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    • 3. 发明申请
    • IMAGE FORMING APPARATUS
    • 图像形成装置
    • US20120308251A1
    • 2012-12-06
    • US13486183
    • 2012-06-01
    • Kazuyoshi HaraHidetoshi NoguchiSatoru ShibuyaTakahiro Kuroda
    • Kazuyoshi HaraHidetoshi NoguchiSatoru ShibuyaTakahiro Kuroda
    • G03G15/16
    • G03G15/1605G03G15/1675
    • An image forming apparatus having: a toner image carrier; a transfer member; a transfer voltage applying device which applies a bias voltage to the transfer member; a voltage controller which performs constant voltage control on the transfer voltage applying device; a transfer contribution current detecting device; an antistatic member for removing static electricity from the record medium after transfer of a toner image; and an antistatic voltage applying device which applies an AC voltage to the antistatic member. The transfer contribution current detecting device measures current values during a current detection time, which corresponds to an integral multiple of a period of the AC voltage applied to the antistatic member, and detects a transfer contribution current value from the measured values, and the voltage controller controls the bias voltage applied to the transfer member based on the transfer contribution current value.
    • 一种图像形成装置,具有:调色剂图像载体; 转移构件; 转印电压施加装置,其向所述转印部件施加偏置电压; 对转印电压施加装置进行恒定电压控制的电压控制器; 转移贡献电流检测装置; 用于在转印调色剂图像之后从记录介质去除静电的抗静电构件; 以及向抗静电部件施加交流电压的抗静电电压施加装置。 转移贡献电流检测装置测量电流检测时间内的电流值,该电流值对应于施加到抗静电部件的AC电压的周期的整数倍,并根据测量值检测转印贡献电流值,并且电压控制器 基于转印贡献电流值控制施加到转印部件的偏置电压。
    • 4. 发明申请
    • IMAGE FORMING APPARATUS
    • 图像形成装置
    • US20120195617A1
    • 2012-08-02
    • US13357326
    • 2012-01-24
    • Satoru SHIBUYAHidetoshi NOGUCHIKazuyoshi HARATakahiro KURODA
    • Satoru SHIBUYAHidetoshi NOGUCHIKazuyoshi HARATakahiro KURODA
    • G03G15/00
    • G03G15/161
    • An image forming apparatus is for transferring a toner image on an image carrier onto a transfer medium, and thermally fixing the toner image by a fixing device, and comprises a cleaner removing residual toner on the image carrier. The apparatus: acquires information relating to a distribution of a density of the residual toner at each position within a section on the image carrier at an end of an image forming job, the section extending from the transfer position to immediately before a cleaning position; determines, based on the information, whether or not the density of the residual toner at the transfer position exceeds a corresponding threshold density pertaining to occurrence of fusion of the residual toner; and causes, if determining negatively, the drive unit to stop when the image forming job is completed and the residual toner at the transfer position reaches a predetermined position within the section.
    • 图像形成装置用于将图像载体上的调色剂图像转印到转印介质上,并通过定影装置热调色剂图像,并且包括清洁剂去除图像载体上的残留调色剂。 所述装置:在图像形成作业的结束处,从所述转印位置延伸到紧接在清洁位置之前,获取与所述图像载体上的部分内部的每个位置处的残留调色剂的浓度分布有关的信息; 基于该信息确定转印位置处的残留调色剂的浓度是否超过与残留调色剂的熔融发生有关的对应阈值密度; 并且如果确定为否定,则当图像形成作业完成并且传送位置处的残留调色剂到达该部分内的预定位置时驱动单元停止。
    • 5. 发明申请
    • IMAGE FORMING APPARATUS
    • 图像形成装置
    • US20110229176A1
    • 2011-09-22
    • US13050037
    • 2011-03-17
    • Hidetoshi NoguchiSatoru ShibuyaKazuyoshi Hara
    • Hidetoshi NoguchiSatoru ShibuyaKazuyoshi Hara
    • G03G15/16
    • G03G15/1665G03G15/0131G03G15/161G03G15/6532G03G15/6535G03G2215/004G03G2215/0132
    • An image forming apparatus has an image carrier that carries a toner image; a transfer member that is opposed to the image carrier, a transfer voltage being applied to the transfer member so that the toner image is transferred from the image carrier to a print medium passing between the transfer member and the image carrier; a first voltage application device that applies the transfer voltage to the transfer member; a separation member to which a separation voltage is applied so that the print medium is separated from the image carrier; a second voltage application device that applies the separation voltage to the separation member; a sensing device that senses an image density of the toner image; and a control section that controls a magnitude of the separation voltage based upon the image density of the toner image.
    • 图像形成装置具有承载调色剂图像的图像载体; 与图像载体相对的转印构件,将转印电压施加到转印构件,使得调色剂图像从图像载体转印到通过转印构件和图像载体之间的打印介质; 将转印电压施加到转印部件的第一电压施加装置; 分隔构件,其上施加有分离电压,使得打印介质与图像载体分离; 将分离电压施加到分离部件的第二电压施加装置; 感测装置,其感测调色剂图像的图像浓度; 以及控制部分,其基于调色剂图像的图像浓度来控制分离电压的大小。