会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 2. 发明授权
    • Hard disk drive utilizing second lubricant over a first lubricant having a phosophezine group
    • 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
    • US06816341B2
    • 2004-11-09
    • US10347912
    • 2003-01-22
    • Hiroyuki MatsumotoHiroshi TaniMitsuhiro ShodaKoji SonodaTakayuki NakakawajiMina AmoYutaka Ito
    • Hiroyuki MatsumotoHiroshi TaniMitsuhiro ShodaKoji SonodaTakayuki NakakawajiMina AmoYutaka Ito
    • G11B582
    • G11B33/148C10M105/74C10M107/38C10M107/48G11B5/012G11B33/1446Y10T428/24355Y10T428/24992Y10T428/265
    • 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).
    • 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)。
    • 4. 发明授权
    • Lubricant, magnetic disk and magnetic disk apparatus
    • 润滑剂,磁盘和磁盘装置
    • US06555197B1
    • 2003-04-29
    • US09561216
    • 2000-04-28
    • Mina IshidaTakayuki NakakawajiYutaka ItoHiroyuki MatsumotoHiroshi TaniHeigo Ishihara
    • Mina IshidaTakayuki NakakawajiYutaka ItoHiroyuki MatsumotoHiroshi TaniHeigo Ishihara
    • G11B5725
    • G11B5/725G11B5/71G11B33/148Y10T428/3154
    • 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.
    • 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。
    • 6. 发明授权
    • Magnetic disk drive
    • 磁盘驱动器
    • US06917495B2
    • 2005-07-12
    • US10689599
    • 2003-10-22
    • Takayuki NakakawajiMina IshidaYutaka ItoHiroyuki MatsumotoHiroshi Tani
    • Takayuki NakakawajiMina IshidaYutaka ItoHiroyuki MatsumotoHiroshi Tani
    • C10M105/74C10M107/38C10M107/48G11B5/012G11B33/14G11B5/60
    • C10M105/74C10M107/38C10M107/48G11B5/012G11B33/1446G11B33/148
    • 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.
    • 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。
    • 7. 发明授权
    • Lubricant, magnetic disk and magnetic disk apparatus
    • 润滑剂,磁盘和磁盘装置
    • US06869536B2
    • 2005-03-22
    • US10386471
    • 2003-03-13
    • Mina IshidaTakayuki NakakawajiYutaka ItoHiroyuki MatsumotoHiroshi TaniHeigo Ishihara
    • Mina IshidaTakayuki NakakawajiYutaka ItoHiroyuki MatsumotoHiroshi TaniHeigo Ishihara
    • G11B5/71G11B5/725G11B33/14B01D61/00
    • G11B5/725G11B5/71G11B33/148Y10T428/3154
    • 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.
    • 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。