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    Imaging element comprising an electrically-conductive layer containing metal-containing particles and clay particles and a transparent magnetic recording layer
    2.
    发明授权
    Imaging element comprising an electrically-conductive layer containing metal-containing particles and clay particles and a transparent magnetic recording layer 失效
    成像元件包括含有含金属颗粒和粘土颗粒的导电层和透明磁记录层

    公开(公告)号：US6060230A

    公开(公告)日：2000-05-09

    申请号：US215725

    申请日：1998-12-18

    Applicant: Paul A. Christian ,  Dennis J. Eichorst ,  Debasis Majumdar

    Inventor： Paul A. Christian ,  Dennis J. Eichorst ,  Debasis Majumdar

    IPC: B41M5/26 ,  B41M5/40 ,  B41M5/42 ,  G03C1/053 ,  G03C1/85 ,  G03G5/16 ,  G11B5/633 ,  G03C1/89

    CPC classification number: B41M5/26 ,  G03C1/053 ,  G03C1/853 ,  G03G5/16 ,  G11B5/633 ,  B41M5/42 ,  B41M5/426

    Abstract: The present invention is an imaging element which includes a support, an image-forming layer superposed on said support, a transparent magnetic recording layer superposed on said support; and an electrically-conductive layer superposed on said support. The transparent magnetic recording layer is composed of magnetic particles dispersed in a first film-forming polymeric binder. The electrically-conductive layer includes electrically-conductive metal-containing colloidal particles, swellable, smectite clay particles, a first polymeric binder which can sufficiently intercalate inside or exfoliate the smectite clay particles and a second film-forming polymeric binder, wherein the electrically-conductive metal-containing particles and the polymer-intercalated or polymer-exfoliated smectite clay particles are dispersed.

    Abstract translation: 本发明是一种成像元件，其包括支撑体，叠置在所述支撑体上的图像形成层，叠置在所述支撑体上的透明磁记录层; 以及叠置在所述支撑上的导电层。 透明磁记录层由分散在第一成膜聚合物粘合剂中的磁性颗粒组成。 导电层包括导电含金属的胶体颗粒，可膨胀的绿土粘土颗粒，可以充分插入蒙脱石粘土颗粒内部或剥落蒙脱石粘土颗粒的第一聚合物粘合剂和第二成膜聚合物粘合剂，其中导电 分散含金属的颗粒和聚合物插层或聚合物剥离的蒙皂石粘土颗粒。

    Magnetic recording medium and information recording-reproduction method using the same
    3.
    发明授权
    Magnetic recording medium and information recording-reproduction method using the same 失效
    磁记录介质和使用该磁记录介质的信息记录再现方法

    公开(公告)号：US5656385A

    公开(公告)日：1997-08-12

    申请号：US88608

    申请日：1993-07-07

    Applicant: Junsaku Nakajima ,  Akira Takahashi ,  Junji Hirokane ,  Yoshiteru Murakami ,  Kenji Ohta

    Inventor： Junsaku Nakajima ,  Akira Takahashi ,  Junji Hirokane ,  Yoshiteru Murakami ,  Kenji Ohta

    IPC: G11B11/10 ,  G03G5/16 ,  G11B5/00 ,  G11B5/02 ,  G11B5/64 ,  G11B5/65 ,  G11B5/66 ,  G11B5/74 ,  G11B11/105 ,  G11B13/04 ,  G11B19/02

    CPC classification number: G03G5/16 ,  G11B11/10589 ,  G11B13/045 ,  G11B5/00 ,  G11B5/656 ,  G11B11/10504 ,  G11B11/10515 ,  G11B11/10532 ,  G11B19/02 ,  G11B2005/0002 ,  G11B2005/0021 ,  G11B5/74 ,  Y10S428/90

    Abstract: A magnetic recording medium having a recording layer made up of a ferrimagnetic material whose compensation temperature is included within room temperatures and an information recording-reproduction method using the magnetic recording medium. During recording, while a light beam is projected on the recording layer so as to raise the temperature of a recording portion, information is recorded by applying a signal magnetic field from a magnetic head. During reproduction, while a light beam is projected on a reproducing portion of the recording layer so as to raise the temperature thereof, information is reproduced by detecting leakage flux from the reproducing portion by the magnetic head. Thus, during reproduction, no magnetic flux is generated from other portions of the recording layer not irradiated by the light beam. With the arrangement, crosstalk due to leakage flux from adjoining tracks not irradiated by the optical beam can be eliminated. Therefore, track pitches can be made narrower so as to increase recording density of the magnetic recording medium. Further, since crosstalk from adjoining tracks is eliminated, a high S/N can be achieved.

