公开(公告)号：US08427790B2

公开(公告)日：2013-04-23

申请号：US12216162

申请日：2008-06-30

申请人： Kei Hirata ,  Kazuki Sato ,  Yohei Koyanagi ,  Takayasu Kanaya ,  Takeo Kagami

发明人： Kei Hirata ,  Kazuki Sato ,  Yohei Koyanagi ,  Takayasu Kanaya ,  Takeo Kagami

IPC分类号： G11B5/39

CPC分类号： G11B5/398 ,  G11B5/3166 ,  G11B5/3169 ,  G11B5/3173 ,  G11B5/3932

摘要： A thin film magnetic head includes a magnetoresistive element having a recording-medium-facing-surface which is to be faced with a magnetic recording medium; a magnetic bias layer located on a side opposite to the recording-medium-facing-surface of the magnetoresistive element, and applying a bias magnetic field to the magnetoresistive element in a direction orthogonal to the recording-medium-facing-surface; and a resistive film pattern having the recording-medium-facing-surface, the resistive film pattern being located side by side with the magnetoresistive element in a track-width direction.

摘要翻译： 薄膜磁头包括具有面向磁记录介质的记录介质面对表面的磁阻元件; 位于与所述磁阻元件的记录介质相对表面相对的一侧的磁偏置层，并且在与所述记录介质相对表面正交的方向上向所述磁阻元件施加偏置磁场; 以及具有记录介质面向表面的电阻膜图案，电阻膜图案与磁阻元件沿轨道宽度方向并排定位。

公开(公告)号：US08295015B2

公开(公告)日：2012-10-23

申请号：US12320878

申请日：2009-02-06

申请人： Naoki Ohta ,  Hiroshi Yamazaki ,  Kosuke Tanaka ,  Takayasu Kanaya ,  Kei Hirata

发明人： Naoki Ohta ,  Hiroshi Yamazaki ,  Kosuke Tanaka ,  Takayasu Kanaya ,  Kei Hirata

IPC分类号： G11B5/39

CPC分类号： G11B5/3932 ,  G01R33/098

摘要： The invention is devised to provide a magnetoresistive element that is hardly susceptible to harmful influence of unnecessary magnetic fields and noise of heat even when reduction in size is achieved to be adaptable to higher recording density, and therefore that is excellent in operational reliability. The magnetoresistive element includes a stacked structure including, in order: a magnetically pinned layer whose magnetization direction is fixed in a given direction; a non-magnetic layer; a magnetically free layer whose magnetization direction changes according to an external magnetic field; and an antiferromagnetic bias layer exchange-coupled with the magnetically free layer. The exchange-coupling magnetic field between the magnetically free layer and the antiferromagnetic bias layer is smaller than a saturation magnetic field of the magnetically free layer.

摘要翻译： 本发明的目的在于提供一种磁阻元件，即使实现了适应于较高记录密度的尺寸减小，几乎不易受不必要的磁场的有害影响和热噪声的影响，因此具有优异的操作可靠性。 磁阻元件包括层叠结构，其顺序包括：磁性固定层，其磁化方向在给定方向上固定; 非磁性层; 磁化方向根据外部磁场而变化的无磁性层; 和与磁性层交换耦合的反铁磁偏置层。 磁性层和反铁磁偏置层之间的交换耦合磁场小于无磁层的饱和磁场。

公开(公告)号：US20120140361A1

公开(公告)日：2012-06-07

申请号：US12961939

申请日：2010-12-07

申请人： Minoru OTA ,  Kei Hirata ,  Kenkichi Anagawa

发明人： Minoru OTA ,  Kei Hirata ,  Kenkichi Anagawa

IPC分类号： G11B5/127 ,  G11B21/24

CPC分类号： G11B5/3116 ,  G11B5/1278 ,  G11B5/3163 ,  G11B19/045

摘要： A magnetic head includes a main magnetic pole layer and a yoke layer. The main magnetic pole layer generates a magnetic flux of a recording magnetic field and includes a magnetic pole front part and a magnetic pole rear part. The yoke layer is disposed at the magnetic pole rear part and includes a yoke front part and a yoke rear part. The magnetic pole front part extends on a magnetic medium-facing surface side of the magnetic pole rear part with a width in a track width direction being smaller than that of the magnetic pole rear part. The yoke front part extends on the magnetic medium-facing surface side of the yoke rear part with a width in the track width direction being larger than that of the magnetic pole rear part and that of the yoke rear part.

