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    • 1. 发明授权
    • Magnetic toner for developing electrostatic images, process for producing it, image forming method and process cartridge
    • 用于显影静电图像的磁性调色剂,其制造方法,成像方法和处理盒
    • US06238834B1
    • 2001-05-29
    • US09084993
    • 1998-05-28
    • Osamu TamuraKoichi TomiyamaShunji SuzukiYoshihiro Ogawa
    • Osamu TamuraKoichi TomiyamaShunji SuzukiYoshihiro Ogawa
    • G03G9083
    • G03G9/0819G03G9/081G03G9/0821G03G9/0835G03G9/09725
    • A magnetic toner for developing an electrostatic image is comprised of magnetic toner particles containing at least a binder resin, a magnetic fine powder and a wax. The magnetic toner particles have a weight-average particle diameter of from 3.5 to 6.5 &mgr;m, and a dispersion prepared by dispersing 15 mg of the magnetic toner particles in 19 ml of an aqueous solution of ethyl alcohol and water in a volume ratio of 27:73 has an absorbance of from 0.2 to 0.7 at a wavelength of 600 nm. A process for producig such a magnetic toner is charcterized by, especially, the melt-kneading step carried out under the following conditions: 2.2×103≦E/&egr;≦2.0×104 E=k&ohgr;2T, &egr;=F/(&pgr;D2L) wherein &ohgr; represents a screw rotational speed (m/min), T represents a preset temperature (K), F represents a feed rate (kg/min) of a mixture of a binder resin, a magnetic fine powder and a wax, D represents a cylinder inner diameter (m), L represents a screw effective length (m), &pgr; represents the circular constant, and k represents (D0/D)2, where D0 is 0.1 m.
    • 用于显影静电图像的磁性调色剂由至少含有粘合剂树脂,磁性细粉和蜡的磁性调色剂颗粒组成。 磁性调色剂颗粒的重均粒径为3.5至6.5μm,并且通过将15mg磁性调色剂颗粒分散在19ml乙醇和水的水溶液中而制得的分散体积比为27: 73在波长600nm处的吸光度为0.2〜0.7。制造这种磁性调色剂的方法特别是在以下条件下进行的熔融捏合步骤:其中ω表示螺杆转速( m / min),T表示预设温度(K),F表示粘合剂树脂,磁性细粉末和蜡的混合物的进料速度(kg / min),D表示气缸内径(m) L表示螺杆有效长度(m),pi表示圆形常数,k表示(D0 / D)2,其中D0为0.1μm。
    • 2. 发明授权
    • Magnetic toner, apparatus unit and image forming method
    • 磁性调色剂,设备单元和成像方法
    • US5858593A
    • 1999-01-12
    • US902323
    • 1997-07-29
    • Osamu TamuraKoichi TomiyamaNobuyuki OkuboShunji SuzukiYoshihiro OgawaKeita Nozawa
    • Osamu TamuraKoichi TomiyamaNobuyuki OkuboShunji SuzukiYoshihiro OgawaKeita Nozawa
    • G03G9/08G03G9/083G03G13/09G03G15/08G03G15/09
    • G03G9/0835G03G13/09G03G9/0819G03G9/0821G03G9/0833
    • Disclosed are a magnetic toner for developing an electrostatic latent image comprising magnetic toner particles containing a binder resin of 100 parts by weight and a magnetic substance of 20 to 150 parts by weight, and an apparatus unit and an image forming method for employing the magnetic toner. A frictional electrification property is such that the absolute value of the frictional electrification amount relative to an iron powder of 250 mesh-pass to 350 mesh-on is 25 to 40 mc/kg. Assuming that for particle distribution of the magnetic toner a weight-average particle diameter (D.sub.4) for the magnetic toner is X (.mu.m) and that a count % in a count distribution of magnetic toner particles that have a diameter of 3.17 .mu.m or smaller is Y (%), expressions (1) and (2) are satisfied:-5X+35.ltoreq.Y.ltoreq.-25X+180 (1)3.5.ltoreq.X.ltoreq.6.5 (2).Sphericity (.psi.) of particles is equal to or greater than 0.80 and a product (.sigma..sub.r .times.H.sub.c) of remanence �.sigma..sub.r (Am.sup.2 /kg)! and coercive force (H.sub.c (kA/m)! of the magnetic substance in a magnetic field of 795.8 kA/m (10 k oersted) is 10 to 56 (kA.sup.2 m/kg).
