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    • 8. 发明申请
    • IMAGE FORMING APPARATUS
    • 图像形成装置
    • US20130308965A1
    • 2013-11-21
    • US13982839
    • 2012-03-29
    • Toshikazu TsuchiyaMasafumi MondeHidetoshi HanamotoTsutomu IshidaShinji Hosoya
    • Toshikazu TsuchiyaMasafumi MondeHidetoshi HanamotoTsutomu IshidaShinji Hosoya
    • G03G15/08
    • G03G15/0831G03G15/0856G03G15/086G03G15/0889G03G2215/0888
    • An image forming apparatus includes a rotatable member which is provided on and rotatable about a rotation shaft in a detachably mountable developing unit containing a developer and has flexibility so that it is flexed depending on a resistance of the developer; an electroconductive member to be detected which is provided on the rotatable member; a detecting electrode provided in a neighborhood of an outer wall surface of a bottom of the developing unit; a converting portion for detecting an electrostatic capacity between the member to be detected and the detecting electrode and for converting the electrostatic capacity into an electric signal; a measuring portion for measuring a time duration in which the electric signal converted by the converting portion exceeds a predetermined threshold; and a discriminating portion for discriminating an amount of the developer on the basis of the time duration measured by the measuring portion.
    • 图像形成装置包括可旋转构件,该可旋转构件设置在可旋转的轴上并且可旋转地安装在包含显影剂的可拆卸安装的显影单元中,并且具有柔性,使得其可以根据显影剂的阻力而弯曲; 被设置在可旋转构件上的被检测导电构件; 检测电极,设置在显影单元的底部的外壁表面附近; 转换部分,用于检测待检测部件与检测电极之间的静电电容,并将静电电容转换成电信号; 用于测量由转换部分转换的电信号超过预定阈值的持续时间的测量部分; 以及鉴别部分,用于基于由测量部分测量的持续时间来识别显影剂的量。
    • 9. 发明授权
    • Image forming apparatus
    • 图像形成装置
    • US08971734B2
    • 2015-03-03
    • US13982839
    • 2012-03-29
    • Toshikazu TsuchiyaMasafumi MondeHidetoshi HanamotoTsutomu IshidaShinji Hosoya
    • Toshikazu TsuchiyaMasafumi MondeHidetoshi HanamotoTsutomu IshidaShinji Hosoya
    • G03G15/08
    • G03G15/0831G03G15/0856G03G15/086G03G15/0889G03G2215/0888
    • An image forming apparatus includes a rotatable member which is provided on and rotatable about a rotation shaft in a detachably mountable developing unit containing a developer and has flexibility so that it is flexed depending on a resistance of the developer; an electroconductive member to be detected which is provided on the rotatable member; a detecting electrode provided in a neighborhood of an outer wall surface of a bottom of the developing unit; a converting portion for detecting an electrostatic capacity between the member to be detected and the detecting electrode and for converting the electrostatic capacity into an electric signal; a measuring portion for measuring a time duration in which the electric signal converted by the converting portion exceeds a predetermined threshold; and a discriminating portion for discriminating an amount of the developer on the basis of the time duration measured by the measuring portion.
    • 图像形成装置包括可旋转构件,该可旋转构件设置在可旋转的轴上并且可旋转地安装在包含显影剂的可拆卸安装的显影单元中,并且具有柔性,使得其可以根据显影剂的阻力而弯曲; 被设置在可旋转构件上的被检测导电构件; 检测电极,设置在显影单元的底部的外壁表面附近; 转换部分,用于检测待检测部件与检测电极之间的静电电容,并将静电电容转换成电信号; 用于测量由转换部分转换的电信号超过预定阈值的持续时间的测量部分; 以及鉴别部分,用于基于由测量部分测量的持续时间来识别显影剂的量。