side) is not more than 1 x 10⁻² µm³/mgf. This magnetic recording medium possesses a high surface accuracy, retains a highly desirable runnability for a long period of time, and excels in durability.
摘要翻译： 公开了一种磁记录介质，其通过将包含铁磁粉末和树脂粘合剂的磁性涂层材料涂覆到非磁性基材上而制成。 由磁性涂层材料形成的涂层表现出的变形率（在与磁性层侧垂直于膜表面的方向上）不大于1×10 -2μm3 / mgf。 该磁记录介质具有高表面精度，长期保持非常理想的运转性能，并且耐久性优异。
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公开(公告)号：EP0106577A1
公开(公告)日：1984-04-25
申请号：EP83305654.2
申请日：1983-09-22
发明人： Ito, Takeo c/o Patent Division , Ido, Tadashi c/o Patent Division , Takeuchi, Hajime c/o Patent Division , Hashimoto, Minoru c/o Patent Division , Maeda, Tatsumi c/o Patent Division , Awa, Masashi c/o Patent Division
IPC分类号： G11B5/62
CPC分类号： G11B5/712 , G11B5/70678 , Y10S428/90 , Y10T428/2991 , Y10T428/2998 , Y10T428/30 , Y10T428/31786
摘要： A powder for a magnetic recording medium comprising a plurality of magnetic particles and a coating covering the surfaces of the magnetic particles. The coating is a residue resulting from the thermal decomposition of an organic material. The powder may be manufactured by applying one or more organic materials to the surfaces of a plurality of magnetic particles by dispersing the magnetic particles in a solution containing the organic material. The magnetic particles, having the organic material as a coating, are separated from the solution, and the magnetic particles are heated to a temperature at which the organic material decomposes.
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