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    • 63. 发明申请
    • Annealing device and annealing method
    • 退火装置和退火方法
    • US20050201211A1
    • 2005-09-15
    • US10517604
    • 2004-05-21
    • Goro FujitaTakeshi MikiYasuhito TanakaTetsuhiro SakamotoKazuhiko Fujiie
    • Goro FujitaTakeshi MikiYasuhito TanakaTetsuhiro SakamotoKazuhiko Fujiie
    • G11B11/105G11B7/09G11B11/00
    • G11B11/10582G11B11/10523G11B11/10576G11B11/10595
    • The present invention is directed to an annealing apparatus adapted for performing anneal processing with respect to a magneto optical recording medium, which comprises a diffraction optical unit (3) for optically separating light beams emitted from a laser light source (1) into first light beams which are the 0 (zero)-th order diffracted light beams and second and third light beams which are the first order diffracted light beams, an object lens (5) for converging the first light beams to irradiate the first light beams thus converged onto magnetic layers of guide grooves or land portions forming both sides of the guide grooves, and for converging the second and third light beams to irradiate the second and third light beams thus converged onto magnetic layers in the vicinity of the boundary portions between guide grooves and land portions, and a biaxial actuator unit (6) for controlling the object lens (5) on the basis of linear characteristic of a first tracking error signal generated on the basis of intensity distribution of light quantities of rays of return light of the first light beams so that the first light beams follow the guide grooves or the land portions.
    • 本发明涉及一种用于对磁光记录介质进行退火处理的退火设备,该退火设备包括用于将从激光光源(1)发射的光束光学分离成第一光束的衍射光学单元(3) 它们是作为一级衍射光束的0(零)级衍射光束和第二和第三光束,用于会聚第一光束以照射第一光束的物镜(5),从而会聚到磁 形成导向槽的两侧的引导槽或台面部分的层,并且用于会聚第二和第三光束以照射第二和第三光束,从而会聚在引导槽和焊盘部分之间的边界部分附近的磁性层上 以及用于基于第一跟踪误差符号的线性特性来控制物镜(5)的双轴致动器单元(6) 基于第一光束的光量的光的强度分布产生,使得第一光束跟随引导槽或岸台部分。
    • 66. 发明授权
    • Magnetic media patterning utilizing heat-induced phase transition
    • 使用热诱导相变的磁性介质图案
    • US06377414B1
    • 2002-04-23
    • US09708604
    • 2000-11-09
    • Li-Ping Wang
    • Li-Ping Wang
    • G11B502
    • G11B5/012B82Y10/00G11B5/00G11B5/59633G11B5/74G11B5/743G11B5/82G11B5/852G11B5/855G11B5/86G11B11/10523G11B11/10582G11B13/04G11B2005/0002G11B2005/0021
    • Patterned magnetic media are provided at high resolution and pattern definition by a process comprising steps of: applying to a magnetic layer a first uniform magnetic field of a first direction and strength to pre-align the magnetic grains thereof; applying a second uniform magnetic field of a second, opposite direction and of lesser strength than the first magnetic field, sufficient to change the alignment of the magnetic grains only when the temperature thereof is equal to or greater than the Curie temperature Tc; selectively increasing the temperature of a pattern of selected surface areas of the magnetic layer to at least Tc for an interval while applying the second magnetic field to thereby selectively change the alignment of the magnetic grains of the selectively heated surface areas; terminating application of the second magnetic field after completion of the selective realignment; and cooling the selectively heated surface areas to a temperature below Tc, whereby the magnetic pattern is preserved in the magnetic layer.
