专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明公开

EP1959436A3 Magnetic head and method of manufacturing the same 审中-公开
标题翻译：磁头和其制造方法
公开(公告)号：EP1959436A3
公开(公告)日：2009-05-27
申请号：EP08250294.9
申请日：2008-01-23
申请人： Hitachi Global Storage Technologies Netherlands B.V.
发明人： Maruyama, Yoji , Iwakura, Tadayuki , Etoh, Kimitoshi , Shiina, Hiromi , Kudo, Kazue
IPC分类号： G11B5/31 , G11B5/127 , G11B5/11
CPC分类号： G11B5/1278 , G11B5/112 , G11B5/3116 , G11B5/3146 , G11B5/315 , G11B5/3163
摘要： To suppress broadening of a write field of a main pole of a perpendicular recording head and realize high-quality write operation, it is necessary to set the formation accuracy of members forming the head at an extremely high level. In the case of manufacturing perpendicular recording heads by commercially available manufacturing equipment, a manufacturing yield is low so that inexpensive heads cannot be mass-produced. A main pole 11 of a write head 200 extends to an air bearing surface 98 or a medium-facing surface and has an inverted trapezoid in cross-section. First soft magnetic films 10 called side shields are separately disposed through a nonmagnetic film 51 on both sides of the main pole 11. The air bearing surface side end of the first soft magnetic film 10 is provided to recede from the air bearing surface 98. The first soft magnetic film 10 and the main pole 11 are formed in the same layer. A second soft magnetic film 12 called a trailing shield is provided above the main pole 11 on the air bearing surface side via a nonmagnetic film 14.

2. 发明公开

EP1959436A2 Magnetic head and method of manufacturing the same 审中-公开
标题翻译： Magnetischer Kopf und Herstellungsverfahrendafür
公开(公告)号：EP1959436A2
公开(公告)日：2008-08-20
申请号：EP08250294.9
申请日：2008-01-23
申请人： Hitachi Global Storage Technologies Netherlands B.V.
发明人： Maruyama, Yoji , Iwakura, Tadayuki , Etoh, Kimitoshi , Shiina, Hiromi , Kudo, Kazue
IPC分类号： G11B5/31 , G11B5/127 , G11B5/11
CPC分类号： G11B5/1278 , G11B5/112 , G11B5/3116 , G11B5/3146 , G11B5/315 , G11B5/3163
摘要： To suppress broadening of a write field of a main pole of a perpendicular recording head and realize high-quality write operation, it is necessary to set the formation accuracy of members forming the head at an extremely high level. In the case of manufacturing perpendicular recording heads by commercially available manufacturing equipment, a manufacturing yield is low so that inexpensive heads cannot be mass-produced. A main pole 11 of a write head 200 extends to an air bearing surface 98 or a medium-facing surface and has an inverted trapezoid in cross-section. First soft magnetic films 10 called side shields are separately disposed through a nonmagnetic film 51 on both sides of the main pole 11. The air bearing surface side end of the first soft magnetic film 10 is provided to recede from the air bearing surface 98. The first soft magnetic film 10 and the main pole 11 are formed in the same layer. A second soft magnetic film 12 called a trailing shield is provided above the main pole 11 on the air bearing surface side via a nonmagnetic film 14.
摘要翻译：为了抑制垂直记录头的主极的写入场的加宽并且实现高质量的写入操作，需要将形成头部的部件的成形精度设定在非常高的水平。在通过商业制造设备制造垂直记录头的情况下，制造成品率低，因此不能批量生产便宜的头。写头200的主极11延伸到空气轴承表面98或中等的表面，并且具有横截面的倒梯形。第一软磁膜10称为侧屏，分别通过主磁极11两侧的非磁性膜51设置。第一软磁膜10的空气轴承表面侧端部设置成从空气轴承表面98后退。第一软磁膜10和主极11形成在同一层中。通过非磁性膜14，在空气轴承表面侧的主极11的上方设置称为后挡板的第二软磁膜12。

3. 发明公开

EP1835489A2 Perpendicular magnetic recording head and method for manufacturing the same 审中-公开
标题翻译： Senkrechter magnetischer Aufzeichnungskopf und Herstellungsverfahrendafür
公开(公告)号：EP1835489A2
公开(公告)日：2007-09-19
申请号：EP07250350.1
申请日：2007-01-29
申请人： Hitachi Global Storage Technologies Netherlands B.V.
发明人： Okada, Tomohiro , Nunokawa, Isao , Etoh, Kimitoshi , Kusukawa, Kikuo
IPC分类号： G11B5/31 , G11B5/127
CPC分类号： G11B5/3163 , G11B5/1278 , G11B5/3116 , G11B5/315 , Y10T29/49021 , Y10T29/49032 , Y10T29/49043 , Y10T29/49044 , Y10T29/49046 , Y10T29/49048 , Y10T29/49052
摘要： [Problem] To provide a trailing side shield around a main pole and control the gap length on its trailing side to high accuracy so as to increase a recording magnetic field gradient.
[Solution] An etching signal layer 16 is provided on a main pole 12, and the gap length on the trailing side of the main pole is controlled to high accuracy by stopping ion milling when a signal from this layer is detected.
摘要翻译：为了提供围绕主极的后侧屏蔽并且将其后侧的间隙长度控制到高准确度，从而增加记录磁场梯度。 [解决方案]在主极12上设置蚀刻信号层16，并且当检测到来自该层的信号时，通过停止离子铣削将主极的后侧的间隙长度控制为高精度。

4. 发明公开

EP1835489A3 Perpendicular magnetic recording head and method for manufacturing the same 审中-公开
标题翻译：它们的垂直磁记录磁头和制造方法
公开(公告)号：EP1835489A3
公开(公告)日：2008-03-26
申请号：EP07250350.1
申请日：2007-01-29
申请人： Hitachi Global Storage Technologies Netherlands B.V.
发明人： Okada, Tomohiro , Nunokawa, Isao , Etoh, Kimitoshi , Kusukawa, Kikuo
IPC分类号： G11B5/31 , G11B5/127
CPC分类号： G11B5/3163 , G11B5/1278 , G11B5/3116 , G11B5/315 , Y10T29/49021 , Y10T29/49032 , Y10T29/49043 , Y10T29/49044 , Y10T29/49046 , Y10T29/49048 , Y10T29/49052
摘要： [Problem] To provide a trailing side shield around a main pole and control the gap length on its trailing side to high accuracy so as to increase a recording magnetic field gradient.
[Solution] An etching signal layer 16 is provided on a main pole 12, and the gap length on the trailing side of the main pole is controlled to high accuracy by stopping ion milling when a signal from this layer is detected.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式