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公开(公告)号：US07563522B2
公开(公告)日：2009-07-21
申请号：US11555897
申请日：2006-11-02
CPC分类号： G11B5/70 , G11B5/00813 , G11B5/714 , G11B5/738 , G11B5/78 , G11B2005/001 , Y10T428/12993
摘要： The present invention provides a magnetic recording medium comprising a magnetic layer with excellent surface smoothness, which comprises a thin film magnetic layer of thickness in a range from 0.03 to 0.30 μm that is ideal for short wavelength recording, and displays superior electromagnetic conversion characteristics. The magnetic recording medium comprises a magnetic layer containing at least a ferromagnetic powder and a binder resin on one surface of a non-magnetic support, wherein the thickness of the magnetic layer is within a range from 0.03 to 0.30 μm, and the number of concavities with a depth of 30 nm or greater in the surface of the magnetic layer is 5 per 1 cm2 of surface area or less. Preferably, the value of the average depth Rv6 of the surface of the magnetic layer, as measured by a contact type surface roughness meter, is 12 nm or less.
摘要翻译： 本发明提供一种包括具有优异表面平滑度的磁性层的磁记录介质，其包括厚度在0.03至0.30μm范围内的薄膜磁性层，这对于短波长记录是理想的，并且显示出优异的电磁转换特性。 磁记录介质包括在非磁性载体的一个表面上至少含有铁磁粉末和粘合剂树脂的磁性层，其中磁性层的厚度在0.03至0.30μm的范围内，并且凹部的数量 磁性层的表面的深度为30nm以上的表面积为1cm 2以下。 优选地，通过接触型表面粗糙度计测量的磁性层的表面的平均深度Rv6的值为12nm以下。
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公开(公告)号：US20070160876A1
公开(公告)日：2007-07-12
申请号：US11555897
申请日：2006-11-02
IPC分类号： G11B5/708
CPC分类号： G11B5/70 , G11B5/00813 , G11B5/714 , G11B5/738 , G11B5/78 , G11B2005/001 , Y10T428/12993
摘要： The present invention provides a magnetic recording medium comprising a magnetic layer with excellent surface smoothness, which comprises a thin film magnetic layer of thickness in a range from 0.03 to 0.30 μm that is ideal for short wavelength recording, and displays superior electromagnetic conversion characteristics. The magnetic recording medium comprises a magnetic layer containing at least a ferromagnetic powder and a binder resin on one surface of a non-magnetic support, wherein the thickness of the magnetic layer is within a range from 0.03 to 0.30 μm, and the number of concavities with a depth of 30 nm or greater in the surface of the magnetic layer is 5 per 1 cm2 of surface area or less. Preferably, the value of the average depth Rv6 of the surface of the magnetic layer, as measured by a contact type surface roughness meter, is 12 nm or less.
摘要翻译： 本发明提供一种包括具有优异表面平滑度的磁性层的磁记录介质，其包括厚度在0.03至0.30μm范围内的薄膜磁性层，这对于短波长记录是理想的，并且显示出优异的电磁转换特性。 磁记录介质包括在非磁性载体的一个表面上至少含有铁磁粉末和粘合剂树脂的磁性层，其中磁性层的厚度在0.03至0.30μm的范围内，并且凹部的数量 磁性层表面的深度为30nm以上的表面积为1cm 2以下。 优选地，通过接触型表面粗糙度计测量的磁性层的表面的平均深度Rv6的值为12nm以下。
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公开(公告)号：US07157163B2
公开(公告)日：2007-01-02
申请号：US10823564
申请日：2004-04-14
CPC分类号： G11B5/70 , G11B5/00813 , G11B5/714 , G11B5/738 , G11B5/78 , G11B2005/001 , Y10T428/12993
摘要： The present invention provides a magnetic recording medium comprising a magnetic layer with excellent surface smoothness, which comprises a thin film magnetic layer of thickness in a range from 0.03 to 0.30 μm that is ideal for short wavelength recording, and displays superior electromagnetic conversion characteristics. The magnetic recording medium comprises a magnetic layer containing at least a ferromagnetic powder and a binder resin on one surface of a non-magnetic support, wherein the thickness of the magnetic layer is within a range from 0.03 to 0.30 μm, and the number of concavities with a depth of 30 nm or greater in the surface of the magnetic layer is 5 per 1 cm2 of surface area or less. Preferably, the value of the average depth Rv6 of the surface of the magnetic layer, as measured by a contact type surface roughness meter, is 12 nm or less.
