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78 条记录 (耗时 0.029 秒)

    Manufacturing process for liquid developer
    42.
    发明授权
    Manufacturing process for liquid developer 失效
    液体显影剂的制造工艺

    公开(公告)号：US4019993A

    公开(公告)日：1977-04-26

    申请号：US191078

    申请日：1971-10-20

    申请人： Yasuo Tamai ,  Sadao Osawa ,  Satoru Honjo

    发明人： Yasuo Tamai ,  Sadao Osawa ,  Satoru Honjo

    IPC分类号： C09C1/00 ,  C09C1/56 ,  G03G9/12 ,  G03G9/125 ,  G03G9/00

    CPC分类号： G03G9/125 ,  G03G9/12

    摘要： A manufacturing process for liquid developer intended for developing the electrostatic latent image characterized by polymerizing one or more kinds of addition-polymerizable monomers with a mixture containing pigment and polymerization initiator to thereby obtain a graft polymer of the monomers and the pigments and treating the resultant polymerized product with a polar solvent of 12 or higher in dielectric constant, and then dispersing the component of the resultant product insoluble in the solvent in the carrier liquid of the liquid developer with high electric resistance whereby (a) the electric resistance of the developer, (b) the uniformity of the charge of the toner in the developer, and (c) the length of charge stability are enhanced because of the treating step.

    摘要翻译： 用于显影静电潜像的液体显影剂的制造方法，其特征在于，将含有颜料和聚合引发剂的混合物聚合一种或多种可加聚单体，从而得到单体和颜料的接枝聚合物，并处理所得聚合的 极性溶剂的介电常数为12以上的产物，然后以高电阻将不溶于溶剂的所得产物的成分分散在液体显影剂的载液中，由此（a）显影剂的电阻（ b）显影剂中调色剂的电荷的均匀性，和（c）由于处理步骤，电荷稳定性的长度增加。

    Magnetic recording medium
    44.
    发明授权
    Magnetic recording medium 失效
    磁记录介质

    公开(公告)号：US4857388A

    公开(公告)日：1989-08-15

    申请号：US110296

    申请日：1987-10-20

    申请人： Hiroshi Ogawa ,  Yasuo Tamai

    发明人： Hiroshi Ogawa ,  Yasuo Tamai

    IPC分类号： G11B5/706 ,  C09D5/23 ,  C09D127/04 ,  C09D127/06 ,  C09D175/00 ,  C09D175/04 ,  G11B5/716

    CPC分类号： G11B5/716 ,  Y10S428/90 ,  Y10T428/24942 ,  Y10T428/265

    摘要： A magnetic recording medium comprises a nonmagnetic support and a magnetic recording layer provided on the support which comprises two layers including a first magnetic recording layer and a second magnetic recording layer. Each of the two magnetic recording layers contains a ferromagnetic powder having a coercive force of not less than 500 Oe dispersed therein. The first magnetic recording layer is provided on the support has a Young's modulus of 500 to 1,000 kg/mm.sup.2 ; and the second magnetic recording layer provided on the first magnetic recording layer has a Young's modulus of not less than 1,300 kg/mm.sup.2 ; and the magnetic recording layers as a whole show a Young's modulus of not less than 900 kg/mm.sup.2.

    摘要翻译： 磁记录介质包括非磁性载体和设置在载体上的磁记录层，其包括包括第一磁记录层和第二磁记录层的两层。 两个磁记录层中的每一个包含其中分散有不小于500Oe的矫顽力的铁磁粉末。 第一磁记录层设置在载体上，杨氏模量为500-1,000kg / mm2; 并且设置在第一磁记录层上的第二磁记录层的杨氏模量不小于1300kg / mm2; 整个磁记录层的杨氏模量不低于900kg / mm2。

    Magnetic recording medium
    45.
    发明授权
    Magnetic recording medium 失效
    磁记录介质

    公开(公告)号：US4728558A

    公开(公告)日：1988-03-01

    申请号：US890342

    申请日：1986-07-29

    申请人： Toshio Ono ,  Yasuo Tamai ,  Chiaki Mizuno ,  Hiroshi Ogawa ,  Shinji Saito

    发明人： Toshio Ono ,  Yasuo Tamai ,  Chiaki Mizuno ,  Hiroshi Ogawa ,  Shinji Saito

    IPC分类号： C09D5/23 ,  C09D127/04 ,  C09D127/06 ,  C09D175/06 ,  G11B5/70 ,  G11B5/73 ,  G11B5/78

    CPC分类号： G11B5/70 ,  G11B5/7305 ,  Y10S428/90 ,  Y10T428/24355 ,  Y10T428/265

    摘要： A magnetic recording medium such as an audio-tape or a video-tape comprising a flexible support and a magnetic recording layer provided on one surface of said support, which is characterized in that the total of the thickness of said magnetic recording layer (dM) and the thickness of said support (dB), namely dM plus dB, is not larger than 14 .mu.m; the ratio of the thickness of said magnetic recording layer (dM) to the thickness of said support (dB), namely dM/dB, is in the range of 0.6-1.0; and said magnetic recording medium has F-3 tensile strength in the range of 6.0-8.5 kg/mm.sup.2.

