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    Lubricant, magnetic disk and magnetic disk apparatus
    1.
    发明授权
    Lubricant, magnetic disk and magnetic disk apparatus 失效
    润滑剂，磁盘和磁盘装置

    公开(公告)号：US06555197B1

    公开(公告)日：2003-04-29

    申请号：US09561216

    申请日：2000-04-28

    申请人： Mina Ishida ,  Takayuki Nakakawaji ,  Yutaka Ito ,  Hiroyuki Matsumoto ,  Hiroshi Tani ,  Heigo Ishihara

    发明人： Mina Ishida ,  Takayuki Nakakawaji ,  Yutaka Ito ,  Hiroyuki Matsumoto ,  Hiroshi Tani ,  Heigo Ishihara

    IPC分类号： G11B5725

    CPC分类号： G11B5/725 ,  G11B5/71 ,  G11B33/148 ,  Y10T428/3154

    摘要： A lubricant which does not splash easily and has an improved property of slidableness, and a magnetic disk using the lubricant are provided. A magnetic disk apparatus featuring a prolonged service life of a stable operation and an excellent record reproduction property is provided by installing the above magnetic disk. The lubricant of the invention contains perfluoropolyether expressed by the following general formula, in which a component of its molecular weights less than 1000 is smaller than 10 wt. %, a component of its molecular weights not less than 7000 is smaller than 15 wt. %, a ratio between a weight average molecular weight and a numeric average molecular weight is 1.5 or less, and a substitution ratio of its terminal functional group is not less than 90%: R1—CF2O—[—(CF2CF2O )—m—(CF2O)—n—]—CF2—R2  (1), where R1 and R2 are univalent organic groups, m and n are positive integers. Further for the magnetic disk which rotates at a speed of 10000 rpm or more, a lubricant containing a perfluoropolyether expressed by the following general formula is used, in which its numeric average molecular weight is not less than 5500, a component of molecular weights less than 3000 is 15 wt. % or less, a ratio between its weight average molecular weight and its numeric average molecular weight is 1.5 or less, and a substitution ratio of its terminal functional group is not less than 90%: HOCH2—CF2O—[—CF2CF2O]—m—[CF2O]—n—CF2—CH2OH  (2), where m and n are positive integers.

    摘要翻译： 提供不容易飞溅并且具有改善的滑动性的润滑剂和使用润滑剂的磁盘。 通过安装上述磁盘来提供具有延长的稳定操作的使用寿命和良好的记录再现性能的磁盘装置。 本发明的润滑剂包含由以下通式表示的全氟聚醚，其中分子量小于1000的组分小于10重量％。 ％，其分子量不小于7000的组分小于15重量％。 ％，重均分子量与数均分子量之比为1.5以下，其末端官能团的取代率为90％以上：其中，R1和R2为单价有机基团，m和n为 正整数。 此外，对于以10000rpm以上的速度旋转的磁盘，使用含有由以下通式表示的全氟聚醚的润滑剂，其数均分子量不小于5500，分子量小于 3000是15wt。 ％以下，其重均分子量与数均分子量之比为1.5以下，其末端官能团的取代率为90％以上：m和n为正整数。

    Lubricant, magnetic disk and magnetic disk apparatus
    2.
    发明授权
    Lubricant, magnetic disk and magnetic disk apparatus 失效
    润滑剂，磁盘和磁盘装置

    公开(公告)号：US06869536B2

    公开(公告)日：2005-03-22

    申请号：US10386471

    申请日：2003-03-13

    申请人： Mina Ishida ,  Takayuki Nakakawaji ,  Yutaka Ito ,  Hiroyuki Matsumoto ,  Hiroshi Tani ,  Heigo Ishihara

    发明人： Mina Ishida ,  Takayuki Nakakawaji ,  Yutaka Ito ,  Hiroyuki Matsumoto ,  Hiroshi Tani ,  Heigo Ishihara

