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    Image forming apparatus including first and second image forming devices and first and second belt units
    1.
    发明授权
    Image forming apparatus including first and second image forming devices and first and second belt units 失效
    图像形成装置包括第一和第二图像形成装置以及第一和第二带单元

    公开(公告)号：US08260179B2

    公开(公告)日：2012-09-04

    申请号：US12791554

    申请日：2010-06-01

    申请人： Yohei Miura ,  Kouji Amanai ,  Joh Ebara ,  Toshiyuki Uchida ,  Narumi Sugita ,  Keisuke Sugiyama ,  Kenji Tomita ,  Kimiharu Yamazaki

    发明人： Yohei Miura ,  Kouji Amanai ,  Joh Ebara ,  Toshiyuki Uchida ,  Narumi Sugita ,  Keisuke Sugiyama ,  Kenji Tomita ,  Kimiharu Yamazaki

    IPC分类号： G03G15/01

    CPC分类号： G03G15/0131 ,  G03G15/0178 ,  G03G15/167

    摘要： An image forming apparatus includes a primary transfer device that primarily transfers a first image from a first image bearer onto a first belt unit at a primary transfer position, a secondary transfer device that secondarily transfers the first image from the first belt unit onto a printing medium at a secondary transfer position, and a direct transfer device that directly transfers a second image from a second image bearer onto the printing medium at a direct transfer position. A second belt unit is rotatably suspended by plural second rollers and carries and conveys the printing medium through the direct transfer position and the secondary transfer position. An interval between the direct transfer position and the secondary transfer position is prescribed natural number times of a circumference of one of the plural second rollers, which fluctuates a velocity of the second belt unit.

    摘要翻译： 图像形成装置包括：一次传送装置，其主要将第一图像从第一图像载体传送到第一传送位置处的第一传送带单元;二次传送装置，其将第一图像从第一传送带单元传送到打印介质上 以及直接传送装置，其将第二图像从第二图像载体直接传送到在直接传送位置处的打印介质上。 第二带单元由多个第二辊可旋转地悬挂，并通过直接转印位置和二次转印位置运送并传送打印介质。 直接转印位置和二次转印位置之间的间隔是多个第二辊之一的周长的规定的自然次数，其使第二带单元的速度波动。

    IMAGE FORMING APPARATUS CAPABLE OF FORMING HIGH QUALITY SUPERIMPOSED IMAGE
    2.
    发明申请
    IMAGE FORMING APPARATUS CAPABLE OF FORMING HIGH QUALITY SUPERIMPOSED IMAGE 失效
    形成高质量超图像的图像形成装置

    公开(公告)号：US20100310281A1

    公开(公告)日：2010-12-09

    申请号：US12791554

    申请日：2010-06-01

    申请人： Yohei MIURA ,  Kouji Amanai ,  Joh Ebara ,  Toshiyuki Uchida ,  Narumi Sugita ,  Keisuke Sugiyama ,  Kenji Tomita ,  Kimiharu Yamazaki

    发明人： Yohei MIURA ,  Kouji Amanai ,  Joh Ebara ,  Toshiyuki Uchida ,  Narumi Sugita ,  Keisuke Sugiyama ,  Kenji Tomita ,  Kimiharu Yamazaki

    IPC分类号： G03G15/01

    CPC分类号： G03G15/0131 ,  G03G15/0178 ,  G03G15/167

    摘要： An image forming apparatus includes a primary transfer device that primarily transfers a first image from a first image bearer onto a first belt unit at a primary transfer position, a secondary transfer device that secondarily transfers the first image from the first belt unit onto a printing medium at a secondary transfer position, and a direct transfer device that directly transfers a second image from a second image bearer onto the printing medium at a direct transfer position.A second belt unit is rotatably suspended by plural second rollers and carries and conveys the printing medium through the direct transfer position and the secondary transfer position. An interval between the direct transfer position and the secondary transfer position is prescribed natural number times of a circumference of one of the plural second rollers, which fluctuates a velocity of the second belt unit.

    摘要翻译： 图像形成装置包括：一次传送装置，其主要将第一图像从第一图像载体传送到第一传送位置处的第一传送带单元;二次传送装置，其将第一图像从第一传送带单元传送到打印介质上 以及直接传送装置，其将第二图像从第二图像载体直接传送到在直接传送位置处的打印介质上。 第二带单元由多个第二辊可旋转地悬挂，并通过直接转印位置和二次转印位置运送并传送打印介质。 直接转印位置和二次转印位置之间的间隔是多个第二辊之一的周长的规定的自然次数，其使第二带单元的速度波动。

    Drive transmission device and image forming apparatus including same
    10.
    发明授权
    Drive transmission device and image forming apparatus including same 有权

    公开(公告)号：US10054896B2

    公开(公告)日：2018-08-21

    申请号：US15181854

    申请日：2016-06-14

    申请人： Hiroaki Takagi ,  Kimiharu Yamazaki ,  Naoyuki Suido ,  Shogo Sakamoto

    发明人： Hiroaki Takagi ,  Kimiharu Yamazaki ,  Naoyuki Suido ,  Shogo Sakamoto

    IPC分类号： G03G15/00

    CPC分类号： G03G15/757 ,  G03G21/1647 ,  G03G21/186

    摘要： A drive transmission device includes a rotation shaft, a drive transmitter attached to the rotation shaft to slide in an axial direction and including an engaging portion extending in the axial direction, and a coil spring to bias the drive transmitter to one side in the axial direction, and a shaft-side drive transmitter disposed on the rotation shaft. The coil spring includes a sparse portion and a dense portion. The shaft-side drive transmitter engages the engaging portion to prevent the drive transmitter from disengaging from the rotation shaft. The coil spring and the engaging portion satisfy C>A−B where A represents a length of the coil spring in a state in which the shaft-side drive transmitter retains the drive transmitter, B represents a compressed height of the coil spring, and C represents a length of the coil spring in the axial direction.