公开(公告)号：US07719794B2

公开(公告)日：2010-05-18

申请号：US12359955

申请日：2009-01-26

Applicant: Mitsunobu Hanyu ,  Kan Takahashi

Inventor： Mitsunobu Hanyu ,  Kan Takahashi

IPC: G11B5/60

CPC classification number: G11B5/6005

Abstract: According to an embodiment, a slider of a head comprises a negative-pressure cavity formed in a facing surface, a leading step portion situated on an inflow side of the negative-pressure cavity, a pair of side portions opposed to each other, a trailing step portion situated on an outflow side of the negative-pressure cavity, a leading pad provided on an end portion of the leading step portion on the negative-pressure cavity side, and a plurality of recesses formed on the inflow side of the leading pad and individually opening in the inflow-side end face. The leading step portion includes a main step portion which is situated beside the inflow side of the leading pad and extends in a second direction, and at least one extended step portion extending transversely to the second direction from the main step portion toward the inflow side and situated between the recesses.

Abstract translation: 根据实施例，头部的滑块包括形成在相对表面中的负压腔，位于负压腔的流入侧的前进台阶部分，彼此相对的一对侧部，尾部 位于负压腔的流出侧的台阶部，设置在负压腔侧的前述台阶部的端部的引导焊盘以及形成在引导焊盘的流入侧的多个凹部， 在流入侧端面分别开口。 引导台阶部分包括主梯级部分，其位于引导垫的流入侧旁边并且沿第二方向延伸;以及至少一个延伸台阶部，其从主台阶部朝向流入侧横向于第二方向延伸， 位于凹槽之间。

公开(公告)号：US20090310258A1

公开(公告)日：2009-12-17

申请号：US12359955

申请日：2009-01-26

Applicant: Mitsunobu Hanyu ,  Kan Takahashi

Inventor： Mitsunobu Hanyu ,  Kan Takahashi

IPC: G11B5/60

CPC classification number: G11B5/6005

Abstract: According to an embodiment, a slider of a head comprises a negative-pressure cavity formed in a facing surface, a leading step portion situated on an inflow side of the negative-pressure cavity, a pair of side portions opposed to each other, a trailing step portion situated on an outflow side of the negative-pressure cavity, a leading pad provided on an end portion of the leading step portion on the negative-pressure cavity side, and a plurality of recesses formed on the inflow side of the leading pad and individually opening in the inflow-side end face. The leading step portion includes a main step portion which is situated beside the inflow side of the leading pad and extends in a second direction, and at least one extended step portion extending transversely to the second direction from the main step portion toward the inflow side and situated between the recesses.

Abstract translation: 根据实施例，头部的滑块包括形成在相对表面中的负压腔，位于负压腔的流入侧的前进台阶部分，彼此相对的一对侧部，尾部 位于负压腔的流出侧的台阶部，设置在负压腔侧的前述台阶部的端部的引导焊盘，以及形成在引导焊盘的流入侧的多个凹部， 在流入侧端面分别开口。 引导台阶部分包括主梯级部分，其位于引导垫的流入侧旁边并且沿第二方向延伸;以及至少一个延伸台阶部，其从主台阶部朝向流入侧横向于第二方向延伸， 位于凹槽之间。

公开(公告)号：US08184401B2

公开(公告)日：2012-05-22

申请号：US12548285

申请日：2009-08-26

Applicant: Masami Yamane ,  Kan Takahashi

Inventor： Masami Yamane ,  Kan Takahashi

IPC: G11B5/60

CPC classification number: G11B5/6082 ,  G11B5/6064

Abstract: According to an embodiment, a slider of a head includes a negative-pressure cavity defined by a recess formed in a disk-facing surface, a leading step portion which is situated on an upstream side of the negative-pressure cavity with respect to an airflow and projects from a bottom surface of the negative-pressure cavity, a trailing step portion which is provided on an outflow-side end portion of the facing surface on the downstream side of the negative-pressure cavity with respect to the airflow, projects from the bottom surface of the negative-pressure cavity, and constitutes a part of the facing surface, and a maximum-positive-pressure producing step portion which is spaced upstream from the trailing step portion with respect to the airflow, projects from the bottom surface of the negative-pressure cavity, and produces a maximum positive pressure. A head portion is provided on the trailing step portion.