摘要翻译： 本发明提供一种包括具有优异表面平滑度的磁性层的磁记录介质，其包括厚度在0.03至0.30μm范围内的薄膜磁性层，这对于短波长记录是理想的，并且显示出优异的电磁转换特性。 磁记录介质包括在非磁性载体的一个表面上至少含有铁磁粉末和粘合剂树脂的磁性层，其中磁性层的厚度在0.03至0.30μm的范围内，并且凹部的数量 磁性层表面的深度为30nm以上的表面积为1cm 2以下。 优选地，通过接触型表面粗糙度计测量的磁性层的表面的平均深度Rv6的值为12nm以下。
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公开(公告)号：US07208237B2
公开(公告)日：2007-04-24
申请号：US10823680
申请日：2004-04-14
摘要： The present invention provides a magnetic recording medium comprising a thin film magnetic layer of thickness in a range from 0.03 to 0.30 μm, and having excellent surface smoothness and superior electromagnetic conversion characteristics. The magnetic recording medium comprises a lower non-magnetic layer containing at least a non-magnetic powder and a binder resin on one surface of a non-magnetic support, an upper magnetic layer containing at least a ferromagnetic powder and a binder resin on the lower non-magnetic layer, and a back coat layer on the other surface of the non-magnetic support, wherein the thickness of the upper magnetic layer is within the range from 0.03 to 0.30 μm, the AFM surface roughness Ra of the upper magnetic layer is 6 nm or less, and the number of concavities with a depth of 30 nm or greater in the surface of the upper magnetic layer is 5 per 1 cm2 of surface area or less.
摘要翻译： 本发明提供一种磁记录介质，其包括厚度在0.03〜0.30μm范围内的薄膜磁性层，并且具有优异的表面平滑度和优异的电磁转换特性。 磁记录介质包括在非磁性载体的一个表面上至少含有非磁性粉末和粘合剂树脂的下部非磁性层，在下部的至少含有铁磁性粉末和粘合剂树脂的上部磁性层 非磁性层的非磁性层和背涂层，其中上磁性层的厚度在0.03〜0.30μm的范围内，上磁性层的AFM表面粗糙度Ra为 6nm以下，上磁性层的表面的深度为30nm以上的凹部的数量为每1cm 2以上的表面积以下。
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公开(公告)号：US07011900B2
公开(公告)日：2006-03-14
申请号：US10806096
申请日：2004-03-23
申请人： Akihiko Seki , Takayoshi Kuwajima , Naoto Yajima
发明人： Akihiko Seki , Takayoshi Kuwajima , Naoto Yajima
IPC分类号： G11B5/735
CPC分类号： G11B5/70 , G11B5/00813 , G11B5/735 , G11B5/78 , Y10T428/12465 , Y10T428/12993
摘要： A magnetic recording medium is prepared by coating a dispersion of non-magnetic powder and ferromagnetic powder in a binder and a dispersion of ferromagnetic powder in a binder to a non-magnetic substrate by a wet-on-wet coating technique to form subordinate and magnetic layers on the substrate, and subjecting the layers to magnetic field orientation. The subordinate layer has a Br of 80 to 400 gauss, and the magnetic layer has a thickness of 0.1 to 0.4 μm. The medium has surface smoothness and good electromagnetic characteristics and lends itself to recording and reproducing signals having a minimum wavelength of 0.2 to 0.7 μm.