    IPC分类号： G11B5/71 ,  G11B5/725 ,  G11B33/14 ,  B01D61/00

    CPC分类号： G11B5/725 ,  G11B5/71 ,  G11B33/148 ,  Y10T428/3154

    摘要： A lubricant which does not splash easily and has an improved property of slidableness, and a magnetic disk using the lubricant are provided. A magnetic disk apparatus featuring a prolonged service life of a stable operation and an excellent record reproduction property is provided by installing the above magnetic disk. The lubricant of the invention contains perfluoropolyether expressed by the following general formula, in which a component of its molecular weights less than 1000 is smaller than 10 wt. %, a component of its molecular weights not less than 7000 is smaller than 15 wt. %, a ratio between a weight average molecular weight and a numeric average molecular weight is 1.5 or less, and a substitution ratio of its terminal functional group is not less than 90%: R1—CF2O—[—(CF2CF2O)—m—(CF2O)—n—]—CF2—R2  (1), where R1 and R2 are univalent organic groups, m and n are positive integers. Further for the magnetic disk which rotates at a speed of 10000 rpm or more, a lubricant containing a perfluoropolyether expressed by the following general formula is used, in which its numeric average molecular weight is not less than 5500, a component of molecular weights less than 3000 is 15 wt. % or less, a ratio between its weight average molecular weight and its numeric average molecular weight is 1.5 or less, and a substitution ratio of its terminal functional group is not less than 90%: HOCH2—CF2O—[—CF2CF2O]—m—[CF2O]—n—CF2—CH2OH  (2), where m and n are positive integers.

    摘要翻译： 提供不容易飞溅并且具有改善的滑动性的润滑剂和使用润滑剂的磁盘。 通过安装上述磁盘来提供具有延长的稳定操作的使用寿命和良好的记录再现性能的磁盘装置。 本发明的润滑剂包含由以下通式表示的全氟聚醚，其中分子量小于1000的组分小于10重量％。 ％，其分子量不小于7000的组分小于15重量％。 ％，重均分子量与数均分子量之比为1.5以下，其末端官能团的取代率为90％以上：其中，R1和R2为单价有机基团，m和n为 正整数。 此外，对于以10000rpm以上的速度旋转的磁盘，使用含有由以下通式表示的全氟聚醚的润滑剂，其数均分子量不小于5500，分子量小于 3000是15wt。 ％以下，其重均分子量与数均分子量之比为1.5以下，其末端官能团的取代率为90％以上：m和n为正整数。

    Magnetic disk drive with supply of perfluoropolyether as lubricant
    3.
    发明授权
    Magnetic disk drive with supply of perfluoropolyether as lubricant 有权
    供应全氟聚醚作为润滑剂的磁盘驱动器

    公开(公告)号：US06665147B2

    公开(公告)日：2003-12-16

    申请号：US09897401

    申请日：2001-07-03

    申请人： Takayuki Nakakawaji ,  Mina Ishida ,  Yutaka Ito ,  Hiroyuki Matsumoto ,  Hiroshi Tani

    发明人： Takayuki Nakakawaji ,  Mina Ishida ,  Yutaka Ito ,  Hiroyuki Matsumoto ,  Hiroshi Tani

    IPC分类号： G11B560

    CPC分类号： C10M105/74 ,  C10M107/38 ,  C10M107/48 ,  G11B5/012 ,  G11B33/1446 ,  G11B33/148

    摘要： A magnetic disk drive having a small decrease in lubricant film thickness on the surface of the magnetic disk and a superior sliding reliability between the magnetic head and the magnetic disk surface. Perfluoropolyether is supplied as the lubricant onto the surface of the magnetic disk using heat and air flow by applying perfluoropolyether onto the surface of a suspension, or impregnating perfluoropolyether into a filter. The lubricant contains perfluoropolyether having a molecular weight sufficient to enable lubrication and smaller than 4000 by at least 40%.

