公开(公告)号：US20080124578A1

公开(公告)日：2008-05-29

申请号：US11946333

申请日：2007-11-28

Applicant: Yong-su KIM ,  Sung-chul LEE

Inventor： Yong-su KIM ,  Sung-chul LEE

IPC: G11B5/00

CPC classification number: G11C11/14 ,  G11C19/0808

Abstract: An apparatus for moving a magnetic domain wall and a memory device using a magnetic field application unit are provided. The apparatus for moving a magnetic domain wall includes a magnetic layer having a plurality of magnetic domains; current supply units that are disposed on both sides of the magnetic layer and supply current to the magnetic layer; and a magnetic field application unit that is disposed on at least one surface of the magnetic layer and applies a magnetic field to the magnetic layer.

Abstract translation: 提供一种使用磁场施加单元移动磁畴壁和存储装置的装置。 用于移动磁畴壁的装置包括具有多个磁畴的磁性层; 电流供给单元，其设置在磁性层的两侧并向磁性层供给电流; 以及设置在所述磁性层的至少一个表面上并向所述磁性层施加磁场的磁场施加单元。

公开(公告)号：US20070194359A1

公开(公告)日：2007-08-23

申请号：US11505969

申请日：2006-08-18

Applicant: Chee-Kheng Lim ,  Eun-sik Kim ,  Yong-su Kim

Inventor： Chee-Kheng Lim ,  Eun-sik Kim ,  Yong-su Kim

IPC: H01L29/94

CPC classification number: G11C11/15 ,  G11C11/5607 ,  G11C19/0808 ,  H01L27/228

Abstract: A magnetic memory device includes a memory region, an input and a sensor. The memory region includes a free layer, a pinned layer and a non-magnetic layer. The free layer has adjacent sectors and a magnetic domain wall. The pinned layer corresponds to the sectors and has a fixed magnetization direction. The non-magnetic layer is formed between the free layer and the pinned layer. The memory region includes a magnetic domain wall stopper for stopping the magnetic domain wall formed at each boundary of the sectors. The input is electrically connected to one end of the free layer for inputting a signal for magnetic domain dragging. The sensor measures a current flowing through the memory region.

Abstract translation: 磁存储器件包括存储区域，输入端和传感器。 存储区包括自由层，钉扎层和非磁性层。 自由层具有相邻扇区和磁畴壁。 被钉扎层对应于扇区并且具有固定的磁化方向。 非磁性层形成在自由层和被钉扎层之间。 存储区域包括用于停止形成在扇区的每个边界处的磁畴壁的磁畴壁塞。 输入电连接到自由层的一端，用于输入用于磁畴拖动的信号。 传感器测量流过存储器区域的电流。

公开(公告)号：US20070188918A1

公开(公告)日：2007-08-16

申请号：US11525828

申请日：2006-09-25

Applicant: Young-hun Im ,  Hoo-san Lee ,  Yong-su Kim

Inventor： Young-hun Im ,  Hoo-san Lee ,  Yong-su Kim

IPC: G11B5/147

CPC classification number: G11B5/3116 ,  G11B5/1278 ,  G11B5/3967

Abstract: A perpendicular magnetic recording head and method of manufacturing the same are provided. The perpendicular magnetic recording head records or reads information on or from a perpendicular magnetic recording medium. The perpendicular magnetic recoding head includes a coil, a main pole, and a return pole. The coil serves as a source for generating a magnetic field. The main pole and the return pole constitute a magnetic path of the magnetic field. The main pole includes an end facing the perpendicular magnetic recording medium. The end includes a leading part serving as a front side and a trailing part serving as a rear side with respect to a movement direction of the perpendicular magnetic recording medium. Both edges of the trailing part are chamfered, and the leading part has a plane inclined with respect to an air-bearing surface (ABS). The return pole has an end spaced from the main pole, and the other end connected with the main pole.

Abstract translation: 提供了一种垂直磁记录头及其制造方法。 垂直磁记录头在垂直磁记录介质上记录或读取信息。 垂直磁记录头包括线圈，主极和返回极。 线圈用作产生磁场的源。 主极和返回极构成磁场的磁路。 主极包括面向垂直磁记录介质的一端。 该端部包括用作前侧的前导部分和用作相对于垂直磁记录介质的移动方向的后侧的后部。 尾部的两个边缘都被倒角，并且前导部分具有相对于空气轴承表面（ABS）倾斜的平面。 返回极具有与主极间隔开的端部，另一端与主极连接。

公开(公告)号：US20070003795A1

公开(公告)日：2007-01-04

申请号：US11477624

申请日：2006-06-30

Applicant: Hoon-sang Oh ,  Yong-su Kim ,  No-yeol Park ,  Hoo-san Lee ,  Chul-min Choi