摘要翻译： 通过湿式湿式涂布技术将非磁性粉末和铁磁性粉末的分散体涂布在粘合剂中，并将铁磁性粉末在粘合剂中的分散体涂覆在非磁性基材上，形成磁性记录介质 层，并且对层进行磁场取向。 下层具有80〜400高斯的Br，磁性层的厚度为0.1〜0.4μm。 该介质具有表面平滑度和良好的电磁特性，并且适用于记录和再现最小波长为0.2至0.7μm的信号。
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公开(公告)号：US20070026264A1
公开(公告)日：2007-02-01
申请号：US11461051
申请日：2006-07-31
摘要： A magnetic recording medium has a non-magnetic layer and a magnetic layer formed in that order on one surface of a non-magnetic support and a back coat layer formed on the other surface of the non-magnetic support. The non-magnetic layer is formed so as to include at least one of α-iron oxide and α-iron hydroxide. The magnetic layer is formed so as to include a ferromagnetic alloy powder. The back coat layer is formed so as to include carbon black, and barium sulfate. At least one of the non-magnetic layer and the magnetic layer includes lubricant. The layers are formed so that the amount of SO42− eluted when the magnetic recording medium is immersed in water at 70° C. is in a range of 300 ppm to 600 ppm inclusive relative to the weight of the magnetic recording medium.
摘要翻译： 磁记录介质具有非磁性层和在非磁性载体的一个表面上形成的磁性层和形成在非磁性载体的另一个表面上的背涂层。 非磁性层形成为包括α-氧化铁和α-氢氧化铁中的至少一种。 磁性层形成为包含铁磁性合金粉末。 背涂层形成为包括炭黑和硫酸钡。 非磁性层和磁性层中的至少一个包括润滑剂。 这些层被形成为使得当磁记录介质浸入70℃的水中时洗脱的SO 3 - 2的量在300ppm至 相对于磁记录介质的重量为600ppm。
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公开(公告)号：US6127039A
公开(公告)日：2000-10-03
申请号：US235382
申请日：1999-01-22
CPC分类号： G11B5/735 , G11B5/8404 , Y10S428/90 , Y10T428/31609 , Y10T428/31935
摘要： A magnetic recording medium comprising a non-magnetic base having on at least one side a non-magnetic layer (undercoat) containing electron beam-curable resins which in turn is over-laid with a magnetic layer (topcoat) containing an iron (Fe) based magnetic powder, said magnetic layer having a glass transition temperature (Tg) of at least 65.degree. C. and said non-magnetic layer being an electron beam cured coating that is formed by coating the non-magnetic base with a non-magnetic coating mix containing electron beam curable resins, the yet to be cured coating having a glass transition temperature (Tg) of 30-53.degree. C. and said electron beam curable resins comprising an electron beam curable vinyl chloride based resin having a sulfur-containing polar group and an electron beam curable urethane resin having a phosphorus-containing polar group. Also disclosed is a process for producing the magnetic recording medium, which has good electromagnetic conversion characteristics in a high-frequency range and which can be manufactured at high production rate.
摘要翻译： 一种磁记录介质，包括在至少一个侧面上具有含有电子束固化树脂的非磁性层（底涂层）的非磁性基底，该非磁性层又包含含有铁（Fe）的磁性层（面漆） 所述磁性层的玻璃化转变温度（Tg）至少为65℃，所述非磁性层是通过用非磁性涂层涂覆非磁性基底形成的电子束固化涂层 含有电子束固化树脂的混合物，尚待固化的涂层的玻璃化转变温度（Tg）为30-53℃，所述电子束固化树脂包含具有含硫极性基团的电子束固化氯乙烯基树脂 和具有含磷极性基团的电子束固化性聚氨酯树脂。 还公开了一种制造磁记录介质的方法，其在高频范围内具有良好的电磁转换特性，并且可以以高生产率制造。
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公开(公告)号：US20100052462A1
公开(公告)日：2010-03-04
申请号：US12461882
申请日：2009-08-27
IPC分类号： H02K3/34
CPC分类号： H02K3/345
摘要： Winding guide portions of an insulator are received in slots, respectively, of a core. Each of windings is electrically insulated from the core by a winding guide wall of a corresponding one of the winding guide portions in each of corresponding two of slots of the core. The winding guide wall of at least one of the winding guide portions is configured differently from the winding guide wall of each of the rest of the winding guide portions and includes a radial bottom wall section, which is radially outwardly spaced from a radial bottom wall section of a corresponding one of the slots by a predetermined distance and contacts a corresponding one of the windings.
