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    • 6. 发明专利
    • Reading element for information and reading method using said element
    • 使用标准元素的信息和阅读方法的阅读元素
    • JPS5750409A
    • 1982-03-24
    • JP12627680
    • 1980-09-11
    • Ricoh Co Ltd
    • MORI KOUJISAKURAI KOUICHISUGANO OSAMU
    • G06K7/10G03G5/16G11B11/10G11B11/105H01F10/12H01F10/13H01F10/14
    • G03G5/16G11B11/10547
    • PURPOSE:To facilitate manufacture, to obtain response at high speed and to enable lengthening by forming an amorphous magnetic substance thin-film layer consisting of a Tb-Fe alloy having a mangetic compensation temperature point within a specified temperature range onto a light transmitting substance substrate. CONSTITUTION:The element 1 is manufactured in such a manner that the amorphous magnetic substance thin-film layer 3 composed of the Tb-Fe alloy having the magnetic compensation temperature point within the temperature range of 0-200 deg.C onto the light transmitting substance substrate 2 in soda glass, etc. through a sputtering method, etc. A reverse bias magnetic field is applied to the thin-film layer 3 in an extent that the coercive force of vertical magnetization does not expire, radioactive heat is given by means of a lamp for a heat source such as a halogen lamp, a magnetic change is brought about to the Tb-Fe alloy according to the quantity of reflected heat corresponding to picture information, and the picture information is recorded to the thin-film layer. When reading, laser rays are scanned by means of a rotary polyhedral mirror, the laser rays, a plane of polarization thereof changes, are reflected by the thin-film layer 3, and the diffrence of the planes of polarization is read by a ray receiving section, thus obtaining the picture information.
    • 目的:为了便于制造,通过在具有规定温度范围内的具有手工补偿温度点的Tb-Fe合金构成的非晶磁性体薄膜层上形成高透光率的高速获得响应并使其能够延长到透光性物质基板上 。 构成要素1以如下方式制造元件1,使得由具有磁补偿温度点的0〜20℃的光学透射物质的Tb-Fe合金构成的非晶磁性体薄膜层3 通过溅射法等在苏打玻璃等中的基板2等。对垂直磁化强度的矫顽力不会过期的程度,对薄膜层3施加反向偏磁场,放射性热量通过 用于诸如卤素灯的热源灯,根据与图像信息对应的反射热量,使Tb-Fe合金发生磁变化,并且将图像信息记录到薄膜层。 当读取时,通过旋转多面体镜对激光进行扫描,激光射线(其偏振面发生变化)被薄膜层3反射,并且通过射线接收来读取偏振面的差异 部分,从而获得图片信息。
    • 10. 发明专利
    • Micro magnetic head
    • 微磁头
    • JPS59215043A
    • 1984-12-04
    • JP8755783
    • 1983-05-20
    • Nippon Telegr & Teleph Corp
    • HATAKEYAMA IWAOMAEDA YASUSHIISHII OSAMUYOSHII SHIZUKA
    • G11B5/31G11B5/33G11B11/10G11B11/105G11B5/32
    • G11B5/332G11B5/31G11B5/3113G11B11/10547
    • PURPOSE:To reproduce a magnetic recording bit having high recording density with high sensitivity and high output by forming the entire micro head core to a magnetic single magnetic domain, and applying a bias magnetic field to the head. CONSTITUTION:Magnetization easy axes 13, 1 of head cores 11, 1 are formed at a right angle to head gaps 13, 4 and two upper and lower head cores are closed sufficiently so as to be coupled together static magnetically thereby forming the entire head cores 11, 1 to a single magnetic domain structure. Currents 13, 2 flow to thin film conductors 11, 2 in the head cores to arrange the magnetization 14, 1 in the core toward the direction of magnetization difficult axis. In opposing the recording media 1, 4 at the upper part of head gaps 13, 4 the head end is magnetized by a magnetic field from the medium. When the bias magnetic field is reduced to zero, the entire head is directed to the magnetization easy axis and its direction depends on the direction of magnetization of the head end. In inverting the magnetization only to the head tip, the entire inversion of magnetization is caused and a minute magnetic field is detected with high sensitivity.
    • 目的:通过将整个微头磁芯形成为磁性单磁畴,并将偏置磁场施加到头部,以再现具有高灵敏度和高输出的高记录密度的磁记录位。 构成:头磁芯11,1的磁化容易轴13,1以与磁头间隙13,4成直角的方式形成,并且两个上和下磁头磁芯被充分闭合,以便被静电磁耦合在一起,从而形成整个磁芯磁芯 11,1到单个磁畴结构。 电流13,2流到磁头磁芯中的薄膜导体11,2,以将磁化强度14,1置于磁化方向的磁化困难轴上。 在与磁头间隙13,4的上部的记录介质1,4相对的情况下,头端被来自介质的磁场磁化。 当偏磁场减小到零时,整个磁头指向易磁化轴,其方向取决于磁头端的磁化方向。 在仅将磁化反转到磁头尖端时,引起整个磁化反转,并以高灵敏度检测微小的磁场。