    • 图案化的磁性介质通过包括以下步骤的方法以高分辨率和图案定义提供:向磁性层施加第一方向和强度的第一均匀磁场以预对准其磁性颗粒; 施加第二相反方向的第二均匀磁场并且具有比第一磁场更小的强度,足以仅在其温度等于或高于居里温度Tc时改变磁性颗粒的对准; 在施加第二磁场的同时选择性地将磁性层的选定表面积的图案的温度升高至至少Tc,从而选择性地改变选择性加热的表面区域的磁性颗粒的取向; 在选择性重新对准完成之后终止第二磁场的施加; 并且将选择性加热的表面区域冷却到低于Tc的温度,由此磁性图案保留在磁性层中。
    • 67. 发明授权
    • Method of reading magneto-optical recording medium
    • 读取磁光记录介质的方法
    • US06307819B1
    • 2001-10-23
    • US09420685
    • 1999-10-19
    • Masahiro BirukawaYasumori HinoNorio Miyatake
    • Masahiro BirukawaYasumori HinoNorio Miyatake
    • G11B1100
    • G11B11/10515G11B5/59677G11B11/10508G11B11/10513G11B11/10523G11B11/10573G11B11/10595
    • A reading method for a magneto-optical recording medium is provided, irradiating laser light as a reading beam and using a magnetic head. High density and high transmission rate are possible and a correct reading can be performed according to the length of recording marks by reading the magneto-optical recording medium while impressing a magnetic field with an orientation promoting the translation of magnetic domain walls. In the magnetic super resolution type magneto-optical recording medium, which attains a signal only from one portion of the irradiation domain of the reading beam and has at least a recording layer and a reading layer on a substrate, the focused laser light is irradiated as a reading beam and the magnetic field is modulated, using the magnetic head, which is equipped with a slider and glides or floats on the recording medium. The magneto-optical recording medium is read, while impressing a magnetic field 161 that accelerates at least the transcription of the magnetization of the recording layer into the reading layer.
    • 提供了一种用于磁光记录介质的读取方法,照射激光作为读取光束并使用磁头。 高密度和高透射率是可能的,并且可以通过读取磁光记录介质,同时以促进磁畴壁的平移的取向施加磁场来根据记录标记的长度来执行正确的读取。 在仅从读取光束的照射域的一部分获得信号并且在基板上至少具有记录层和读取层的磁性超分辨率型磁光记录介质中,聚焦的激光以 使用配备有滑块并在记录介质上滑动或浮动的磁头来调制读取光束和磁场。 读取磁光记录介质,同时施加加速至少将记录层的磁化转录到读取层中的磁场161。
    • 68. 发明授权
    • Recording method for a magneto-optical recording medium for position adjustment of a magnetic head
    • 用于磁头位置调整的磁光记录介质的记录方法
    • US06269056B1
    • 2001-07-31
    • US09421785
    • 1999-10-19
    • Masahiro BirukawaYasumori HinoNorio Miyatake
    • Masahiro BirukawaYasumori HinoNorio Miyatake
    • G11B1100
    • G11B11/10515G11B5/59677G11B11/10508G11B11/10513G11B11/10523G11B11/10573G11B11/10595
    • A reading method for a magneto-optical recording medium is provided, irradiating laser light as a reading beam and using a magnetic head. High density and high transmission rate are possible and a correct reading can be performed according to the length of recording marks by reading the magneto-optical recording medium while impressing a magnetic field with an orientation promoting the translation of magnetic domain walls. In the magnetic super resolution type magneto-optical recording medium, which attains a signal only from one portion of the irradiation domain of the reading beam and has at least a recording layer and a reading layer on a substrate, the focused laser light is irradiated as a reading beam and the magnetic field is modulated, using the magnetic head, which is equipped with a slider and glides or floats on the recording medium. The magneto-optical recording medium is read, while impressing a magnetic field 161 that accelerates at least the transcription of the magnetization of the recording layer into the reading layer.