摘要翻译： 绝缘体的绕线引导部分别被接纳在芯的槽中。 每个绕组通过在芯的对应的两个槽中的每一个中的相应的一个卷绕引导部分的卷绕引导壁与芯电绝缘。 至少一个卷绕引导部分的卷绕导向壁的构造不同于其余卷绕引导部分的卷绕引导壁，并且包括径向底壁部分，该径向底壁部分与径向底壁部分径向向外间隔开， 相应的一个槽中预定的距离并且接触相应的一个绕组。
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公开(公告)号：US08076818B2
公开(公告)日：2011-12-13
申请号：US12461882
申请日：2009-08-27
CPC分类号： H02K3/345
摘要： Winding guide portions of an insulator are received in slots, respectively, of a core. Each of windings is electrically insulated from the core by a winding guide wall of a corresponding one of the winding guide portions in each of corresponding two of slots of the core. The winding guide wall of at least one of the winding guide portions is configured differently from the winding guide wall of each of the rest of the winding guide portions and includes a radial bottom wall section, which is radially outwardly spaced from a radial bottom wall section of a corresponding one of the slots by a predetermined distance and contacts a corresponding one of the windings.
摘要翻译： 绝缘体的绕线引导部分别被接纳在芯的槽中。 每个绕组通过在芯的对应的两个槽中的每一个中的相应的一个卷绕引导部分的卷绕引导壁与芯电绝缘。 至少一个卷绕引导部分的卷绕导向壁的构造不同于其余卷绕引导部分的卷绕引导壁，并且包括径向底壁部分，该径向底壁部分与径向底壁部分径向向外间隔开， 相应的一个槽中预定的距离并且接触相应的一个绕组。
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公开(公告)号：US20070257572A1
公开(公告)日：2007-11-08
申请号：US11664449
申请日：2006-08-02
申请人： Yoshiki Nakano , Akihiko Seki , Yoshitaka Tao , Ryohei Kageyama , Kazushi Sugishima , Yasuhide Ito , Masayuki Kuwano , Toshio Yamamoto , Kazuyuki Izumi
发明人： Yoshiki Nakano , Akihiko Seki , Yoshitaka Tao , Ryohei Kageyama , Kazushi Sugishima , Yasuhide Ito , Masayuki Kuwano , Toshio Yamamoto , Kazuyuki Izumi
IPC分类号： H02K23/08
摘要： An insulator is mounted in an armature core. Coils are wound around teeth of the armature core by way of concentrated winding. A power feeding member, which supplies a current to the coils, includes a connecting portion. A separating portion, which is provided in the insulator, is located in the teeth. The separating portion separates each of the coils to a first portion and a second portion. The connecting portion is electrically connected to the first portion. Accordingly, while preventing damage to the coils, the coils are easily connected to the power feeding member.
摘要翻译： 绝缘体安装在电枢铁心中。 线圈通过集中绕组缠绕在电枢芯的齿周围。 向线圈供给电流的供电部件包括连接部。 设置在绝缘体中的分离部位于齿中。 分离部分将每个线圈分隔成第一部分和第二部分。 连接部分电连接到第一部分。 因此，在防止线圈损坏的同时，线圈容易地与供电部件连接。
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