    摘要翻译： 一种磁盘驱动器，其在磁盘表面上的润滑剂膜厚度的减小和磁头和磁盘表面之间具有优异的滑动可靠性。 使用全氟聚醚将全氟聚醚施加到悬浮液的表面上，或者将全氟聚醚浸入过滤器中，使用热和空气流将全氟聚醚作为润滑剂供应到磁盘的表面上。 润滑剂含有足够分子量的全氟聚醚以实现润滑，并且小于4000至少40％。

    Magnetic disk drive
    4.
    发明授权
    Magnetic disk drive 失效
    磁盘驱动器

    公开(公告)号：US06917495B2

    公开(公告)日：2005-07-12

    申请号：US10689599

    申请日：2003-10-22

    申请人： Takayuki Nakakawaji ,  Mina Ishida ,  Yutaka Ito ,  Hiroyuki Matsumoto ,  Hiroshi Tani

    发明人： Takayuki Nakakawaji ,  Mina Ishida ,  Yutaka Ito ,  Hiroyuki Matsumoto ,  Hiroshi Tani

    IPC分类号： C10M105/74 ,  C10M107/38 ,  C10M107/48 ,  G11B5/012 ,  G11B33/14 ,  G11B5/60

    CPC分类号： C10M105/74 ,  C10M107/38 ,  C10M107/48 ,  G11B5/012 ,  G11B33/1446 ,  G11B33/148

    摘要： A magnetic disk drive having a magnetic disk, a spindle motor for rotating the magnetic disk, a magnetic head slider for recording or reproducing data onto or from the magnetic disk and a housing. A control circuit system is provided for controlling the head slider so that the head slider is positioned on the magnetic disk plane when the magnetic disk is rotating, and the head slider is saved to outside the magnetic disk plane when rotation of the magnetic disk is stopped. A lubricant supplier is provided for supplying lubricant to the surface of the magnetic disk. The lubricant supplier contains at least a perfluoropolyether compound having any one of an alcohol group, a cyclic ether group, and an alkyl-ester group at its terminal position as a lubricant, and the lubricant contains the perfluoropolyether compound having a molecular weight sufficient to enable lubrication and no greater than 4000.

    摘要翻译： 具有磁盘的磁盘驱动器，用于旋转磁盘的主轴电动机，用于在磁盘上或从磁盘上记录数据或从磁盘重放数据的磁头滑块。 提供一种控制电路系统，用于控制磁头滑动器，使得当磁盘旋转时磁头滑块位于磁盘平面上，并且当磁盘停止旋转时磁头滑块被保存在磁盘平面外部 。 提供润滑剂供应者用于向磁盘的表面供给润滑剂。 润滑剂供应商在其末端含有至少一种具有醇基，环状醚基和烷基酯基中任何一种的全氟聚醚化合物作为润滑剂，并且润滑剂含有足够分子量的全氟聚醚化合物， 润滑不超过4000。

    Magnetic disk, and magnetic disk apparatus
    5.
    发明授权
    Magnetic disk, and magnetic disk apparatus 失效
    磁盘和磁盘装置

    公开(公告)号：US5820964A

    公开(公告)日：1998-10-13

    申请号：US554809

    申请日：1995-11-07

    申请人： Takayuki Nakakawaji ,  Shuji Imazeki ,  Yutaka Ito ,  Yuko Morita ,  Mitsuyoshi Shouji ,  Hisashi Morooka ,  Heigo Ishihara ,  Hiroyuki Matsumoto ,  Tetsuya Hamaguchi ,  Hiroshi Sasaki ,  Tomoyuki Hamada

    发明人： Takayuki Nakakawaji ,  Shuji Imazeki ,  Yutaka Ito ,  Yuko Morita ,  Mitsuyoshi Shouji ,  Hisashi Morooka ,  Heigo Ishihara ,  Hiroyuki Matsumoto ,  Tetsuya Hamaguchi ,  Hiroshi Sasaki ,  Tomoyuki Hamada

    IPC分类号： G11B5/725 ,  G11B5/71

    CPC分类号： G11B5/725 ,  Y10S428/90 ,  Y10T428/31544 ,  Y10T428/31663

    摘要： The present invention is aimed at providing a magnetic disk and a magnetic disk apparatus both of which have a high performance lubricating film which makes continuous sliding endurance and low adhesiveness compatible, and a lubricating film having a self repairing function which makes it possible to recombine scratched off lubricating agent from the magnetic disk surface by sliding with a head onto the magnetic disk surface. The lubricating film comprises at least two kinds of lubricating agents each of which forms an individual layer, the layers being laminated. An adhesion enhancing layer is formed between a magnetic film and a lubricating agent at the surface of the magnetic disk, and the adhesion enhancing layer is fixed onto the magnetic film surface. Then, the adhesion enhancing layer and the lubricating agent are combined. The adhesion enhancing layer and the lubricating agent form a salt or complex body, and the lubricating agent can repeat adsorption and desorption with the adhesion enhancing layer reversely by a thermal reaction.