Abstract translation: 根据实施例，头部的滑块包括由形成在面向盘的表面中的凹部限定的负压腔，相对于气流位于负压腔的上游侧的前进台阶部 并且从负压腔的底面突出设置有相对于气流在负压腔的下游侧的面对面的流出侧端部设置的后台阶部， 并且构成所述面对面的一部分，并且相对于所述气流与所述后台阶部的上游侧隔开的最大正压力产生台阶部从所述负压腔的底面突出， 负压腔，产生最大正压。 头部部分设置在后台阶部分上。

公开(公告)号：US20050094300A1

公开(公告)日：2005-05-05

申请号：US10976341

申请日：2004-10-29

Applicant: Koji Yano ,  Kan Takahashi

Inventor： Koji Yano ,  Kan Takahashi

IPC: G11B5/09 ,  G11B5/00 ,  G11B5/012 ,  G11B5/105 ,  G11B5/48 ,  G11B5/54 ,  G11B5/58 ,  G11B20/10 ,  G11B20/18 ,  G11B27/36

CPC classification number: G11B20/10194 ,  G11B5/012 ,  G11B5/105 ,  G11B5/3136 ,  G11B5/4886 ,  G11B5/54 ,  G11B5/581 ,  G11B20/18 ,  G11B27/36 ,  G11B2005/001 ,  G11B2005/0013 ,  G11B2005/0021 ,  G11B2220/20

Abstract: There is disclosed a disk drive having a write controller which effectively inhibits a PTP phenomenon at a write operation time. The write controller is a CPU which changes write conditions for alleviating the PTP phenomenon on production of a write error at the write operation time. The CPU changes a write current value set to a register of a head amplifier circuit to a low current value, and executes a write operation. The CPU changes the write current value in stages until the write error is inhibited.

Abstract translation: 公开了一种具有写入控制器的磁盘驱动器，其在写入操作时间有效地抑制PTP现象。 写入控制器是在写入操作时间产生写入错误时改变写入条件以缓解PTP现象的CPU。 CPU将写入电流值设置为前置放大器电路的寄存器，使其变为低电流值，并执行写入操作。 CPU会逐级更改写入当前值，直到写入错误被禁止。

公开(公告)号：US20100002340A1

公开(公告)日：2010-01-07

申请号：US12548285

申请日：2009-08-26

Applicant: Masami Yamane ,  Kan Takahashi

Inventor： Masami Yamane ,  Kan Takahashi

IPC: G11B5/60

CPC classification number: G11B5/6082 ,  G11B5/6064

Abstract: According to an embodiment, a slider of a head includes a negative-pressure cavity defined by a recess formed in a disk-facing surface, a leading step portion which is situated on an upstream side of the negative-pressure cavity with respect to an airflow and projects from a bottom surface of the negative-pressure cavity, a trailing step portion which is provided on an outflow-side end portion of the facing surface on the downstream side of the negative-pressure cavity with respect to the airflow, projects from the bottom surface of the negative-pressure cavity, and constitutes a part of the facing surface, and a maximum-positive-pressure producing step portion which is spaced upstream from the trailing step portion with respect to the airflow, projects from the bottom surface of the negative-pressure cavity, and produces a maximum positive pressure. A head portion is provided on the trailing step portion.