    摘要翻译： 一种磁记录介质，例如音频带或录像带，包括设置在所述支撑体的一个表面上的柔性支撑和磁记录层，其特征在于，所述磁记录层（dM）的厚度总和 并且所述载体的厚度（dB）即dM加dB不大于14μm; 所述磁记录层（dM）的厚度与所述支架的厚度的比（dB）即dM / dB在0.6-1.0的范围内; 并且所述磁记录介质的F-3拉伸强度在6.0-8.5kg / mm2的范围内。

    Magnetic recording medium
    46.
    发明授权
    Magnetic recording medium 失效
    磁记录介质

    公开(公告)号：US4649081A

    公开(公告)日：1987-03-10

    申请号：US787776

    申请日：1985-10-15

    申请人： Hiroshi Ogawa ,  Shinji Saito ,  Chiaki Mizuno ,  Yasuo Tamai

    发明人： Hiroshi Ogawa ,  Shinji Saito ,  Chiaki Mizuno ,  Yasuo Tamai

    IPC分类号： G11B5/708 ,  C09D5/23 ,  C09D7/12 ,  G11B5/71 ,  G11B5/73

    CPC分类号： G11B5/71 ,  Y10S428/90 ,  Y10T428/31663

    摘要： A magnetic recording medium such as an audio-tape or a video-tape comprising a nonmagnetic support and a magnetic recording layer provided on said support, said magnetic recording layer comprising a ferromagnetic powder dispersed in a binder, which is characterized in that said magnetic recording layer comprises at least one modified silicon compound having molecular weight of less than 3,000 and at least one modified silicon compound having molecular weight of not less than 3,000.

    摘要翻译： 一种诸如音频带的磁记录介质或包括设置在所述支撑件上的非磁性支撑和磁记录层的录像带，所述磁记录层包括分散在粘合剂中的铁磁性粉末，其特征在于所述磁记录 层包含分子量小于3,000的至少一种改性硅化合物和至少一种分子量不小于3,000的改性硅化合物。

    Magnetic recording medium
    49.
    发明授权
    Magnetic recording medium 失效
    磁记录介质

    公开(公告)号：US4201809A

    公开(公告)日：1980-05-06

    申请号：US925694

    申请日：1978-07-18

    申请人： Hiroshi Ogawa ,  Yasuo Tamai

    发明人： Hiroshi Ogawa ,  Yasuo Tamai

    IPC分类号： C09D5/23 ,  C09D7/12 ,  G11B5/71 ,  H01F10/02

    CPC分类号： G11B5/71 ,  Y10S428/90 ,  Y10T428/266 ,  Y10T428/31504 ,  Y10T428/31717 ,  Y10T428/31786 ,  Y10T428/31938

    摘要： This invention relates to a magnetic recording medium having on a non-magnetic support a magnetic layer comprising a ferromagnetic powder dispersed in a binder, in which the magnetic layer contains a compound represented by the following general formula (I), ##STR1## wherein R represents a residual radical of trimethylolethane, trimethylolpropane or pentaerythritol, R' represents a residual radical of a fatty acid having at least 5 carbon atoms and n represents an integer of 2 to 4.

    摘要翻译： 本发明涉及一种在非磁性载体上具有包含分散在粘合剂中的铁磁性粉末的磁性层的磁记录介质，其中磁性层含有由以下通式（I）表示的化合物，其中I ）其中R表示三羟甲基乙烷，三羟甲基丙烷或季戊四醇的残基，R'表示具有至少5个碳原子的脂肪酸的残基，n表示2至4的整数。

    Magnetic recording and reproducing apparatus
    50.
    发明授权
    Magnetic recording and reproducing apparatus 失效
    磁记录和再现设备

    公开(公告)号：US4135218A

    公开(公告)日：1979-01-16

    申请号：US687821

    申请日：1976-05-19

    申请人： Matsuaki Nakamura ,  Tatsuji Kitamoto ,  Yasuo Tamai ,  Koshu Kurokawa

    发明人： Matsuaki Nakamura ,  Tatsuji Kitamoto ,  Yasuo Tamai ,  Koshu Kurokawa

    IPC分类号： G11B5/48 ,  G11B5/53 ,  G11B5/55 ,  G11B5/14 ,  G11B5/12

    CPC分类号： G11B5/531 ,  G11B5/488 ,  G11B5/5521

    摘要： A magnetic recording and reproducing apparatus provided with a magnetic head device comprising a supporting means having a recording magnetic head made of an alloy system magnetic material and a reproducing magnetic head made of a ferrite system magnetic material. The recording and reproducing heads are fixed relative to one another thereby eliminating the need for completely separate head mechanisms and for complex mechanisms to reliably interchange the positions of the two heads relative to the recording medium.

    摘要翻译： 一种具有磁头装置的磁记录和再现装置，包括具有由合金系磁性材料制成的记录磁头的支撑装置和由铁氧体系磁性材料制成的再现磁头。 记录和再现头相对固定，从而不需要完全分离的头部机构，并且用于复杂的机构可靠地将两个头部相对于记录介质的位置交换。