    摘要翻译： 本发明的目的在于提供一种磁盘和磁盘装置，它们都具有能够连续滑动耐久性和低粘合性相容的高性能润滑膜，以及具有自修复功能的润滑膜，使得可以重新划伤划痕 通过将磁头滑动到磁盘表面上，从磁盘表面脱出润滑剂。 润滑膜包括至少两种形成各自层的润滑剂，这些层被层压。 在磁盘表面的磁性膜和润滑剂之间形成粘合增强层，并且将粘合增强层固定在磁性膜表面上。 然后，粘合增强层和润滑剂组合。 粘合增强层和润滑剂形成盐或复合体，并且润滑剂可以通过热反应与粘合增强层重复吸附和解吸。

    Hard disk drive utilizing second lubricant over a first lubricant having a phosophezine group
    8.
    发明授权
    Hard disk drive utilizing second lubricant over a first lubricant having a phosophezine group 失效
    在具有磷光泽组的第一润滑剂上使用第二润滑剂的硬盘驱动器

    公开(公告)号：US06816341B2

    公开(公告)日：2004-11-09

    申请号：US10347912

    申请日：2003-01-22

    申请人： Hiroyuki Matsumoto ,  Hiroshi Tani ,  Mitsuhiro Shoda ,  Koji Sonoda ,  Takayuki Nakakawaji ,  Mina Amo ,  Yutaka Ito

    发明人： Hiroyuki Matsumoto ,  Hiroshi Tani ,  Mitsuhiro Shoda ,  Koji Sonoda ,  Takayuki Nakakawaji ,  Mina Amo ,  Yutaka Ito

    IPC分类号： G11B582

    CPC分类号： G11B33/148 ,  C10M105/74 ,  C10M107/38 ,  C10M107/48 ,  G11B5/012 ,  G11B33/1446 ,  Y10T428/24355 ,  Y10T428/24992 ,  Y10T428/265

    摘要： A recording element or a reproducing element in a head generates heat that decomposes lubricating agent adhered to a slider surface near the recording/reproducing element of the head. This decomposed lubricating agent leads to corrosion of the magnetic layer and the like of the magnetic disk. The lubricating agent undergoes volume expansion due to this corrosion, creating a protrusion on the magnetic disk surface to which the lubricating agent is adhered. The magnetic disk surface to which the lubricating agent is adhered comes into contact with the magnetic head, leading to friction with the protective layer, the magnetic layer, and the like. In the worst case, this can lead to secondary errors where data recorded on the magnetic layer is erased. To prevent such secondary errors, the present invention provides a hard disk drive including: a magnetic disk to which is applied a first lubricating agent formed as (where p=0 or an integer of at least 1, q=0 or an integer of at least 1, and X=1-5); and a mechanism for supplying a second lubricating agent to the magnetic disk having an average molecular weight of no more than 2,400 and no less than 600 and formed as HOCH2CF2(OC2F4)p(OCF2)qOCF2CH2OH (where p=0 or an integer of at least 1 and q=0 or an integer of at least 1).

    摘要翻译： 头部中的记录元件或再现元件产生热量，其分解粘附到头部的记录/再现元件附近的滑块表面的润滑剂。 这种分解润滑剂导致磁盘的磁性层等的腐蚀。 润滑剂由于这种腐蚀而经历体积膨胀，在粘附有润滑剂的磁盘表面上产生突起。 粘附有润滑剂的磁盘表面与磁头接触，导致与保护层，磁性层等的摩擦。 在最坏的情况下，这可能导致二级错误，其中记录在磁性层上的数据被擦除。 为了防止这种二次错误，本发明提供一种硬盘驱动器，其包括：磁盘，其上施加有第一润滑剂，其形成为（其中p = 0或至少为1的整数，q = 0或整数at 至少1，X = 1-5）; 以及将第二润滑剂供给到平均分子量不大于2400且不小于600的磁盘的机构，其形成为（其中p = 0或至少为1的整数，q = 0或整数为 至少1）。