Image forming apparatus having transfer material bearing member
    1.
    发明授权
    Image forming apparatus having transfer material bearing member 失效
    图像形成装置具有转印材料承载部件

    公开(公告)号:US5539507A

    公开(公告)日:1996-07-23

    申请号:US167141

    申请日:1993-12-16

    IPC分类号: G03G15/01 G03G15/16 G03G15/14

    摘要: The present invention provides an image forming apparatus with an image bearing member for bearing an image, and a transfer material bearing member rotatable for bearing a transfer material. The image on the image bearing member is transferred onto the transfer material born by the transfer material bearing member at a transfer position, and a voltage is applied to the transfer material bearing member during the transferring of the transfer material. When a distance between the transfer position and a separation position where the transfer material is separated from the transfer material bearing member along a peripheral surface of the transfer material bearing member in a rotational direction of the transfer material bearing member is L, a whole circumferential length of the transfer material bearing member is L1 and a maximum length of the transfer material usable in the image forming apparatus in the rotational direction of the transfer material bearing member is Hmax, a relation L.ltoreq.(L1-Hmax) is satisfied.

    摘要翻译: 本发明提供一种图像形成装置,具有用于承载图像的图像承载部件和可转动地承载转印材料的转印材料轴承部件。 图像承载部件上的图像在转印位置被转印到由转印材料承载部件承载的转印材料上,并且在转印材料的转印期间将电压施加到转印材料承载部件。 当转印位置与转印材料沿着转印材料承载部件的周面沿转印材料承载部件的旋转方向与转印材料承载部件分离的分离位置之间的距离为L时,整个周长 转印材料承载部件的转印材料的最大长度为Lmax,转印材料承载部件的旋转方向上可用于转印材料的转印材料的最大长度为Hmax,满足关系式L <=(L1-Hmax)。

    Image forming apparatus with select relation among distances in
recording material conveyance path
    2.
    发明授权
    Image forming apparatus with select relation among distances in recording material conveyance path 失效
    在记录材料传送路径中的距离之间具有选择关系的图像形成装置

    公开(公告)号:US5508796A

    公开(公告)日:1996-04-16

    申请号:US215710

    申请日:1994-03-22

    CPC分类号: G03G15/16

    摘要: The present invention provides an image forming apparatus with an image bearing member capable of rotating while bearing a toner image thereon, a transfer device for transferring the toner image from the image bearing member to a recording material at a transfer position, recording material bearing member capable of rotating while bearing the recording material thereon and adapted to convey the recording material to the transfer position, a pair of rotary members arranged at an upstream side of the recording material bearing member in a recording material conveying direction and adapted to pinch and convey the recording material, and a separation device for separating the recording material from the recording material bearing member at a separation position. When a length from the pair of rotary members to the separation position along a recording material conveying path is L1, a length of the recording material in the recording material conveying direction is L3, a length from the transfer position to the separation position is L4 and a sheet-to-sheet distance between two adjacent recording materials is La, the following relations are satisfied:L1

    摘要翻译: 本发明提供了一种图像形成装置,其具有能够在其上承载调色剂图像的同时转动的图像承载部件,用于将调色剂图像从图像承载部件转印到转印位置处的记录材料的转印装置,记录材料承载部件 在记录材料上承载记录材料并适于将记录材料传送到转印位置的一对旋转构件;一对旋转构件,其设置在记录材料承载构件的记录材料输送方向的上游侧并适于夹持和传送记录 材料和用于在记录材料承载部件处于分离位置处分离记录材料的分离装置。 当沿着记录材料传送路径从一对转动件到分离位置的长度为L1时,记录材料输送方向上的记录材料的长度为L3,从转印位置到分离位置的长度为L4, 两个相邻记录材料之间的片对距离为La,满足以下关系:L1 <(L3 + La),L4

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

    公开(公告)号:US6097919A

    公开(公告)日:2000-08-01

    申请号:US218087

    申请日:1998-12-22

    IPC分类号: G03G15/01 G03G15/16

    CPC分类号: G03G15/0131 G03G2215/0177

    摘要: In an image forming apparatus according to the present invention, the toner images of the plural colors on the intermediate transfer member are electrostatically transferred to a transfer material, and the image forming charges the toner image of a color, among the toner images of the plural colors formed on the intermediate transfer member, different from the last color in such a manner that the charge amount per unit weight of the toner image of the different color becomes 0.5 to 1.5 times of the charge amount per unit weight of the toner image of the last color, after the formation of the toner image of the last color on the intermediate transfer member and prior to the transfer of the toner images of the plural colors on the intermediate transfer member to the transfer material.

    摘要翻译: 在根据本发明的图像形成装置中,中间转印部件上的多种颜色的调色剂图像被静电转印到转印材料上,并且图像形成对多色调色剂图像中的色调剂图像进行充电 在中间转印部件上形成的颜色不同于最后的颜色,使得不同颜色的调色剂图像的每单位重量的电荷量成为每单位重量的调色剂图像的电荷量的0.5至1.5倍 在中间转印部件上形成最后颜色的调色剂图像之后,并且将中间转印部件上的多种调色剂图像转印到转印材料之前。

    Image forming apparatus having intermediary transfer member
    6.
    发明授权
    Image forming apparatus having intermediary transfer member 失效
    具有中间转印部件的图像形成装置