Inventor： Hoon-sang Oh ,  Yong-su Kim ,  No-yeol Park ,  Hoo-san Lee ,  Chul-min Choi

IPC: G11B5/66

CPC classification number: G11B5/667

Abstract: A perpendicular magnetic recording medium including a soft magnetic underlayer. The perpendicular magnetic recording medium includes: a lower structural body including an anti-ferromagnetic layer; a first soft magnetic underlayer, a non-magnetic layer, and a second soft magnetic underlayer sequentially formed on the anti-ferromagnetic layer, where the thickness ratio of the second soft magnetic underlayer to that of the first soft magnetic underlayer is designed to be within specific range; and a recording layer formed on the second soft magnetic underlayer. Therefore, noise generated on the soft magnetic underlayer due to external magnetic fields of a magnetic head and a voice coil motor can be reduced greatly.

Abstract translation: 包括软磁性底层的垂直磁记录介质。 垂直磁记录介质包括：包括反铁磁层的下结构体; 顺序地形成在反铁磁层上的第一软磁性底层，非磁性层和第二软磁性底层，其中第二软磁性底层与第一软磁性底层的厚度比设计为在 具体范围 以及形成在第二软磁性底层上的记录层。 因此，可以大大降低由于磁头和音圈电机的外部磁场而在软磁性底层上产生的噪声。

公开(公告)号：US20060256473A1

公开(公告)日：2006-11-16

申请号：US11413000

申请日：2006-04-28

Applicant: Chee-kheng Lim ,  Yong-su Kim ,  Hoo-san Lee

Inventor： Chee-kheng Lim ,  Yong-su Kim ,  Hoo-san Lee

IPC: G11B5/147

CPC classification number: G11B5/1278 ,  G11B5/11

Abstract: A perpendicular magnetic recording head including: a data recording module comprising a main pole, a return pole, and a coil wrapped around the main pole; and a data reproduction module including magnetic shield layers and a reading device located between the magnetic shield layers, wherein the width of a lower end of the main pole is gradually reduced in a downward direction thereof, and the lower end of the main pole comprises a first part and a second part extending from the first part, the first part having a curved surface of a first curvature and the second part having a curved surface of a second curvature. The first curvature can be equal to or different from the second curvature, and magnetic shield devices can be further disposed on both sides of the lower end of the main pole.

Abstract translation: 一种垂直磁记录头，包括：数据记录模块，包括主极，返回极和缠绕在主极上的线圈; 以及包括磁屏蔽层和位于磁屏蔽层之间的读取装置的数据再现模块，其中主极的下端的宽度在其向下的方向上逐渐减小，并且主极的下端包括 第一部分和第二部分从第一部分延伸，第一部分具有第一曲率的曲面，第二部分具有第二曲率的曲面。 第一曲率可以等于或不同于第二曲率，并且磁屏蔽装置可以进一步设置在主极的下端的两侧。

公开(公告)号：US20060215317A1

公开(公告)日：2006-09-28

申请号：US11352316

申请日：2006-02-13

Applicant: Hoo-san Lee ,  Yong-su Kim

Inventor： Hoo-san Lee ,  Yong-su Kim

IPC: G11B5/147

CPC classification number: G11B5/3163 ,  G11B5/1278

Abstract: A magnetic recording head and a method of manufacturing the same are provided. The method includes layering sequentially first magnetic layer and an insulating cap layer on a first insulating layer; forming a mask pattern of a desired width on the insulating cap layer, and etching the first magnetic layer and the insulating cap layer until the first insulating layer is exposed, thereby forming a trapezoidal layered portion; depositing an insulating material on the first insulating layer to form a second insulating layer to bury a periphery of the trapezoidal layered portion; and forming a second magnetic layer on the second insulating layer.

Abstract translation: 提供磁记录头及其制造方法。 该方法包括在第一绝缘层上依次层叠第一磁性层和绝缘覆盖层; 在所述绝缘覆盖层上形成期望宽度的掩模图案，并且蚀刻所述第一磁性层和所述绝缘盖层直到所述第一绝缘层露出，从而形成梯形层叠部分; 在所述第一绝缘层上沉积绝缘材料以形成第二绝缘层以埋设所述梯形分层部分的周边; 以及在所述第二绝缘层上形成第二磁性层。

公开(公告)号：US07113730B2

公开(公告)日：2006-09-26

申请号：US10610797

申请日：2003-07-02

Applicant: Geun-yong Park ,  Woo-yong Park ,  Yong-su Kim

Inventor： Geun-yong Park ,  Woo-yong Park ,  Yong-su Kim

IPC: G03G15/10

CPC classification number: G03G15/104

Abstract: An apparatus prevents developer wraparound in a wet electrophotographic printer using wraparound preventing units. Each of the wraparound preventing units has varied diameter parts formed at both ends of a developing roller, and matching parts formed at both ends of a metering roller to correspond to the varied diameter parts of the developing roller. Since the varied diameter parts and the matching parts are respectively installed at both ends of the developing roller and the metering roller, developer wraparound is not generated in the developing roller and a photosensitive roller during development.

