Magnetic powder and magnetic toner
    135.
    发明公开
    Magnetic powder and magnetic toner 失效
    Magnetpuder und magnetischer墨粉。

    公开(公告)号:EP0566790A1

    公开(公告)日:1993-10-27

    申请号:EP92303640.4

    申请日:1992-04-23

    申请人: TODA KOGYO CORP.

    IPC分类号: H01F1/11

    摘要: A specific magnetic particle powder is described, which is included in magnetic toners used for magnetic image character recognition (MICR). The magnetic particle powder comprises magnetite particles and has a residual magnetization of 12 to 20 emu/g, an Fe²⁺ content of 18.5 to 22.5 % by weight, a surface deposited with Si or Al oxide or a mixture thereof and a specific surface area of 3.5 to 9.5 m²/g. The magnetic particle powder used as one component of a magnetic toner enables the formation of fine accurate images and the exact detection of the image.

    摘要翻译: 描述了特定的磁性颗粒粉末,其被包括在用于磁图像字符识别(MICR)的磁性调色剂中。 磁性颗粒粉末包含磁铁矿颗粒,剩余磁化强度为12至20emu / g,Fe 2+含量为18.5至22.5重量%,沉积有Si或Al氧化物的表面或其混合物, 比表面积为3.5〜9.5m 2 / g。 用作磁性调色剂的一个组分的磁性颗粒粉末能够形成精细的精确图像和精确的图像检测。

    Damping material
    136.
    发明公开
    Damping material 失效
    Dämpfungsmaterial。

    公开(公告)号:EP0545625A1

    公开(公告)日:1993-06-09

    申请号:EP92310789.0

    申请日:1992-11-25

    IPC分类号: C08L31/04 C08L95/00 C08K3/00

    CPC分类号: C08K7/00 C08K3/013 C08L57/02

    摘要: A damping material comprising:

    (a) a binder composed of (i) an ethylene-vinyl acetate copolymer containing 30 to 65 wt% vinyl acetate units and (ii) a petroleum resin containing an aromatic petroleum resin as the main component thereof, the weight ratio of the ethylene-vinyl acetate copolymer to the petroleum resin being from 100:160 to 100:330; and
    (b) 30 to 180 parts by weight, per 100 parts by weight of said binder, of a filler composed of (i') a scaly powder and (ii') from 0 to less than 50 parts by weight, per 100 parts by weight of said binder, of a granular powder, a fibrous material, or a mixture thereof.

    摘要翻译: 一种阻尼材料,包括:(a)由(i)含有30-65重量%乙酸乙烯酯单元的乙烯 - 乙酸乙烯酯共聚物和(ii)含有芳族石油树脂作为其主要成分的石油树脂组成的粘合剂, 乙烯 - 乙酸乙烯酯共聚物与石油树脂的比例为100:160至100:330; 和(b)每100重量份所述粘合剂30至180重量份,由(i')鳞片状粉末和(ii')每100份0至小于50重量份的填料组成的填料 的所述粘合剂,颗粒状粉末,纤维材料或其混合物。 ñ