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1. 发明公开

EP0389994A3 A magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：EP0389994A3
公开(公告)日：1991-06-12
申请号：EP90105605.1
申请日：1990-03-24
申请人： KONICA CORPORATION
发明人： Kawahara, Setsuko , Nakano, Yasushi , Koyama, Noboru , Umemura, Masahiro
IPC分类号： G11B5/714 , G11B5/716 , G11B5/702
CPC分类号： G11B5/702 , G11B5/714 , G11B5/716 , Y10S428/90 , Y10T428/25 , Y10T428/257 , Y10T428/31609
摘要： A magnetic recording medium which has improved electromagnetic conversion characteristics and running ability and is suitable for high-density recording. The magnetic recording medium has at least two magnetic layers which are provided on one side of a support. One of said magnetic layers contains magnetic particles having an aspect ratio of from 3 to less than 8 and the other one contains magnetic particles having an aspect ratio of from 8 to 12.
摘要翻译：一种磁记录介质，其具有改善的电磁转换特性和运行能力并且适合于高密度记录。磁记录介质具有至少两个设置在支撑体一侧的磁性层。所述磁性层中的一层包含纵横比为3至小于8的磁性颗粒，另一层包含纵横比为8至12的磁性颗粒。

2. 发明公开

EP0382156A3 Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：EP0382156A3
公开(公告)日：1991-05-08
申请号：EP90102289.7
申请日：1990-02-06
申请人： KONICA CORPORATION
发明人： Koyama, Noboru , Nakano, Yasushi , Yasufuku, Yoshitaka , Kawahara, Setsuko , Namiki, Takemasa , Kawabe, Shigetoshi , Umemura, Masahiro
IPC分类号： G11B5/716 , G11B5/708
CPC分类号： G11B5/7085 , G11B5/716 , Y10S428/90 , Y10T428/256 , Y10T428/257
摘要： A magnetic recording medium having plural magnetic layers is disclosed. The uppermost magnetic layer contains an abrasive with an average particle diameter of not more than 0.3 µm, and a magnetic layer other than the uppermost magnetic layer contains an abrasive with an average particle diameter of not less than 0.3 µm. The medium is improved in the electromagnetic conversion characteristics and sliding noise.
摘要翻译：公开了具有多个磁性层的磁记录介质。最上面的磁性层含有平均粒径不大于0.3μm的磨料，除最上面的磁性层以外的磁性层含有平均粒径不小于0.3μm的磨料。介质的电磁转换特性和滑动噪声得到改善。

3. 发明公开

EP0389994A2 A magnetic recording medium 失效
标题翻译： Ein magnetischerAufzeichnungsträger。
公开(公告)号：EP0389994A2
公开(公告)日：1990-10-03
申请号：EP90105605.1
申请日：1990-03-24
申请人： KONICA CORPORATION
发明人： Kawahara, Setsuko , Nakano, Yasushi , Koyama, Noboru , Umemura, Masahiro
IPC分类号： G11B5/714 , G11B5/716 , G11B5/702
CPC分类号： G11B5/702 , G11B5/714 , G11B5/716 , Y10S428/90 , Y10T428/25 , Y10T428/257 , Y10T428/31609
摘要： A magnetic recording medium which has improved electromagnetic conversion characteristics and running ability and is suitable for high-density recording. The magnetic recording medium has at least two magnetic layers which are provided on one side of a support. One of said magnetic layers contains magnetic particles having an aspect ratio of from 3 to less than 8 and the other one contains magnetic particles having an aspect ratio of from 8 to 12.
摘要翻译：一种具有改善的电磁转换特性和运行能力并适用于高密度记录的磁记录介质。磁记录介质具有设置在支撑体的一侧上的至少两个磁性层。所述磁性层之一包含长宽比为3至小于8的磁性颗粒，另一个磁性颗粒包含纵横比为8至12的磁性颗粒。