摘要翻译： 磁头包括主磁极层和磁轭层。 主磁极层产生记录磁场的磁通量，并包括磁极前部和磁极后部。 磁轭层设置在磁极后部，并且包括磁轭前部和磁轭后部。 磁极前部在磁极后部的面向磁性介质的表面侧延伸，磁道宽度方向的宽度小于磁极后部的宽度。 磁轭前部在磁轭后部的面向磁介质的表面侧延伸，磁道宽度方向上的宽度大于磁极后部和磁轭后部的宽度。

公开(公告)号：US08170447B2

公开(公告)日：2012-05-01

申请号：US12020866

申请日：2008-01-28

申请人： Keisuke Kubo ,  Kei Hirata ,  Tomio Onuki ,  Takeshi Okoshi ,  Toshikazu Tsumita ,  Taiyou Uehara ,  Takashi Sakamoto ,  Naoya Iwata ,  Hirohisa Kohno ,  Akihide Kawamura ,  Kazunori Koshimori

发明人： Keisuke Kubo ,  Kei Hirata ,  Tomio Onuki ,  Takeshi Okoshi ,  Toshikazu Tsumita ,  Taiyou Uehara ,  Takashi Sakamoto ,  Naoya Iwata ,  Hirohisa Kohno ,  Akihide Kawamura ,  Kazunori Koshimori

IPC分类号： G03G15/00

CPC分类号： G03G15/0813 ,  G03G15/0898 ,  G03G21/1676 ,  G03G2221/163

摘要： The image forming apparatus is provided with: an image carrier; an exposure member that exposes the image carrier and forms an electrostatic latent image on the image carrier; a developing member that develops the electrostatic latent image formed on the image carrier; and a contact-retracting unit that rotates the developing member taking a predetermined position as the rotational center, and brings the developing member in contact with or proximity to the image carrier or retracts the developing member from the image carrier.

摘要翻译： 图像形成装置具有：图像载体; 曝光构件，其暴露所述图像载体并在所述图像载体上形成静电潜像; 使形成在图像载体上的静电潜像显影的显影部件; 以及接触回缩单元，其使所述显影构件以预定位置为旋转中心旋转，并使所述显影构件与所述图像载体接触或接近，或者使所述显影构件从所述图像载体缩回。

公开(公告)号：US08085038B2

公开(公告)日：2011-12-27

申请号：US11753836

申请日：2007-05-25

申请人： Takumi Uesugi ,  Takeo Kagami ,  Tetsuro Sasaki ,  Kei Hirata ,  Masaru Hirose ,  Chi Man Lee ,  Kwok Piu Tso

发明人： Takumi Uesugi ,  Takeo Kagami ,  Tetsuro Sasaki ,  Kei Hirata ,  Masaru Hirose ,  Chi Man Lee ,  Kwok Piu Tso

IPC分类号： G01R33/12 ,  G11B5/00

CPC分类号： G11B5/455 ,  G11B5/3189 ,  G11B5/3903

摘要： A noise-testing method for a thin-film magnetic head with an MR read head element and a heating unit capable of applying a heat and a stress to the MR read head element, includes a step of applying alternately and discontinuously with each other an electrical power having a first level and an electrical power having a second level higher than the first level to the heating unit, and a step of evaluating the thin-film magnetic head by measuring a noise output or noise outputs obtained from the MR read head element when the electrical power or the electrical powers are applied to the heating unit.

