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    • 1. 发明授权
    • Image forming apparatus
    • 图像形成装置
    • US08909081B2
    • 2014-12-09
    • 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。
    • 3. 发明申请
    • IMAGE FORMING APPARATUS AND METHOD OF CONTROLLING THE SAME
    • 图像形成装置及其控制方法
    • US20120051765A1
    • 2012-03-01
    • US13221423
    • 2011-08-30
    • Takahiro KurodaHidetoshi NoguchiKazuyoshi HaraSatoru Shibuya
    • Takahiro KurodaHidetoshi NoguchiKazuyoshi HaraSatoru Shibuya
    • G03G15/16G03G15/00
    • G03G15/1675G03G2215/0132
    • An image forming apparatus includes a contact transfer device, a bias applying device, a transfer current sensor, a leakage current adjustor, and a controller. The contact transfer device is configured to transfer a toner image onto a surface of a sheet conveyed in a predetermined direction. The bias applying device is configured to apply a bias to the contact transfer device. The transfer current sensor is configured to sense a value of a transfer current flowing through the sheet at an image transfer position. The leakage current adjustor is configured to adjust an amount of a leakage current flowing from the contact transfer device along the surface of the sheet. The controller is configured to control the leakage current adjustor to maintain an amount of the transfer current within a reference range based on the value of the transfer current sensed by the transfer current sensor.
    • 图像形成装置包括接触转印装置,偏置施加装置,转印电流传感器,泄漏电流调节器和控制器。 接触传送装置被配置为将调色剂图像转印到沿预定方向传送的片材的表面上。 偏置施加装置被配置为向接触转移装置施加偏压。 转印电流传感器被配置为感测在图像转印位置处流过纸张的转印电流的值。 泄漏电流调节器被配置为调节沿着片材的表面从接触转移装置流出的泄漏电流的量。 控制器被配置为控制泄漏电流调节器,以基于由转印电流传感器感测的转印电流的值将转印电流的量保持在参考范围内。
    • 5. 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。
    • 8. 发明授权
    • Image forming apparatus
    • 图像形成装置
    • US08644723B2
    • 2014-02-04
    • 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。