4. 发明授权

EP0389994B1 A magnetic recording medium 失效
标题翻译：一种磁性记录介质。
公开(公告)号：EP0389994B1
公开(公告)日：1993-12-29
申请号：EP90105605.1
申请日：1990-03-24
申请人： KONICA CORPORATION
发明人： Kawahara, Setsuko , Nakano, Yasushi , Koyama, Noboru , Umemura, Masahiro
IPC分类号： G11B5/714 , G11B5/716 , G11B5/702
CPC分类号： G11B5/702 , G11B5/714 , G11B5/716 , Y10S428/90 , Y10T428/25 , Y10T428/257 , Y10T428/31609

5. 发明公开

EP0388818A3 Coating apparatus 失效
标题翻译：涂层设备
公开(公告)号：EP0388818A3
公开(公告)日：1991-09-11
申请号：EP90105036.9
申请日：1990-03-16
申请人： KONICA CORPORATION
发明人： Umemura, Masahiro , Kawahara, Setsuko , Namiki, Takemasa , Tobisawa, Seiichi , Kawabe, Shigetoshi , Nakajima, Takeshi , Nakano, Yasushi , Koyama, Noboru
IPC分类号： B05C5/02
CPC分类号： B05C9/06 , B05C5/0254 , G03C1/74 , G03C2001/7407 , G03C2001/7459 , G03C2001/7466 , G11B5/716 , G11B5/848
摘要： Disclosed is a coating apparatus which comprises the first slot (5) arranged between the front (1) and center (2) edges and the second slot (7) arranged between the center (2) and back (3) edges, wherein a coating solution is extruded continuously from each of the slots so as to be coated on the surface of a flexible support (B) running continuously along the edge surfaces of the front, center and back edges in order. The front edge surface has a straight-line portion (L) provided to at least the terminal end portion of the front edge so that said straight-line portion may be along the direction of running said support and not longer than one mm in length, and at least one portion of said center and back edge surfaces is extruded from the extension line of said straight-line on the support side. The coating apparatus is suitable for preparing a magnetic recording medium.
摘要翻译：公开了一种涂布设备，其包括布置在前部（1）和中部（2）边缘之间的第一槽（5）和布置在中心（2）和后部（3）边缘之间的第二槽（7），其中涂层溶液从每个槽连续地挤出，以便被涂覆在依次沿前，中和后边缘的边缘表面延伸的柔性支撑件（B）的表面上。前端面具有至少设置在前缘的终端部分的直线部分（L），使得所述直线部分沿着所述支撑件的行进方向并且长度不超过1mm，并且所述中心和后边缘表面的至少一部分从支撑侧上的所述直线的延长线突出。该涂布装置适合于制备磁记录介质。

6. 发明公开

EP0337450A3 Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：EP0337450A3
公开(公告)日：1991-04-10
申请号：EP89106584.9
申请日：1989-04-13
申请人： KONICA CORPORATION
发明人： Isobe, Ryosuke , Koyama, Noboru , Itozawa, Kenji , Mori, Takahiro
IPC分类号： G11B5/702
CPC分类号： G11B5/702
摘要： A magnetic recording medium having a support and provided thereon, a magnetic layer containing a ferromagnetic metal powder and a binder is disclosed. The ferromagnetic powder comprises an adsorbed moisture of not less than 1.0 weight % and not more than 2.5 weight % of said ferromagnetic metal powder, a pH value of not less than 9.0 and not morer than 11.5, and a specific surface area of not less than 45 m²/g measured by a BET method; and the binder comprises at least one polar group selected from the group consisting of:
wherein M represents an atom selected from the group consisting of hydrogen, lithium, sodium, and potassium; and M¹ and M² represent atoms of hydrogen, lithium, sodium and potassium, and an alkyl group, provided that M¹ and M² may be same with or different from each other.
摘要翻译：公开了一种磁记录介质，其具有载体并在其上设置有包含强磁性金属粉末和粘合剂的磁性层。所述铁磁性粉末的吸附水分为所述强磁性金属粉末的1.0重量％以上2.5重量％以下，pH值为9.0以上且11.5以下，且比表面积不小于通过BET法测得的45m 2 / g; 并且粘结剂包含至少一种选自下列的极性基团：其中M表示选自氢，锂，钠和钾的原子; M 1和M 2代表氢，锂，钠和钾的原子和烷基，条件是M 1和M 2可以彼此相同或不同。

