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    IMAGE FORMING APPARATUS
    2.
    发明申请
    IMAGE FORMING APPARATUS 有权
    图像形成装置

    公开(公告)号：US20160161888A1

    公开(公告)日：2016-06-09

    申请号：US14962062

    申请日：2015-12-08

    申请人： Yuuji WADA ,  Naohiro KUMAGAI ,  Seiichi KOGURE ,  Junpei FUJITA ,  Kazuki YOGOSAWA ,  Kenji SUGIURA ,  Takehide MIZUTANI ,  Tatsuya OHSUGI ,  Hiroyoshi HAGA ,  Hirokazu ISHll

    发明人： Yuuji WADA ,  Naohiro KUMAGAI ,  Seiichi KOGURE ,  Junpei FUJITA ,  Kazuki YOGOSAWA ,  Kenji SUGIURA ,  Takehide MIZUTANI ,  Tatsuya OHSUGI ,  Hiroyoshi HAGA ,  Hirokazu ISHll

    IPC分类号： G03G15/16

    CPC分类号： G03G21/0005 ,  G03G15/1665 ,  G03G15/1675

    摘要： An image forming apparatus includes a belt-shaped image bearer; a transfer device disposed opposing to the image bearer; an opposed device disposed opposing to the transfer device; and a transfer bias power source. The image bearer is disposed along an outer circumferential surface of the transfer device at at least one of an upstream side and a downstream side of the transfer portion in a direction of conveyance of the recording medium. The transfer bias power source cyclically alternates the transfer bias applied to the transfer portion, between a transfer directional bias in a transfer direction to transfer the toner image from the image bearer onto the recording medium and a reverse directional bias in a reverse direction of the transfer direction. The transfer bias power source applies the reverse directional bias during a time period longer than 50% of one cycle of the applied transfer bias in the one cycle.

    摘要翻译： 图像形成装置包括带状图像载体; 与所述图像载体相对设置的传送装置; 与传送装置相对设置的相对设备; 和转印偏压电源。 图像承载体在转印部分的上游侧和下游侧中的至少一个沿着记录介质的输送方向沿着转印装置的外周表面设置。 转印偏压电源周期性地交替施加到转印部分的转印偏压之间，在转印方向上的转印方向偏压之间，以将调色剂图像从图像载体转印到记录介质上，并且转印反转方向上的反向偏置 方向。 转移偏置电源在一个周期内的施加的转移偏压的一个周期的50％的时间段内施加反向偏置。

    IMAGE FORMING APPARATUS, IMAGE FORMING SYSTEM, AND TRANSFER METHOD
    4.
    发明申请
    IMAGE FORMING APPARATUS, IMAGE FORMING SYSTEM, AND TRANSFER METHOD 审中-公开
    图像形成装置，图像形成系统和传送方法

    公开(公告)号：US20140341605A1

    公开(公告)日：2014-11-20

    申请号：US14327169

    申请日：2014-07-09

    申请人： Tomokazu TAKEUCHI ,  Hiroyoshi HAGA ,  Yasunobu SHIMIZU ,  Hiromi OGIYAMA ,  Kenji SENGOKU ,  Junpei FUJITA

    发明人： Tomokazu TAKEUCHI ,  Hiroyoshi HAGA ,  Yasunobu SHIMIZU ,  Hiromi OGIYAMA ,  Kenji SENGOKU ,  Junpei FUJITA

    IPC分类号： G03G15/00 ,  G03G15/16

    CPC分类号： G03G15/80 ,  G03G15/1665 ,  G03G2215/0129

    摘要： An image forming apparatus includes a transfer unit configured to transfer a toner image onto a recording medium; a power supply unit configured to output one of an alternating-current-based voltage including at least an alternating-current voltage and a direct-current voltage to the transfer unit; and a power supply control unit configured to cause the power supply unit to start switching to the alternating-current-based voltage a first time after the power supply unit stops outputting the direct-current voltage in the case that output of the power supply unit is switched to the alternating-current-based voltage, and cause the power supply unit to start switching to the direct-current voltage a second time after the power supply unit stops outputting the alternating-current-based voltage in the case that output of the power supply unit is switched to the direct-current voltage. The second time is longer than the first time.

    摘要翻译： 图像形成装置包括被配置为将调色剂图像转印到记录介质上的转印单元; 电源单元，被配置为向所述传送单元输出至少包括交流电压和直流电压的交流电压中的一个; 以及电源控制单元，被配置为在所述电源单元的输出为所述情况下，在所述供电单元停止输出所述直流电压之后，使所述电源单元开始切换到所述交流电压 切换到基于交流电压，并且在电力输出端的情况下，在电源单元停止输出基于交流电压之后，使电源单元再次开始切换到直流电压 供电单元切换到直流电压。 第二次比第一次还要长。

    IMAGE FORMING APPARATUS
    5.
    发明申请
    IMAGE FORMING APPARATUS 有权
    图像形成装置

    公开(公告)号：US20100221029A1

    公开(公告)日：2010-09-02

    申请号：US12708983

    申请日：2010-02-19

    申请人： Ryuichi MINBU ,  Kenji SENGOKU ,  Junpei FUJITA ,  Osamu ICHIHASHI

    发明人： Ryuichi MINBU ,  Kenji SENGOKU ,  Junpei FUJITA ,  Osamu ICHIHASHI

    IPC分类号： G03G15/16

    CPC分类号： G03G15/0131 ,  G03G15/161

    摘要： To provide an image forming apparatus capable of increasing the life of a rotating cam while preventing the occurrence of a shock jitter and transfer failure. The image forming apparatus is configured to execute a forced movement process for rotating the rotating cam to forcibly move a secondary transfer roller against a biasing force of a bias coil spring at a pre-entry timing prior to the entry of the front edge of a recording sheet into a secondary transfer position, and a pressure intensifying process for rotating the rotating cam to increase transfer pressure at a timing immediately after the entry of the front edge of the recording sheet into the secondary transfer position. As the forced movement process, the image forming apparatus executes, alternately, a first forced movement process for normally driving and rotating the rotating cam, and a second forced movement process for inversely driving and rotating the rotating cam, at a predetermined timing.