Abstract translation: 根据实施例，头部的滑块包括由形成在面向盘的表面中的凹部限定的负压腔，相对于气流位于负压腔的上游侧的前进台阶部 并且从负压腔的底面突出设置有相对于气流在负压腔的下游侧的面对面的流出侧端部设置的后台阶部， 并且构成所述面对面的一部分，并且相对于所述气流与所述后台阶部的上游侧隔开的最大正压力产生台阶部从所述负压腔的底面突出， 负压腔，产生最大正压。 头部部分设置在后台阶部分上。

公开(公告)号：US07463452B2

公开(公告)日：2008-12-09

申请号：US11085015

申请日：2005-03-21

Applicant: Kan Takahashi ,  Mitsunobu Hanyu ,  Kazuhiro Yoshida ,  Jun Ito

Inventor： Kan Takahashi ,  Mitsunobu Hanyu ,  Kazuhiro Yoshida ,  Jun Ito

IPC: G11B5/60

CPC classification number: G11B5/6082

Abstract: A pair of side pads, which are arranged to face each other by having a negative pressure generating part in the direction orthogonal to an air flow direction of a slider therebetween, are made to have three or more steps, respectively. Of the respective surfaces having the plural steps, the surfaces having a highest height respectively are not subject to a milling, and the respective surfaces of having plural steps are made to gradually have a deeper cavity depth as the surface comes closer to the air inflow end. Further, it is also effective for improving the efficiency in positive pressure generation to surround the second side pad region partially by the region of the surface being not subject to the milling, and to surround the third side pad region partially by the second surface region.

Abstract translation: 通过在与它们之间的滑块的空气流动方向正交的方向上具有负压产生部件而相互配置的一对侧垫分别具有三个或更多个步骤。 在具有多个台阶的各个表面中，分别具有最高高度的表面不进行研磨，并且当表面接近空气流入端时，使具有多个台阶的各个表面逐渐具有更深的腔深度 。 此外，通过部分由不经过铣削的表面的区域，以及部分地由第二表面区域包围第三侧垫区域，也能有效地提高正压力产生的效率以包围第二侧焊盘区域。

公开(公告)号：US20060082928A1

公开(公告)日：2006-04-20

申请号：US11251800

申请日：2005-10-18

Applicant: Kan Takahashi ,  Kazuhiro Yoshida ,  Mitsunobu Hanyu

Inventor： Kan Takahashi ,  Kazuhiro Yoshida ,  Mitsunobu Hanyu

IPC: G11B5/60

CPC classification number: G11B5/6005 ,  G11B5/6082

Abstract: A slider of a head has a negative-pressure cavity formed in a facing surface, a leading step portion and a leading pad which protrude from the facing surface and are situated on the upstream side of the negative-pressure cavity with respect to an airflow, and a trailing step portion and a trailing pad which protrude from the facing surface and are situated on the downstream side of the negative-pressure cavity with respect to the airflow. The surface area of the trailing pad accounts for 1.5% or more of the area of the disk facing surface of the slider, and at least the surface of the trailing pad is microtexured. The surface roughness of a recording medium that faces the slider is 0.8 nm or less in terms of Ra, and the head suspension applies a head load of 1 gf or more to the head.

Abstract translation: 头部的滑块具有形成在相对表面中的负压腔，引导台阶部分和引导垫，其从相对表面突出并相对于气流位于负压腔的上游侧， 以及从相对表面突出并相对于气流位于负压腔的下游侧的后缘部分和后垫。 拖曳垫的表面积占滑块面对盘面的面积的1.5％以上，至少后垫的表面是微纹理的。 面向滑块的记录介质的表面粗糙度以Ra计为0.8nm以下，磁头悬架对磁头施加1gf以上的磁头负载。

公开(公告)号：US20050231851A1

公开(公告)日：2005-10-20

申请号：US11085051

申请日：2005-03-22

Applicant: Kazuhiro Yoshida ,  Jun Ito ,  Kan Takahashi ,  Mitsunobu Hanyu

Inventor： Kazuhiro Yoshida ,  Jun Ito ,  Kan Takahashi ,  Mitsunobu Hanyu

IPC: C23F1/04 ,  G11B5/187 ,  G11B5/60 ,  G11B21/21

CPC classification number: G11B5/1871 ,  G11B5/6082 ,  Y10T29/49021 ,  Y10T29/49046 ,  Y10T29/49048

Abstract: A manufacturing method of a magnetic head slider 5 is to perform milling processes for at least three times to a slider main body 50 to form a flying surface, and thereby, the milling process is performed at variety of depths more than the number of milling processes. These three times milling process composed of: for example, a first milling processes forming a first mask on the slider main body 50 and performing a milling at a first depth; a second milling process changing the first mask to a second mask and performing the milling at a second depth, after the first milling process; and a third milling process changing the second mask to a third mask and performing the milling at a third depth, after the second milling process. Namely, a cycle of the masking, the milling, and a removal of the mask is performed three cycles, and thereby, milling surfaces with at least four varieties of heights or more can be formed easily.