    公开(公告)号:US5953572A

    公开(公告)日:1999-09-14

    申请号:US905830

    申请日:1997-08-04

    IPC分类号: G03G15/00 G03G15/01 G03G15/16

    摘要: An image forming apparatus includes an image bearing member for bearing an image; an intermediary transfer member onto which an image is transferred from the image bearing member at a first transfer position and from which the image thus transferred is transferred onto a transfer material at a second transfer position; a contact member provided at an image bearing side of the intermediary transfer member, the contact member being capable of forming a nip between the intermediary transfer member; a supporting member for supporting the intermediary transfer member at a position opposite from the nip; a sum of a resistance value of the contact member and a resistance value of the supporting member is not more than 1/10 of a resistance value of the intermediary transfer member; and the contact member and the supporting member are contacted to the intermediary transfer member, and when no transfer material is present at the nip, a voltage is detected while a predetermined current is applied between the contact member and the supporting member through the intermediary transfer member.

    摘要翻译: 图像形成装置包括用于承载图像的图像承载部件; 中间转印部件,在第一转印位置从图像承载部件转印图像,并且将这样转印的图像从该转印部件转印到第二转印位置的转印材料上; 设置在所述中间转印部件的图像承载侧的接触部件,所述接触部件能够在所述中间转印部件之间形成辊隙; 支撑构件,用于在与辊隙相对的位置处支撑中间转印构件; 接触构件的电阻值和支撑构件的电阻值的和不大于中间转印构件的电阻值的+ E,fra 1/10 + EE; 并且接触构件和支撑构件与中间转印构件接触,并且当在辊隙处不存在转印材料时,检测到电压,同时通过中间转印构件在接触构件和支撑构件之间施加预定电流 。

    System for reducing a surface potential of an image bearing member in an
image forming apparatus
    7.
    发明授权
    System for reducing a surface potential of an image bearing member in an image forming apparatus 失效
    用于降低图像形成装置中的图像承载部件的表面电位的系统

    公开(公告)号:US5402218A

    公开(公告)日:1995-03-28

    申请号:US114926

    申请日:1993-09-02

    CPC分类号: G03G15/167

    摘要: An image forming apparatus includes an image bearing member, a latent image forming device for forming a latent image having a high potential portion and a low potential portion before a toner image is formed on the image bearing member, a transfer material bearing member for bearing and for conveying a transfer material to a transfer station where the toner image on the image bearing member is transferred onto the transfer material, and a potential applying device for applying a predetermined potential which is lower than the potential of the high potential portion of a predetermined area of the image bearing member. According to the invention, when a portion of the transfer material bearing member is in the transfer station before transfer of the toner image has begun, a portion of the predetermined area is in the transfer station.

    摘要翻译: 图像形成装置包括图像承载部件,用于在图像承载部件上形成调色剂图像之前形成具有高电位部分和低电位部分的潜像的潜像形成装置,用于轴承的转印材料承载部件 用于将转印材料输送到图像承载部件上的调色剂图像转印到转印材料上的转印站;以及施加比预定区域的高电位部分的电位低的预定电位的电位施加装置 的图像承载部件。 根据本发明,当调色剂图像转印开始之前转印材料承载元件的一部分在转印站中时,预定区域的一部分在转印站中。

    Image forming apparatus
    8.
    发明授权
    Image forming apparatus 失效
    图像形成装置

    公开(公告)号:US5946538A

    公开(公告)日:1999-08-31

    申请号:US960737

    申请日:1997-10-30

    CPC分类号: G03G15/0131 G03G2215/0177

    摘要: An image forming apparatus includes an image bearing member for carrying toner images of different colors; a rotatable intermediary transfer member to which the toner images are superimposedly transferred from said image bearing member onto said intermediary transfer member at a first transfer position, wherein the toner images are then transferred all together from said intermediary transfer member onto the transfer material at a second transfer position; wherein said intermediary transfer member includes an elastic layer having a thickness of 0.5-2 (mm), a coating layer, on said elastic layer, having a volume resistivity which is larger than that of said elastic layer, and said intermediary transfer member satisfies:T.ltoreq..tau..ltoreq.500 (sec)where .tau. (sec) is time required for a potential V of said intermediary transfer member at one second after a surface of said intermediary transfer member charged to a predetermined potential rotates at a rotational speed of 10 (cm/s) to become V/e (e: base of natural logarithm, e=2.71828 . . . ); and T (sec) is a rotation period of said intermediary transfer member when the toner images on said image bearing member are sequentially and superimposedly transferred onto said intermediary transfer member at the first transfer position.

    摘要翻译: 图像形成装置包括用于承载不同颜色的调色剂图像的图像承载部件; 可旋转的中间转印部件,其中调色剂图像在第一转印位置处从所述图像承载部件重叠地转印到所述中间转印部件上,其中所述调色剂图像然后在所述中间转印部件上一起从所述中间转印部件转印到转印材料上 转移位置 其特征在于,所述中间转印部件包括在所述弹性层上具有0.5-2(mm)厚度的弹性层,所述弹性层的体积电阻率大于所述弹性层的体积电阻率,所述中间转印部件满足: 其中tau(sec)是所述中间转印部件的电位V在被加载到预定电位的所述中间转印部件的表面以转速旋转后的一秒所需的时间 为10(cm / s)变为V / e(e:自然对数的基数,e = 2.71828 ...); 并且当所述图像承载部件上的调色剂图像在第一转印位置依次重叠地转印到所述中间转印部件上时,T(秒)是所述中间转印部件的旋转周期。