摘要翻译： 具有MR读取头元件的薄膜磁头和能够向MR读取头元件施加热和应力的加热单元的噪声测试方法包括以下步骤：交替地和不连续地施加电气 具有第一电平的功率和具有比加热单元的第一电平高的第二电平的电力;以及通过测量从MR读取头元件获得的噪声输出或噪声输出来评估薄膜磁头的步骤， 电力或电力被施加到加热单元。

公开(公告)号：US20110310510A1

公开(公告)日：2011-12-22

申请号：US12819552

申请日：2010-06-21

申请人： Kenkichi ANAGAWA ,  Katsuki Kurihara ,  Takeo Kagami ,  Kei Hirata ,  Minoru Ota

发明人： Kenkichi ANAGAWA ,  Katsuki Kurihara ,  Takeo Kagami ,  Kei Hirata ,  Minoru Ota

IPC分类号： G11B5/10

CPC分类号： G11B5/3146 ,  G11B5/1278 ,  G11B5/235 ,  G11B5/315

摘要： A main magnetic-pole layer is provided with, at the tip end portion thereof, a trailing shied on the trailing side via a non-magnetic gap layer, and the non-magnetic gap layer includes therein one or more magnetic layers. This magnetic layer appropriately controls the amount of magnetic fluxes coming from the tip end portion of the main magnetic-pole layer for capturing into the trailing shield because the magnetic fluxes coming from the tip end portion of the main magnetic-pole layer go through the magnetic layer before being captured into the trailing shield.

摘要翻译： 主磁极层在其末端部分经由非磁隙层在后侧设置有尾部，非磁性间隙层包括一个或多个磁性层。 该磁性层适当地控制来自主磁极层的前端部分的磁通量，用于捕获到后屏蔽件中，因为来自主磁极层的末端部分的磁通量通过磁 在被捕获到后盾之前。

公开(公告)号：US08009392B2

公开(公告)日：2011-08-30

申请号：US12318924

申请日：2009-01-13

申请人： Takayasu Kanaya ,  Kei Hirata ,  Yohei Koyanagi ,  Seiichi Takayama ,  Shinji Hara ,  Toshiyuki Ayukawa

发明人： Takayasu Kanaya ,  Kei Hirata ,  Yohei Koyanagi ,  Seiichi Takayama ,  Shinji Hara ,  Toshiyuki Ayukawa

IPC分类号： G11B5/33 ,  G11B5/48 ,  G11B5/60

CPC分类号： G11B5/3932 ,  G01R33/098

摘要： Foundation layers of a thin film magnetic head are disposed between insulating layers and bias magnetic field application layers, and are configured of Cr or Cr alloy. The insulating layers are configured of a Si oxide such that the Si content of the Si oxide is in the range of 30˜56 at % (atom %) and that the atom ratio of oxygen to Si (O/Si) is in the range of 0.8˜1.3. With the configuration, the occurrence rate of noise is reduced.

摘要翻译： 薄膜磁头的底层设置在绝缘层和偏置磁场施加层之间，并由Cr或Cr合金构成。 绝缘层由Si氧化物构成，使得Si氧化物的Si含量在30〜56at％（原子％）的范围内，氧与Si（O / Si）的原子比在范围内 为0.8〜1.3。 通过该结构，噪声的发生率降低。

公开(公告)号：US07937029B2

公开(公告)日：2011-05-03

申请号：US12422729

申请日：2009-04-13

申请人： Hirokazu Murase ,  Kei Hirata

发明人： Hirokazu Murase ,  Kei Hirata

IPC分类号： G03G15/08 ,  G03G15/00

CPC分类号： G03G15/0886 ,  G03G15/0872 ,  G03G15/0879

摘要： An accommodating vessel, which is detachably attached to a vessel receiving part of a casing of an image forming device to accommodate an image forming material, the accommodating vessel including: a vessel main body that includes a tubular part; a cover member that includes a fitted part; at least one positioned protrusion; and at least one positioned positioning protrusion, wherein the at least one positioned protrusion includes: a guide protrusion that extends in a rotating direction of the cover member; and a plurality of rotation stop protrusions that extends in opposite directions to each other relative to the guide protrusion along a pushing and pulling direction of the cover member, and Wherein the positioning protrusion includes a stop wall that abuts on the guide protrusion and the plurality of rotation stop protrusions of the at least one positioned protrusion to be stopped.