    摘要翻译： 提供能够在防止发生震动抖动和转印失败的同时延长旋转凸轮的寿命的图像形成装置。 图像形成装置被配置为执行强制移动处理，用于使旋转凸轮旋转，以抵抗偏置螺旋弹簧的偏置力强迫移动二次转印辊，在进入记录的前边缘之前的预录入时刻 以及用于使旋转凸轮旋转以在紧接在记录纸的前边缘进入二次转印位置之后的定时增加转印压力的增压过程。 作为强制移动处理，图像形成装置交替地执行用于正常地驱动和旋转旋转凸轮的第一强制移动处理和用于在预定定时反转驱动和旋转旋转凸轮的第二强制移动处理。

    IMAGE FORMING APPARATUS
    8.
    发明申请
    IMAGE FORMING APPARATUS 有权
    图像形成装置

    公开(公告)号：US20160334739A1

    公开(公告)日：2016-11-17

    申请号：US15143806

    申请日：2016-05-02

    申请人： Tatsuya OHSUGI ,  Kenji SUGIURA ,  Hirokazu ISHII ,  Hiroyoshi HAGA ,  Yuuji WADA ,  Takehide MIZUTANI ,  Naoto KOCHI ,  Naohiro KUMAGAI ,  Seiichi KOGURE ,  Junpei FUJITA ,  Kazuki YOGOSAWA

    发明人： Tatsuya OHSUGI ,  Kenji SUGIURA ,  Hirokazu ISHII ,  Hiroyoshi HAGA ,  Yuuji WADA ,  Takehide MIZUTANI ,  Naoto KOCHI ,  Naohiro KUMAGAI ,  Seiichi KOGURE ,  Junpei FUJITA ,  Kazuki YOGOSAWA

    IPC分类号： G03G15/16

    CPC分类号： G03G15/1675 ,  G03G15/1605 ,  G03G2215/0129

    摘要： An image forming apparatus, including an image bearer configured to bear a toner image; a transfer device disposed opposing to the image bearer; and a transfer bias power source. The transfer bias power source is configured to output a transfer bias to transfer the toner image onto a recording medium. The transfer bias is a superimposed bias that cyclically alternates between a transfer-directional bias to transfer the toner image from the image bearer onto the recording medium and an opposite-directional bias in an opposite direction of the transfer direction. A ratio of a time period of application of the opposite-directional bias to a total time period of one cycle of the output transfer bias is greater than 50%. The transfer bias power source changes a value of a direct current voltage in the superimposed bias according to a linear velocity of the image bearer.

    摘要翻译： 一种图像形成装置，包括构造成承载调色剂图像的图像载体; 与所述图像载体相对设置的传送装置; 和转印偏压电源。 转印偏压电源被配置为输出转印偏压以将调色剂图像转印到记录介质上。 转印偏压是在将调色剂图像从图像载体转印到记录介质上的转印方向偏置和在转印方向的相反方向上的相反方向的偏压之间循环地交替的叠加偏压。 反方向偏压的施加时间与输出转印偏压的一个周期的总时间周期的比率大于50％。 转印偏压电源根据图像承载的线速度改变叠加偏压中的直流电压的值。

    IMAGE FORMING APPARATUS
    9.
    发明申请
    IMAGE FORMING APPARATUS 有权
    图像形成装置

    公开(公告)号：US20160334738A1

    公开(公告)日：2016-11-17

    申请号：US15142424

    申请日：2016-04-29

    申请人： Naoto KOCHI ,  Kenji SUGIURA ,  Hirokazu ISHll ,  Hiroyoshi HAGA ,  Yuuji WADA ,  Takehide MIZUTANI ,  Naohiro KUMAGAI ,  Junpei FUJITA ,  Tatsuya OHSUGI ,  Kazuki YOGOSAWA

    发明人： Naoto KOCHI ,  Kenji SUGIURA ,  Hirokazu ISHll ,  Hiroyoshi HAGA ,  Yuuji WADA ,  Takehide MIZUTANI ,  Naohiro KUMAGAI ,  Junpei FUJITA ,  Tatsuya OHSUGI ,  Kazuki YOGOSAWA

    IPC分类号： G03G15/16

    CPC分类号： G03G15/163 ,  G03G15/1605 ,  G03G15/1675 ,  G03G2215/0129

    摘要： An image forming apparatus includes an image bearer, a transfer device contacting the image bearer to form a transfer portion, a transfer bias power source, and a controller. A ratio of a time period of application of the opposite-directional bias to a total time period of one cycle of the AC component of the superimposed bias is greater than 50%. A ratio of a value of the DC component of the superimposed bias output within a region ranging from a leading end of the recording medium to a predetermined length to a value of the DC component of the superimposed bias output outside the region is greater than a ratio of a value of the AC component of the superimposed bias output within the region to a value of the AC component of the superimposed bias output outside the region.

    摘要翻译： 图像形成装置包括图像载体，与图像载体接触以形成转印部分的转印装置，转印偏压电源和控制器。 反向偏置的施加时间周期与叠加偏压的交流分量的一个周期的总时间周期的比率大于50％。 在从记录介质的前端到预定长度的范围内的叠加偏压输出的直流分量的值与区域外的叠加偏压输出的直流分量的值之比大于比率 将该区域内的叠加偏压输出的AC分量的值设定为该区域外的叠加偏压输出的交流分量的值。