Magnetic recording medium
    1.
    发明授权
    Magnetic recording medium 失效
    磁记录介质

    公开(公告)号:US5089331A

    公开(公告)日:1992-02-18

    申请号:US421434

    申请日:1989-10-13

    IPC分类号: G11B5/708 G11B5/735

    摘要: A magnetic recording medium composed of a non-magnetic support having thereon at least one magnetic layer containing a ferromagnetic fine powder dispersed in a binder, wherein (a) the magnetic layer further contains at least one of (i) carbon black having a sodium content of at most 100 ppm, (ii) carbon black having a chlorine content of less than 400 ppm, and (iii) an abrasive having a Mohn' hardness of at least 8 and a mean particle size of 0.05 to 0.5 .mu.m and a sodium content of at most 100 ppm; (b) the ferromagnetic fine powder is a magnetic metal powder having a sodium content of at most 200 ppm; and/or (c) the magnetic recording medium further has a back layer provided on the side of the non-magnetic support opposite to the magnetic layer, containing carbon black having a chlorine content of at most 300 ppm dispersed in a binder. The magnetic recording medium has superior storage stability, with remarkably limited dropout increase, head clogging, C S/N decrease and RF output decrease.

    摘要翻译: 一种由非磁性载体组成的磁记录介质,其上具有至少一个含有分散在粘合剂中的铁磁细粉末的磁性层,其中(a)磁性层还包含以下中的至少一种:(i)具有钠含量 至多100ppm,(ii)氯含量小于400ppm的炭黑,和(iii)具有至少8的莫氏硬度和0.05至0.5μm的平均粒度的磨料和钠 含量至多100ppm; (b)铁磁细粉是钠含量在200ppm以下的磁性金属粉末; 和/或(c)磁记录介质还具有设置在与磁性层相对的非磁性载体一侧的背层,该背层含有分散在粘合剂中的氯含量至多为300ppm的碳黑。 磁记录介质具有优良的存储稳定性,显着的压差增加,头堵塞,C / N降低和RF输出减少。

    Magnetic recording medium having a magnetic layer containing
ferromagnetic metal powder, binder, fatty acid ester, and a specified
branched chain fatty acid
    2.
    发明授权
    Magnetic recording medium having a magnetic layer containing ferromagnetic metal powder, binder, fatty acid ester, and a specified branched chain fatty acid 失效
    具有含有铁磁金属粉末,粘合剂,脂肪酸酯和特定支链脂肪酸的磁性层的磁记录介质

    公开(公告)号:US5212019A

    公开(公告)日:1993-05-18

    申请号:US940733

    申请日:1992-09-08

    IPC分类号: G11B5/702 G11B5/71

    摘要: A magnetic recording medium in which the generation of white powder is suppressed, which recording medium maintains an appropriate running tension and exhibits a reduced level of dropouts and head clogging, comprising a non-magnetic support having thereon a magnetic layer, the magnetic layer containing a ferromagnetic powder and a binder, the ferromagnetic powder is a ferromagnetic metal powder and the magnetic layer contains a branched chain fatty acid represented by formula (I):R.sub.2 CH(CH.sub.2).sub.m COOH (I)wherein R represents CH.sub.3 (CH.sub.2).sub.n, n represents an integer of 8 or more, and m represents 0 or 1 in an amount of from 0.5 to 3 parts by weight per 100 parts by weight of said ferromagnetic metal powder.

    摘要翻译: 其中抑制了白色粉末的产生的磁记录介质,该记录介质保持适当的运行张力并且表现出降低的压差和头部堵塞水平,包括其上具有磁性层的非磁性载体,该磁性层含有 铁磁粉末和粘合剂,铁磁性粉末是强磁性金属粉末,磁性层含有由式(I)表示的支链脂肪酸:R2CH(CH2)mCOOH(Ⅰ),其中R表示CH3(CH2)n,n表示 8个以上的整数,m表示0或1,相对于所述铁磁性金属粉末为100重量份,为0.5〜3重量份。

    Magnetic recording medium having a magnetic layer with a specified
surface roughness and which contains ferromagnetic powder, binder, and
an abrasive
    3.
    发明授权
    Magnetic recording medium having a magnetic layer with a specified surface roughness and which contains ferromagnetic powder, binder, and an abrasive 失效
    磁记录介质具有特定表面粗糙度的磁性层,并含有铁磁粉末,粘合剂和研磨剂

    公开(公告)号:US5512350A

    公开(公告)日:1996-04-30

    申请号:US441009

    申请日:1995-05-15

    IPC分类号: G11B5/708 G11B5/84 G11B5/00

    摘要: A magnetic recording medium comprises a magnetic layer containing a ferromagnetic powder, a binder and an abrasive material having a Mohs hardness of 8 or more on a non-magnetic support, wherein the average protrusion height, which represents the length between the central line of the surface roughness of the sectional curve of the magnetic layer and the upper end of the abrasive material existing (i) above the central line of the surface roughness of the magnetic layer and (ii) in the surface layer of the magnetic layer, is 15 nm or less. A process for preparing the magnetic recording medium comprises coating on a non-magnetic support a magnetic layer containing a ferromagnetic powder, a binder and an abrasive material having a Mohs hardness of 8 or more, and then polishing the surface of the magnetic layer with an abrasive tape, wherein as the abrasive tape there is used one containing at least one abrasive material having a higher Mohs hardness than the abrasive material to be incorporated in the magnetic layer.

