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    • 1. 发明申请
    • Conductive resin composition, base for photosensitive drum using the composition, and photosensitive drum
    • 导电树脂组合物,使用该组合物的感光鼓底座和感光鼓
    • US20060151751A1
    • 2006-07-13
    • US10540559
    • 2002-12-26
    • Munenori IizukaTakahiro SuzukiKunio Machida
    • Munenori IizukaTakahiro SuzukiKunio Machida
    • H01B1/12
    • H01B1/24C08K11/00C08L67/02
    • An electrically conductive thermoplastic resin composition to which an electrically conductive agent is added, characterized in that a base resin for the resin composition contains a polyester resin. A resinous base-body for a photosensitive drum made of the above-mentioned electrically conductive resin composition and used in electrostatic recording processes including electro-photographic processes and the like. A photosensitive drum which is made up of the above-mentioned base-body and a photosensitive layer formed thereon. An electrically conductive resin composition which keeps a higher dimensional stability particularly under conditions of high temperature and high humidity without degrading mechanical strength, workability, etc., a base-body for a photosensitive drum using the resin composition, and a photosensitive drum using the base-body become obtainable.
    • 一种导电性热塑性树脂组合物,其中加入导电剂,其特征在于用于树脂组合物的基础树脂含有聚酯树脂。 一种用于由上述导电树脂组合物制成的用于感光鼓的树脂基体,用于包括电照相法等的静电记录工艺。 由上述基体和形成在其上的感光层构成的感光鼓。 一种导电树脂组合物,特别是在高温高湿条件下保持较高的尺寸稳定性,而不会降低机械强度,可加工性等,使用该树脂组合物的感光鼓的基体和使用该基底的感光鼓 人可以得到。
    • 10. 发明授权
    • Composition for resin magnet, magnetic member using same and process for producing said magnetic members
    • 用于树脂磁体的组合物,使用其的磁性构件和用于制造所述磁性构件的方法
    • US06402977B1
    • 2002-06-11
    • US09382632
    • 1999-08-25
    • Hajime TamuraYasuro ShiomuraMunenori Iizuka
    • Hajime TamuraYasuro ShiomuraMunenori Iizuka
    • H01F137
    • H01F1/083G03G15/0921
    • There are disclosed a composition for resin magnets which comprises a thermoplastic resin and magnetic powders and which, when determined in a heated molten state, has specific viscosity characteristics characterized in that the almost linear line which is obtained by taking &eegr;R/&eegr;O as ordinate and &ggr; as abscissa has a slope of at most 0.02, preferably at most 0.01 within a specific temperature range in which &eegr;O falls within the range of from 2.0×106 to 1.0×107 dyne/cm2, wherein &eegr;R denotes shear stress (dyne/cm2), &eegr;O denotes yield stress (dyne/cm2) and &ggr; denotes shear rate (S−1); a magnetic member which is produced by the use of the above composition for resin magnets; and a process for efficiently producing the magnetic member from the composition by an extrusion molding in a magnetic field under specific temperature and pressure conditions. The above composition for resin magnets has specific viscosity characteristics, and thereby enables to readily afford a magnetic member having a strong magnetic force such as magnet rollers and magnet pieces. Accordingly, the magnetic member is well suited for use in the field of electrophographic equipment and electrostatic recording equipment such as copying machinery, facsimile machinery and printers.
    • 公开了一种用于树脂磁体的组合物,其包含热塑性树脂和磁性粉末,并且当在加热的熔融状态中确定时,具有特定的粘度特性,其特征在于以etaR / etaO为纵坐标和γ 横轴在etaO为2.0×10 6〜1.0×10 7达因/ cm 2的范围内的斜率为0.02以下,优选为0.01以下,其中η为剪切应力(达因/厘米2),etaO为 屈服应力(dyne / cm2),γ表示剪切速率(S-1); 通过使用上述树脂磁体用组合物制造的磁性部件; 以及通过在特定温度和压力条件下的磁场中的挤出成型从组合物有效地制造磁性构件的方法。 上述用于树脂磁体的组合物具有比粘度特性,从而能够容易地获得具有强磁力的磁性构件,例如磁性辊和磁体片。 因此,磁性构件非常适用于电泳设备和复印机械,传真机械和打印机等静电记录设备领域。