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    Transfer roller with a resistance determined in accordance with its peripheral speed
    3.
    发明授权
    Transfer roller with a resistance determined in accordance with its peripheral speed 失效
    转印辊的电阻根据其圆周速度确定

    公开(公告)号：US5223900A

    公开(公告)日：1993-06-29

    申请号：US801887

    申请日：1991-12-03

    申请人： Takayasu Yuminamochi ,  Koichi Tanigawa ,  Akihiko Takeuchi ,  Koichi Hiroshima

    发明人： Takayasu Yuminamochi ,  Koichi Tanigawa ,  Akihiko Takeuchi ,  Koichi Hiroshima

    IPC分类号： G03G15/16

    CPC分类号： G03G15/1685

    摘要： An image forming apparatus includes a movable image bearing member; a transfer device cooperative with the image bearing member to form a nip, through which a transfer material is passed to electrostatically transfer an image from the image bearing member onto the transfer material; where the resistance R range providing proper image transfer is determined in accordance with the equation:-9.16.times.10.sup.3 .times.v+11.68-0.65.ltoreq.log.sub.10 (R.times.L).ltoreq.-9.16.times.10.sup.3 .times.v+11.68+0.65where V (mm/sec) is movement speed of the image bearing member (v.gtoreq.40), R (ohm) is a resistance of the transfer device when a voltage of 3 KV is applied between the image bearing member and the transfer device, and L (mm) is a length of the nip measured in a direction of a generating line of the image bearing member.

    摘要翻译： 图像形成装置包括可动图像承载部件; 转印装置与图像承载部件协作以形成辊隙，转印材料通过该辊隙通过，以将图像从图像承载部件静电转印到转印材料上; 其中根据以下等式确定提供适当图像转印的电阻R范围：-9.16×103×v + 11.68-0.65 = 40）时，当在图像承载部件和转印装置之间施加3KV的电压时，R（ohm）是转印装置的电阻，L（mm）为 沿着图像承载部件的生成线的方向测量压区的长度。

    Image forming apparatus
    5.
    发明授权
    Image forming apparatus 失效
    图像形成装置

    公开(公告)号：US5253022A

    公开(公告)日：1993-10-12

    申请号：US524024

    申请日：1990-05-15

    申请人： Akihiko Takeuchi ,  Takayasu Yuminamochi ,  Hiroto Hasegawa ,  Koichi Tanigawa ,  Yasumasa Ohtsuka ,  Hiroki Kisu

    发明人： Akihiko Takeuchi ,  Takayasu Yuminamochi ,  Hiroto Hasegawa ,  Koichi Tanigawa ,  Yasumasa Ohtsuka ,  Hiroki Kisu

    IPC分类号： G03G15/16

    CPC分类号： G03G15/1675 ,  G03G2215/1652

    摘要： An image forming apparatus includes a movable image bearing member; an image forming device for forming a toner image on the image bearing member; an image transfer device for transferring the toner image onto a transfer material at a transfer position, the transfer device including a rotatable member contactable to such a side of the transfer material as is opposite from a side contactable to the image bearing member and an electric field forming device for forming an electric field between the image bearing member and the rotatable member; wherein the electric field forming device forms a first electric field effective to transfer the toner from the rotatable member to the image bearing member and a second electric field which is opposite in a direction from the first electric field during a period in which the transfer material is absent at the transfer position, wherein each of the first and second electric fields is formed at least for a period required for the entire surface of the rotatable member passes through the transfer position.

    摘要翻译： 图像形成装置包括可动图像承载部件; 图像形成装置，用于在图像承载部件上形成调色剂图像; 用于将调色剂图像转印到转印位置的转印材料上的图像转印装置，所述转印装置包括可转印部件，该可转动部件可与转印材料的这种侧面相接触，所述转动部件与图像承载部件可接触的一侧相反， 形成装置，用于在所述图像承载部件和所述可转动部件之间形成电场; 其中所述电场形成装置形成有效地将所述调色剂从所述可旋转构件传递到所述图像承载部件的第一电场和在所述转印材料为所述转印材料的期间内从所述第一电场的方向相反的第二电场 在转移位置不存在，其中第一和第二电场中的每一个至少形成至少可旋转构件的整个表面所需的时间段通过转移位置。