    • 公开了一种用于显影静电潜像的磁性调色剂,其包含含有100重量份的粘合剂树脂的磁性调色剂颗粒和20至150重量份的磁性物质,以及用于使用磁性调色剂的装置单元和图像形成方法 。 摩擦带电特性使得相对于250目通过至350目的铁粉的摩擦带电量的绝对值为25〜40mc / kg。 假设对于磁性调色剂的颗粒分布,磁性调色剂的重均粒径(D4)为X(μm),并且磁性调色剂颗粒的计数分布的计数%为直径为3.17μm,或 较小的是Y(%),表达式(1)和(2)满足:-5X + 35
    • 7. 发明申请
    • Nd-Fe-B Magnetic with Modified Grain Boundary and Process for Producing the Same
    • 具有改性晶粒边界的Nd-Fe-B磁性及其制备方法
    • US20080006345A1
    • 2008-01-10
    • US11793272
    • 2005-12-14
    • Kenichi MachidaShunji Suzuki
    • Kenichi MachidaShunji Suzuki
    • H01F1/01
    • H01F1/0577C22C29/14H01F41/0293
    • [Problem] In known methods, an improvement of the coercive force is realized by allowing the Dy metal or the like to present selectively in crystal grain boundary portions of a sintered magnet. However, since these are based on a physical film formation method, e.g., sputtering, through the use of a vacuum vessel, there is a mass productivity problem in the case where large amounts of magnet is treated. Furthermore, there is a magnet cost problem from the viewpoint that, for example, an expensive, high-purity Dy metal or the like must be used as a raw material for film formation. [Solving Means] A method for modifying grain boundaries of a Nd—Fe—B base magnet characterized by including the step of allowing an M metal component to diffuse and penetrate from a surface of a Nd—Fe—B base sintered magnet body having a Nd-rich crystal grain boundary phase surrounding principal Nd2Fe14B crystals to the grain boundary phase through a reduction treatment of a fluoride, an oxide, or a chloride of an M metal element (where M is Pr, Dy, Tb, or Ho).
    • [问题]在已知的方法中,通过使Dy金属等选择性地存在于烧结磁体的晶界部中,可以实现矫顽力的提高。 然而,由于这些基于物理成膜方法,例如溅射,通过使用真空容器,在处理大量磁体的情况下存在批量生产率问题。 此外,从例如必须使用昂贵,高纯度的Dy金属等作为成膜原料的观点出现磁铁成本问题。 [解决方案]一种用于改变Nd-Fe-B基础磁体的晶界的方法,其特征在于包括以下步骤:允许M金属组分从具有 通过氟化物,氧化物或氯化物的还原处理将包围主要Nd 2 Fe 14 B的富Nd晶界相结晶到晶界相 M金属元素(其中M为Pr,Dy,Tb或Ho)。
    • 8. 发明申请
    • Apparatus for controlling stiffness of a vehicle body
    • 用于控制车身刚度的装置
    • US20050088011A1
    • 2005-04-28
    • US10962655
    • 2004-10-13
    • Shunji SuzukiYuta Urushiyama
    • Shunji SuzukiYuta Urushiyama
    • B62D25/20B60R19/18B60R19/26B60R19/34B62D21/15
    • B60R19/26B60R19/34
    • An apparatus for controlling stiffness of a vehicle body includes a slide member, a base member, a deformable member and an actuator. The slide member is disposed parallel to a direction of impact force acting on a first end of the slide member. The base member, which is disposed at a second end of the slide member, has a slit into which the slide member moves. The deformable member is disposed at the first end of the slide member. Both ends of the deformable member are connected to the base member and a cross section of the deformable member is substantially U-shaped. The actuator executes one of permitting the slide member to move into the slit and inhibiting the slide member from moving into the slit at a collision.
    • 用于控制车身刚度的装置包括滑动构件,基座构件,可变形构件和致动器。 滑动构件平行于作用在滑动构件的第一端部的冲击力的方向设置。 设置在滑动构件的第二端的基部构件具有滑动构件移动到其中的狭缝。 可变形构件设置在滑动构件的第一端。 可变形构件的两端连接到基座构件,并且可变形构件的横截面基本上为U形。 执行器执行允许滑动构件移动到狭缝中并且在碰撞时阻止滑动构件移动到狭缝中的一个。