Abstract translation: 一种装置防止湿式电子照相打印机中的显影剂卷绕使用环绕防止单元。 每个环绕防护单元具有形成在显影辊的两端的直径变化的部分，以及形成在计量辊的两端的匹配部件，以对应于显影辊的变化的直径部分。 由于各直径部分和匹配部分分别安装在显影辊和计量辊的两端，所以显影辊和感光辊在显影期间不会产生显影剂卷绕。

公开(公告)号：US20060176613A1

公开(公告)日：2006-08-10

申请号：US11247305

申请日：2005-10-12

Applicant: Chee-Kheng Lim ,  Yong-su Kim

Inventor： Chee-Kheng Lim ,  Yong-su Kim

IPC: G11B5/147

CPC classification number: G11B5/3116 ,  G11B5/3143

Abstract: Provided is a magnetic head having a magnetic thin film structure that reduces the effect of a stray field and generates a magnetization reversal at a high speed. The magnetic head includes a first pole, a second pole spaced apart from the first pole, and an induction coil that induces a magnetic field in the first and second poles, wherein the first and second poles include a pole tip in which a leakage flux for recording is generated, and a head yoke that guides the flux flowing in the poles, and at least one implant for controlling a magnetic domain, the implant formed in at least one of the first and second poles. The magnetic thin film can effectively reduce the effect of a stray field entering from the outside, and can control a domain wall motion so that high speed magnetic recording is possible, by generating a magnetization reversal at a high speed corresponding to a magnetic field applied by an induction coil.

公开(公告)号：US20060067739A1

公开(公告)日：2006-03-30

申请号：US11224032

申请日：2005-09-13

Applicant: Dong-ju Kang ,  Yong-su Kim ,  Jean-man Sur ,  Sang-don Lee

Inventor： Dong-ju Kang ,  Yong-su Kim ,  Jean-man Sur ,  Sang-don Lee

IPC: G03G15/10

CPC classification number: G03G15/104 ,  G03G2215/0685

Abstract: An apparatus for uniformly supplying the liquid developer and an image forming apparatus having the same are provided. The developer supplying apparatus includes a manifold connected to a connection tube for supplying a liquid developer from an outside and having a developer inlet through which the liquid developer flows into a developing chamber, and a developer dispersion unit, disposed in the developing chamber and located adjacent to an upper part of the developer inlet, for guiding the liquid developer flowing into the developing chamber through the developer inlet so that the liquid developer is dispersed in a horizontal direction. The liquid developer flowing into the lower part of the developing chamber does not directly move toward the upper part of the developing chamber, but is dispersed in a horizontal direction, so that the liquid developer is uniformly dispersed into the whole part of the developing chamber.

Abstract translation: 提供均匀供给液体显影剂的装置和具有该液体显影剂的图像形成装置。 显影剂供给装置包括连接到连接管的歧管，用于从外部供应液体显影剂并具有液体显影剂通过其流入显影室的显影剂入口和显影剂分散单元，其设置在显影室中并且位于相邻 到显影剂入口的上部，用于引导通过显影剂入口流入显影室的液体显影剂，使得液体显影剂在水平方向上分散。 流入显影室下部的液体显影剂不直接朝向显影室的上部移动，而是沿水平方向分散，使液体显影剂均匀地分散在显影室的整个部分。

公开(公告)号：US20050105214A1

公开(公告)日：2005-05-19

申请号：US10943232

申请日：2004-09-17

Applicant: Young-hun Im ,  Yong-su Kim

Inventor： Young-hun Im ,  Yong-su Kim

IPC: G11B5/31 ,  G11B5/127 ,  G11B5/187

CPC classification number: G11B5/1875

Abstract: Provided is a magnetic recording head including a return pole, a writing pole spaced by a predetermined distance from the return pole, an induction writing coil for inducing a magnetic field to be formed across the writing pole, and a plurality of shield layers formed on the writing pole. Accordingly, magnetic fields generated inside and outside the magnetic recording head are prevented from concentrating on the return pole, and information is effectively written on and erased from an information recording media.

Abstract translation: 提供了一种磁记录头，其包括返回极，与返回极隔开预定距离的书写杆，用于引导跨越书写极的磁场的感应写入线圈，以及形成在该磁极上的多个屏蔽层 书写杆 因此，防止在磁记录头内部和外部产生的磁场集中在返回极上，并且有效地将信息从信息记录介质写入并擦除。