摘要翻译： 一种容纳容器，其可拆卸地附接到容纳图像形成装置的壳体的容纳部分以容纳成像材料的容器，所述容纳容器包括：容器主体，其包括管状部分; 盖构件，其包括装配部; 至少一个定位突起; 以及至少一个定位的定位突起，其中所述至少一个定位突起包括：引导突起，其沿所述盖构件的旋转方向延伸; 以及沿所述盖构件的推拉方向相对于所述引导突起彼此相反方向延伸的多个旋转止动突起，其中，所述定位突起包括抵接在所述引导突起上的止动壁， 所述至少一个定位突起的旋转止动凸起被停止。

公开(公告)号：US20110090595A1

公开(公告)日：2011-04-21

申请号：US12588440

申请日：2009-10-15

申请人： Kei Hirata ,  Hideyuki Ukita ,  Shin Narushima ,  Isamu Toba ,  Hiromichi Umehara ,  Hisayoshi Watanabe ,  Hideyuki Yatsu

发明人： Kei Hirata ,  Hideyuki Ukita ,  Shin Narushima ,  Isamu Toba ,  Hiromichi Umehara ,  Hisayoshi Watanabe ,  Hideyuki Yatsu

IPC分类号： G11B5/127

CPC分类号： G11B5/1278 ,  G11B5/3116 ,  G11B5/3163

摘要： A main magnetic pole includes a first part extending from a medium facing surface to a point at a predetermined distance from the medium facing surface, and a second part other than the first part. An accommodation part for accommodating the main magnetic pole includes: a first layer having a groove; a second layer lying between the first layer and the main magnetic pole in the first layer's groove; and a third layer interposed in part between the second layer and the main magnetic pole in the first layer's groove. The second layer is formed of a metal material different from a material used to form the first layer. The third layer is formed of an inorganic insulating material. The second and third layers lie between the first layer and the first part. The second layer lies between the bottom of the first layer's groove and the second part, but the third layer does not. The distance between the bottom of the first layer's groove and the second part is smaller than that between the bottom and the first part.

公开(公告)号：US07872831B2

公开(公告)日：2011-01-18

申请号：US11756134

申请日：2007-05-31

申请人： Kei Hirata ,  Tetsuya Roppongi ,  Kiyoshi Noguchi

发明人： Kei Hirata ,  Tetsuya Roppongi ,  Kiyoshi Noguchi

IPC分类号： G11B5/127

CPC分类号： G11B5/1278 ,  B82Y10/00 ,  G11B5/11 ,  G11B5/3116 ,  G11B5/3146 ,  G11B5/743

摘要： The invention provides a thin-film magnetic head wherein the combined release angle Φ for a dominant recording magnetic field generated from a magnetic pole layer toward a patterned media for the purpose of recording magnetic information is set to within an angle range of 35° to 65° with respect to a patterned media surface. It is thus possible to invert, with efficiency and reliability, the directions of magnetization of isolate bits lined up on the patterned media for high-density recording.

摘要翻译： 本发明提供了一种薄膜磁头，其中用于记录磁信息的从磁极层向图案化介质产生的主要记录磁场的组合释放角Φ设定在35°至65°的角度范围内 °相对于图案化介质表面。 因此，可以以效率和可靠性反转排列在图案化介质上的高密度记录的隔离位的磁化方向。