7. 发明公开

EP0373856A2 A magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：EP0373856A2
公开(公告)日：1990-06-20
申请号：EP89312904.9
申请日：1989-12-11
申请人： KONICA CORPORATION
发明人： Koyama, Noboru , Nakano, Yasushi , Kawahara, Setsuko , Nakajima, Noboru
IPC分类号： G11B5/716 , G11B5/708 , G11B5/714
CPC分类号： G11B5/716 , G11B5/708 , G11B5/714 , Y10S428/90 , Y10T428/25 , Y10T428/265 , Y10T428/30
摘要： There is disclosed a magnetic recording medium comprising a support and provided thereon a plurality of layers. The layers comprise an outermost magnetic layer and a lower magnetic layer, wherein the outermost magnetic layer contains carbon black having an average primary particle size ranging from 40 mµ to 300 mµ , and the lower magnetic layer contains carbon black having an average primary particle size ranging from 5 mµ to 30 mµ .
摘要翻译：公开了一种磁记录介质，其包括支撑体并且在其上提供多个层。这些层包括最外磁性层和下磁性层，其中最外磁性层包含平均一次粒径为40mμ-300mμ的炭黑，下磁层含有平均一次粒径范围在一定范围内的炭黑从5mμ到30mμ。

8. 发明授权

EP0388818B1 Coating apparatus 失效
公开(公告)号：EP0388818B1
公开(公告)日：1994-11-30
申请号：EP90105036.9
申请日：1990-03-16
申请人： KONICA CORPORATION
发明人： Umemura, Masahiro , Kawahara, Setsuko , Namiki, Takemasa , Tobisawa, Seiichi , Kawabe, Shigetoshi , Nakajima, Takeshi , Nakano, Yasushi , Koyama, Noboru
IPC分类号： B05C5/02
CPC分类号： B05C9/06 , B05C5/0254 , G03C1/74 , G03C2001/7407 , G03C2001/7459 , G03C2001/7466 , G11B5/716 , G11B5/848

9. 发明授权

EP0382156B1 Magnetic recording medium 失效
公开(公告)号：EP0382156B1
公开(公告)日：1993-12-29
申请号：EP90102289.7
申请日：1990-02-06
申请人： KONICA CORPORATION
发明人： Koyama, Noboru , Nakano, Yasushi , Yasufuku, Yoshitaka , Kawahara, Setsuko , Namiki, Takemasa , Kawabe, Shigetoshi , Umemura, Masahiro
IPC分类号： G11B5/716 , G11B5/708
CPC分类号： G11B5/7085 , G11B5/716 , Y10S428/90 , Y10T428/256 , Y10T428/257

10. 发明公开

EP0382156A2 Magnetic recording medium 失效
标题翻译： MagnetischerAufzeichnungsträger。
公开(公告)号：EP0382156A2
公开(公告)日：1990-08-16
申请号：EP90102289.7
申请日：1990-02-06
申请人： KONICA CORPORATION
发明人： Koyama, Noboru , Nakano, Yasushi , Yasufuku, Yoshitaka , Kawahara, Setsuko , Namiki, Takemasa , Kawabe, Shigetoshi , Umemura, Masahiro
IPC分类号： G11B5/716 , G11B5/708
CPC分类号： G11B5/7085 , G11B5/716 , Y10S428/90 , Y10T428/256 , Y10T428/257
摘要： A magnetic recording medium having plural magnetic layers is disclosed. The uppermost magnetic layer contains an abrasive with an average particle diameter of not more than 0.3 µm, and a magnetic layer other than the uppermost magnetic layer contains an abrasive with an average particle diameter of not less than 0.3 µm. The medium is improved in the electromagnetic conversion characteristics and sliding noise.
摘要翻译：公开了一种具有多个磁性层的磁记录介质。最上层的磁性层含有平均粒径为0.3μm以下的研磨剂，最上层的磁性层以外的磁性层含有平均粒径为0.3μm以上的研磨剂。该介质的电磁转换特性和滑动噪声得到改善。

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