    • 提供了一种用于磁光记录介质的读取方法,照射激光作为读取光束并使用磁头。 高密度和高透射率是可能的,并且可以通过读取磁光记录介质,同时以促进磁畴壁的平移的取向施加磁场来根据记录标记的长度来执行正确的读取。 在仅从读取光束的照射域的一部分获得信号并且在基板上至少具有记录层和读取层的磁性超分辨率型磁光记录介质中,聚焦的激光以 使用配备有滑块并在记录介质上滑动或浮动的磁头来调制读取光束和磁场。 读取磁光记录介质,同时施加加速至少将记录层的磁化转录到读取层中的磁场161。
    • 69. 发明授权
    • Position adjustment method of a magnetic head using magneto-optical recording medium, and optical recording medium
    • 使用磁光记录介质的磁头的位置调整方法和光记录介质
    • US06222797B1
    • 2001-04-24
    • US09420476
    • 1999-10-19
    • Masahiro BirukawaYasumori HinoNorio Miyatake
    • Masahiro BirukawaYasumori HinoNorio Miyatake
    • G11B1100
    • G11B11/10515G11B5/59677G11B11/10508G11B11/10513G11B11/10523G11B11/10573G11B11/10595
    • A reading method for a magneto-optical recording medium is provided, irradiating laser light as a reading beam and using a magnetic head. High density and high transmission rate are possible and a correct reading can be performed according to the length of recording marks by reading the magneto-optical recording medium while impressing a magnetic field with an orientation promoting the translation of magnetic domain walls. In the magnetic super resolution type magneto-optical recording medium, which attains a signal only from one portion of the irradiation domain of the reading beam and has at least a recording layer and a reading layer on a substrate, the focused laser light is irradiated as a reading beam and the magnetic field is modulated, using the magnetic head, which is equipped with a slider and glides or floats on the recording medium. The magneto-optical recording medium is read, while impressing a magnetic field 161 that accelerates at least the transcription of the magnetization of the recording layer into the reading layer.
    • 提供了一种用于磁光记录介质的读取方法,照射激光作为读取光束并使用磁头。 高密度和高透射率是可能的,并且可以通过读取磁光记录介质,同时以促进磁畴壁的平移的取向施加磁场来根据记录标记的长度来执行正确的读取。 在仅从读取光束的照射域的一部分获得信号并且在基板上至少具有记录层和读取层的磁性超分辨率型磁光记录介质中,聚焦的激光以 使用配备有滑块并在记录介质上滑动或浮动的磁头来调制读取光束和磁场。 读取磁光记录介质,同时施加加速至少将记录层的磁化转录到读取层中的磁场161。
    • 70. 发明授权
    • Magneto-optical recording medium
    • 磁光记录介质
    • US06200673B1
    • 2001-03-13
    • US07607870
    • 1990-11-01
    • Harukazu MiyamotoToshio NiiharaMotoyasu TeraoNorio OhtaMasaaki Kurebayashi
    • Harukazu MiyamotoToshio NiiharaMotoyasu TeraoNorio OhtaMasaaki Kurebayashi
    • G11B566
    • G11B11/10523G11B11/10506G11B11/10515G11B11/10519G11B11/10586Y10T428/265
    • A magneto-optical recording medium having a substrate and a magnetic layer composed of at least a recording layer and a supporting layer and being capable of retrieving information by utilizing the fact that when it is irradiated with a laser beam it produces the magneto-optical effect which affects its reflected light, characterized in that the recording layer has a lower Curie temperature than has the supporting layer and recording layer is thin enough for the laser beam to pass through. A magneto-optical recording medium as defined above, wherein the supporting layer is composed of a first supporting layer and a second supporting layer, and the recording layer, the first supporting layer, and the second supporting layer have Curie temperatures of T1, T2, and T3, respectively, which satisfy the following relationship. T1
    • 一种磁光记录介质,具有基板和由至少记录层和支撑层构成的磁性层,并且能够通过利用这样的事实来检索信息,即当用激光束照射时产生磁光效应 其影响其反射光,其特征在于记录层具有比支撑层低的居里温度,并且记录层足够薄以使激光束通过。1.如上所述的磁光记录介质,其中支撑层 由第一支撑层和第二支撑层组成,并且记录层,第一支撑层和第二支撑层分别具有满足以下关系的T1,T2和T3的居里温度。 光记录介质,其中记录层具有比具有支撑层的更高的居里温度。由于上述 特征,本发明的磁光记录介质能够重写并具有改进的记录灵敏度。