    摘要翻译: 磁记录介质包括在非磁性载体上含有铁磁粉末,粘结剂和莫氏硬度为8或更高的研磨材料的磁性层,其中平均突出高度代表 磁性层和磁性层的表面粗糙度的中心线上方存在的(i)磁性层的截面曲线的表面粗糙度和(ii)在磁性层的表面层中的表面粗糙度为15nm 或更少。 制备磁记录介质的方法包括在非磁性载体上涂覆含有铁磁粉末,粘合剂和莫氏硬度为8或更高的研磨材料的磁性层,然后用 研磨带,其中作为研磨带,使用含有至少一种摩擦硬度高于被加入磁性层的研磨材料的磨料的磨料。

    Magnetic recording medium
    5.
    发明授权
    Magnetic recording medium 失效
    磁记录介质

    公开(公告)号:US06395400B1

    公开(公告)日:2002-05-28

    申请号:US09351325

    申请日:1999-07-12

    IPC分类号: B32B2708

    摘要: A magnetic recording medium using a biaxially oriented aromatic polyamide film as a nonmagnetic support resulting in hardly any improper windings or edge damages. The magnetic recording medium includes a magnetic layer containing ferromagnetic powders dispersed in a binder formed on the nonmagnetic support, wherein the biaxially oriented aromatic support has a ratio of the loss tangent at a temperature of 40° C. to the loss tangent at a temperature of 100° C. of 0.7 or higher.

    摘要翻译: 使用双轴取向芳族聚酰胺薄膜作为非磁性载体的磁记录介质几乎不产生任何不正确的绕组或边缘损坏。 该磁记录介质包括含有分散在形成在非磁性载体上的粘合剂中的铁磁性粉末的磁性层,其中双轴取向芳族载体在40℃温度下的损耗角正切与在 100℃为0.7以上。

    Magnetic recording medium comprising a non-magnetic layer having inorganic particles of specific size and distribution

    公开(公告)号:US06630256B2

    公开(公告)日:2003-10-07

    申请号:US09919405

    申请日:2001-07-31

    IPC分类号: B32B516

    CPC分类号: G11B5/733

    摘要: Provided is a magnetic recording medium with a total thickness equal to or less than 8 &mgr;m having good electromagnetic characteristics and good repeat running durability in which the dropping of powder onto the running path and tape edge deformation are prevented and a magnetic recording medium with a total thickness equal to or less than 8 &mgr;m having good electromagnetic characteristics, good repeat running durability, and good dimensional stability. A magnetic recording medium having on one surface of a nonmagnetic support a lower layer comprising an inorganic powder and a binder and an upper magnetic layer comprising a ferromagnetic powder and a binder in that order, and having on the other surface thereof a backcoat layer, wherein: said nonmagnetic support comprises inorganic powder particles with a mean primary particle diameter in a range of from 40 to 200 nm; the number of particles of said inorganic powder in the cross-section of said nonmagnetic support is in a range of from 10 to 200/100 &mgr;m2, said nonmagnetic support exhibits a coercivity in a range of from 159 to 239 kA/m; and the overall thickness is equal to or less than 8 &mgr;m. A magnetic recording medium having on one surface of a nonmagnetic support a lower layer comprising an inorganic powder and a binder and an upper magnetic layer comprising a ferromagnetic powder and a binder in that order, and having on the other surface thereof a backcoat layer, wherein: said nonmagnetic support comprises inorganic powder particles with a mean primary particle diameter in a range of from 10 to 200 nm; the number of particles of said inorganic powder in the cross-section of said nonmagnetic support is in the range of from 10 to 200/100 &mgr;m2, the amount of curl d in the direction of width of said magnetic recording medium is equal to or higher than 0.4 mm and equal to or less than 1.0 mm in the direction of protrusion of the magnetic layer at a width of 6.35 mm; and the overall thickness is equal to or less than 8 &mgr;m.

    Image processing apparatus, filter device, methods of controlling same and computer programs therefor
    8.
    发明授权
    Image processing apparatus, filter device, methods of controlling same and computer programs therefor 有权
    图像处理装置,过滤装置,控制方法及其计算机程序

    公开(公告)号:US08554006B2

    公开(公告)日:2013-10-08

    申请号:US12603234

    申请日:2009-10-21

    申请人: Masaki Suzuki

    发明人: Masaki Suzuki

    IPC分类号: G06K9/40 G06K9/36

    CPC分类号: H04N19/625 H04N19/86

    摘要: Provided are an image processing apparatus and method of controlling same for detecting, in pixel units, an edge that exists prior to encoding, thereby protecting an edge that exists prior to encoding and reducing noise produced by encoding. To accomplish this, the image processing apparatus compares a threshold value generated from quantization information of each pixel when decoding is performed, and the absolute values of differences between a pixel of interest and pixel peripherals thereto, detects, in pixel units, an edge that existed prior to encoding, and corrects only noise produced by encoding.

    摘要翻译: 提供了一种图像处理装置和方法,用于以像素为单位检测存在于编码之前的边缘,从而保护编码之前存在的边缘并减少由编码产生的噪声。 为了实现这一点,图像处理装置将进行解码时的每个像素的量化信息生成的阈值与感兴趣的像素之间的差异的绝对值与其像素外围设备进行比较,以像素为单位检测存在的边缘 在编码之前,仅修正由编码产生的噪声。