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15 条记录 (耗时 0.013 秒)

    Carrier for two-component type developer
    3.
    发明公开
    Carrier for two-component type developer 失效
    TrägerfürZweikomponentenentwickler。

    公开(公告)号：EP0431830A1

    公开(公告)日：1991-06-12

    申请号：EP90312945.0

    申请日：1990-11-28

    申请人： MITA INDUSTRIAL CO., LTD.

    发明人： Komata, Hiroshi ,  Tsuji, Nobuyuki ,  Kimura, Takahiko ,  Asada, Hidenori ,  Yamada, Shigeki

    IPC分类号： G03G9/10 ,  G03G9/107

    CPC分类号： G03G9/107 ,  G03G9/10

    摘要： Disclosed is a ferrite carrier for a two-component type developer, characterized in that the internal pore ratio, based on the area, of carrier particles is adjusted to 3 to 30%, the electric resistance is adjusted within a certain range, and the developing electric field dependency indicating the change ratio of the electric resistance of the particles caused when the electric field is changed is controlled within a specific range. This carrier has a good durability, and when a two-component developer comprising this ferrite carrier is used, there can be obtained a high-quality image in which a solid image area and a fine line image area are clearly reproduced.

    摘要翻译： 公开了一种用于双组分型显影剂的铁氧体载体，其特征在于，将载体颗粒的面积的内部孔隙率调节至3至30％，将电阻调节到一定范围内，并且显影 指示电场变化时引起的粒子的电阻的变化率的电场依赖性被控制在特定范围内。 该载体具有良好的耐久性，并且当使用包含该铁氧体载体的双组分显影剂时，可以获得清晰再现固体图像区域和细线图像区域的高质量图像。

    Carrier for developer
    5.
    发明公开
    Carrier for developer 失效
    TrägerfürEntwickler。

    公开(公告)号：EP0447153A1

    公开(公告)日：1991-09-18

    申请号：EP91302001.2

    申请日：1991-03-11

    申请人： MITA INDUSTRIAL CO., LTD.

    发明人： Komata, Hiroshi ,  Tsuji, Nobuyuki ,  Kimura, Takahiko ,  Asada, Hidenori ,  Yamada, Shigeki

    IPC分类号： G03G9/107

    CPC分类号： G03G9/107

    摘要： Disclosed is a carrier for a two-component developer, which comprises specific sintered ferrite particles obtained by modifying ferrite customarily used for a carrier, and which can provide a copied image having a high quality, especially an excellent gradation, while maintaining a high durability of the carrier. This carrier comprises sintered ferrite particles having an internal pore ratio, based on the area, of 3 to 20% in an amount of 50 to 80% by weight based on the entire carrier, and the developing voltage dependency of the electric resistance of the carrier is reduced and controlled to an appropriate level.

    摘要翻译： 公开了一种双组分显影剂的载体，其包含通过改变常规用于载体的铁素体获得的特定的烧结铁氧体颗粒，并且可以提供具有高质量，特别是优异的等级的复印图像，同时保持高的耐久性 承运人 这种载体包括基于整个载体的基于面积的内孔比为3〜20％的烧结铁氧体颗粒，其量为50〜80重量％，载体的电阻的显影电压依赖性 减少并控制到适当的水平。

    Toner for electrophotography and process for preparation thereof
    10.
    发明公开
    Toner for electrophotography and process for preparation thereof 失效
    EntwicklerfürElektrophotographie und Verfahren zu dessen Herstellung。

    公开(公告)号：EP0376717A2

    公开(公告)日：1990-07-04

    申请号：EP89313641.6

    申请日：1989-12-28

    申请人： MITA INDUSTRIAL CO., LTD.

    发明人： Ogami, Shunsuke ,  Yamaguchi, Atsushi ,  Asada, Hidenori ,  Fujii, Masanori ,  Komata, Hiroshi ,  Umeda, Kiminori ,  Kimura, Takahiko

    IPC分类号： G03G9/087 ,  G03G9/097

    CPC分类号： G03G9/097 ,  G03G9/08728 ,  G03G9/091 ,  G03G9/09783

    摘要： Disclosed is a toner for the electrophotography, which comprises as a main component a styrene/acrylic copolymer having at least two molecular weight distribution peaks, the molecular weight (Mw) of the peak on the lowest molecular weight side being lower than 13000, wherein the toner contains a charge controlling agent dispersed therein at a concentration of at least 0.3% by weight and the charge controlling agent has such a particle size distribution that the area ratio of particles having a particle size larger than 2.5 µm is at least 80% based on the section of the toner.
    If this toner is used, the fixing-possible temperature can be broadened while increasing the fixing ratio without reduction of the performances of the toner.

    摘要翻译： 公开了用于电子照相的调色剂，其包含具有至少两个分子量分布峰的苯乙烯/丙烯酸共聚物作为主要成分，最低分子量侧的峰的分子量（Mw）低于13000，其中 调色剂含有浓度为至少0.3重量％的电荷控制剂，并且电荷控制剂具有这样的粒度分布，使得粒径大于2.5μm的颗粒的面积比基于至少80％ 在墨粉部分。 如果使用这种调色剂，则可以在不降低调色剂性能的同时提高定影率的同时，扩大定影可能的温度。