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    • 13. 发明授权
    • Image forming apparatus
    • 图像形成装置
    • US07016630B2
    • 2006-03-21
    • US10836278
    • 2004-05-03
    • Kazumi YoshizakiKenji OkadoMasashige TamuraNaotaka Ikeda
    • Kazumi YoshizakiKenji OkadoMasashige TamuraNaotaka Ikeda
    • G03G15/08
    • G03G15/0808G03G15/09G03G2215/0177
    • In an image forming apparatus having a powder transport mechanism including a powder container and a powder transport means which rotates relative to the powder container, the powder transport means has the rotation center substantially on the axis of the powder container, and the space between the inner wall surface of the powder container and the powder transport means is sealed with magnetic particles held by a magnetic-filed generation means. The magnetic particles have a specific saturation magnetization σs and a specific value of A×σA where the residual magnetic flux density of the magnetic-field generation means is represented by A in a specific range and the magnetization intencity of the magnetic particles in a magnetic field with the residual magnetic flux density A is represented by σA.
    • 在具有粉末输送机构的图像形成装置中,粉末输送机构包括粉末容器和相对于粉末容器旋转的粉末输送装置,粉末输送装置具有大致在粉末容器的轴线上的旋转中心, 粉末容器的壁表面和粉末输送装置用磁场产生装置保持的磁性颗粒密封。 磁性颗粒具有特定的饱和磁化信号和Axsigma的特定值,其中磁场产生装置的剩余磁通密度由特定范围内的A表示,并且磁场强度 具有剩余磁通密度A的磁场中的磁性颗粒由σA表示。