Abstract translation: 磁头滑块5的制造方法是对滑块主体50进行至少三次的铣削加工，以形成飞行面，从而在多个深度上进行比铣削加工次数多的铣削加工 。 这三次铣削工艺由以下部件组成：例如，在滑块主体50上形成第一掩模的第一铣削加工，并在第一深度进行铣削; 在第一研磨过程之后，将第一掩模改变为第二掩模并在第二深度进行研磨的第二研磨工艺; 以及在第二研磨过程之后，将第二掩模改变为第三掩模并在第三深度进行研磨的第三研磨工艺。 即，进行掩模，研磨和去除掩模的循环三个循环，从而可以容易地形成具有至少四种高度或更高的铣削表面。

公开(公告)号：US07423843B2

公开(公告)日：2008-09-09

申请号：US10934146

申请日：2004-09-02

Applicant: Kan Takahashi

Inventor： Kan Takahashi

IPC: G11B5/60 ,  G11B17/32

CPC classification number: G11B5/6082

Abstract: A magnetic head structure is formed on an air-bearing surface thereof including first, second and third surfaces located in order in a height direction from a level closest to the magnetic recording medium so as to form negative and positive pressure-generating regions. The structure includes a first positive pressure-generating region having the second and first surfaces formed at a central portion along a longitudinal direction thereof, a first negative pressure-generating region having the third surface formed on a side of an air inlet edge with respect to the first positive pressure-generating region and a second negative pressure-generating region having the third surface formed on a side of an air outlet edge with respect to the first positive pressure-generating region.

Abstract translation: 在其空气轴承表面上形成磁头结构，其包括从最接近磁记录介质的高度方向依次排列的第一表面，第二表面和第三表面，从而形成负的和正的产生压力的区域。 该结构包括第一正压力产生区域，其具有形成在沿着其纵向方向的中心部分处的第二表面和第一表面;第一负压产生区域，具有形成在空气入口边缘相对于 第一正压力产生区域和第二负压产生区域，其具有相对于第一正压力产生区域在空气出口边缘的一侧上形成的第三表面。

公开(公告)号：US20080013213A1

公开(公告)日：2008-01-17

申请号：US11819048

申请日：2007-06-25

Applicant: Kan Takahashi

Inventor： Kan Takahashi

IPC: G11B5/60 ,  G11B15/64 ,  G11B17/32

CPC classification number: G11B5/6082

Abstract: According to one embodiment, a slider of a head has a negative-pressure cavity which is formed in a facing surface, a leading step portion, a trailing step portion, a pair of side step portions which protrude from the facing surface and extend in the longitudinal direction, and a pair of skirt portions. Each of the skirt portions has a proximal end portion and an extended end portion, which is situated on the downstream end side of the slider and nearer to the trailing step portion with respect to the proximal end portion and faces the trailing step portion with a gap therebetween. The skirt portion is disposed in a region E which contains a line connecting the proximal end portion and the extended end portion and an area situated on the opposite side of the line with respect to the trailing step portion.

Abstract translation: 根据一个实施例，头部的滑块具有形成在相对表面中的负压腔，引导台阶部分，后台阶部分，从相对表面突出并在其中延伸的一对侧台阶部分 纵向方向和一对裙部。 每个裙部具有基端部和延伸端部，该端部部分和延伸端部分位于滑块的下游端侧，并且相对于近端部分更靠近后台阶部分并且具有间隙 之间。 裙部设置在包含连接基端部和延伸端部的线的区域E和位于相对于后台阶部的线的相对侧的区域。