    Abstract translation: 一种磁记录介质，其具有由补偿温度包括在室温内的铁氧体材料制成的记录层和使用该磁记录介质的信息记录再现方法。 在记录期间，当光束投射在记录层上以提高记录部分的温度时，通过施加来自磁头的信号磁场来记录信息。 在再现期间，当光束投射在记录层的再现部分上以升高其温度时，通过由磁头检测来自再现部分的漏磁通来再现信息。 因此，在再现期间，不会由不被光束照射的记录层的其它部分产生磁通量。 利用该布置，可以消除由于未被光束照射的相邻轨道的漏磁通引起的串扰。 因此，可以使轨道间距更窄，以提高磁记录介质的记录密度。 此外，由于消除了来自相邻轨道的串扰，可以实现高S / N。

    Method of forming permanent memory locations in a magnetooptic memory medium
    5.
    发明授权
    Method of forming permanent memory locations in a magnetooptic memory medium 失效
    在磁光存储介质中形成永久记忆位置的方法

    公开(公告)号：US4677601A

    公开(公告)日：1987-06-30

    申请号：US585179

    申请日：1984-03-01

    Applicant: Kenji Ohta ,  Toshihisa Deguchi ,  Akira Takahashi

    Inventor： Kenji Ohta ,  Toshihisa Deguchi ,  Akira Takahashi

    IPC: G03G5/16 ,  G11B7/09 ,  G11B11/10 ,  G11B11/105 ,  H01F10/13 ,  G11B7/007

    CPC classification number: G03G5/16 ,  G11B11/10 ,  G11B11/10582 ,  G11B11/10591 ,  G11B7/0938 ,  H01F10/136 ,  Y10S428/90

    Abstract: Disclosed is a new magnetic storage medium including a layer of amorphous material typically GdDyFe whose Curie recording point (e.g., 120.degree. C.) is lower than its crystallization point (e.g., 350.degree. C.) to enable crystallization to cause variations in its optical properties such as transmittance or reflectivity for thermomagnetic writing. Reversible recordings are set up on the amorphous material layer by a thermomagnetic writing technique, for example Curie point writing, while unchangeable or permanent recordings are set up on the amorphous material layer through laser-activated crystallization of the amorphous material layer.

    Abstract translation: 公开了一种新的磁存储介质，其包括通常具有居里记录点（例如，120℃）低于其结晶点（例如，350℃）的GdDyFe的非晶材料层，以使结晶能够引起其光学变化 热磁写入的透光率或反射率等特性。 通过热磁写入技术（例如居里点写入）在非晶材料层上设置可逆记录，而通过非晶材料层的激光激活结晶，在非晶材料层上建立不变的或永久的记录。

    Opto-magnetic memory
    8.
    发明授权
    Opto-magnetic memory 失效
    光磁记忆

    公开(公告)号：US3836895A

    公开(公告)日：1974-09-17

    申请号：US30438972

    申请日：1972-11-07

    Applicant: PHILIPS CORP

    Inventor： DE JONGE F

    IPC: G11C11/14 ,  G03G5/16 ,  G11B11/10 ,  G11B11/105 ,  G11C13/06 ,  G11C11/42

    CPC classification number: G03G5/16 ,  G11C13/06

    Abstract: A device for the magnetic storage of data which comprises a plate of a magnetizable material having a periodic structure of magnetic domains. Recording data occurs with an external magnetic field having a value at which 2 types of magnetic domains having different sizes can occur. The size of a magnetic domain can be varied by selective irradiation with light.

    Abstract translation: 一种用于磁存储数据的装置，其包括具有磁畴的周期性结构的可磁化材料的板。 利用外部磁场发生记录数据，该外部磁场的值可以出现2种不同尺寸的磁畴。 通过用光的选择性照射可以改变磁畴的尺寸。

    Disk pack assembly and method of making
    9.
    发明授权
    Disk pack assembly and method of making 失效
    磁盘组件及其制造方法

    公开(公告)号：US3753252A

    公开(公告)日：1973-08-14

    申请号：US3753252D

    申请日：1971-06-28

    Applicant: IBM

    Inventor： TIETZE A

    IPC: G03G5/16 ,  G11B5/596 ,  G11B5/716 ,  G11B5/82 ,  G11B5/855 ,  H01F10/00

    CPC classification number: B82Y10/00 ,  G03G5/16 ,  G11B5/59633 ,  G11B5/716 ,  G11B5/743 ,  G11B5/82 ,  G11B5/855

    Abstract: A process for selectively affecting the magnetic properties in a magnetic particulate/resin material, such as an iron oxide-epoxy base coating as utilized on magnetic disks, disk pack assemblies and tapes, by creating an irreversible differential magnetic particle distribution in the surface of the material while maintaining the original surface topography, comprising the steps of exposing at least one preselected area of the surface for reaction with a reagent capable of converting the magnetic particulate material to a non-magnetic form, applying the reagent to the exposed areas, and removing the reagent from the preselected area of surface after a length of time sufficient to effect such conversion in the areas exposed, the reagent having the property of being substantially unreactive with the resin for the length of time of exposure.

    Abstract translation: 通过在磁盘，磁盘组件和磁带的表面上产生不可逆的差分磁性粒子分布来选择性地影响磁性颗粒/树脂材料（例如在磁盘，磁盘组件和磁带上使用的氧化铁 - 环氧基底涂层）的磁性的方法 同时保持原始表面形貌，包括以下步骤：将表面的至少一个预选区域暴露于与能够将磁性颗粒材料转化成非磁性形式的试剂反应，将试剂施加到暴露的区域，并除去 来自表面的预选区域的试剂经过足以在暴露的区域中进行这种转化的时间长度的试剂，该试剂具有在暴露时间长度下与树脂基本上不反应的性质。

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