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    Image forming apparatus which back-transfers residual toner from an intermediate transfer member to a photosensitive drum
    1.
    发明授权
    Image forming apparatus which back-transfers residual toner from an intermediate transfer member to a photosensitive drum 失效
    图像形成装置将残留调色剂从中间转印部件反向转印到感光鼓上

    公开(公告)号：US5809373A

    公开(公告)日：1998-09-15

    申请号：US651858

    申请日：1996-05-21

    申请人： Yasuo Yoda ,  Katsuhiko Nishimura ,  Koichi Hiroshima ,  Shinichi Tsukida ,  Toru Kosaka

    发明人： Yasuo Yoda ,  Katsuhiko Nishimura ,  Koichi Hiroshima ,  Shinichi Tsukida ,  Toru Kosaka

    IPC分类号： G03G15/16

    CPC分类号： G03G15/161 ,  G03G15/1605 ,  G03G2215/1652

    摘要： An image forming apparatus has an image bearing member; toner image forming unit for forming a toner image with non-magnetic toner on an image bearing member; intermediate transfer member contactable to the image bearing member and movable along an endless path; primary transfer unit for effecting primary image transfer of the toner image formed on the image bearing member onto the intermediate transfer member at a first transfer position; secondary transfer unit for effecting a secondary image transfer of the toner image from the intermediate transfer member on the transfer material at a second transfer position; and a residual toner charger for charging the residual toner remaining on the intermediate transfer member to a polarity opposite from a regular polarity thereof. After the secondary image transfer, the residual toner remaining on the intermediate transfer member is charged by the residual toner charger to the opposite polarity, and is then passed through the first transfer position during the primary image transfer, so that the residual toner is transferred back to the image bearing member substantially simultaneously with a next primary image transfer, thus removing the residual toner from the intermediate transfer member.

    摘要翻译： 图像形成装置具有图像承载部件; 调色剂图像形成单元，用于在图像承载部件上形成具有非磁性调色剂的调色剂图像; 中间转印部件，其能够与图像承载部件接触并沿着环形路径移动; 一次转印单元，用于在第一转印位置处将形成在图像承载部件上的调色剂图像初次转印到中间转印部件上; 二次转印单元，用于在第二转印位置进行从转印材料上的中间转印部件的调色剂图像的二次图像转印; 以及剩余调色剂充电器，用于将残留在中间转印部件上的剩余调色剂充电到与其正常极性相反的极性。 在二次图像转印之后，残留在中间转印部件上的剩余调色剂由剩余调色剂充电器充电至相反极性，然后在主图像转印期间通过第一转印位置，从而将残留调色剂转印回 在下一次图像转印的同时基本上与图像承载部件相接触，从而从中间转印部件去除残留的调色剂。

    Image forming apparatus having cleaning device for cleaning intermediate transfer member
    2.
    发明授权
    Image forming apparatus having cleaning device for cleaning intermediate transfer member 失效
    具有用于清洁中间转印部件的清洁装置的图像形成装置

    公开(公告)号：US5732310A

    公开(公告)日：1998-03-24

    申请号：US633470

    申请日：1996-04-17

    申请人： Koichi Hiroshima ,  Katsuhiko Nishimura ,  Shinichi Tsukida ,  Toru Kosaka ,  Yasuo Yoda

    发明人： Koichi Hiroshima ,  Katsuhiko Nishimura ,  Shinichi Tsukida ,  Toru Kosaka ,  Yasuo Yoda

    IPC分类号： G03G15/16

    CPC分类号： G03G15/161 ,  G03G15/1605 ,  G03G2215/1652

    摘要： In an image forming apparatus a toner image is transferred onto a transfer material using an intermediate transfer member. The image forming apparatus has an image bearing member; a toner image forming unit for forming a toner image on the image bearing member; an intermediate transfer member movable along an endless path in contact with the image bearing member; a bias voltage applicator for applying a bias voltage to transfer the toner image from the image bearing member onto the intermediate transfer member at a first transfer position of the intermediate transfer member; and an image transfer device for transferring the toner image from the intermediate transfer member onto the transfer material at a second transfer position of the intermediate transfer member, a residual toner charge for charging residual toner remaining on the intermediate transfer member after image transfer therefrom, to a polarity opposite from a regular polarity of the toner to permit the residual toner to transfer back, simultaneously with a next image transfer at the first transfer position, to the image bearing member when the residual toner passes through the first transfer position.

    摘要翻译： 在图像形成装置中，使用中间转印部件将调色剂图像转印到转印材料上。 图像形成装置具有图像承载部件; 调色剂图像形成单元，用于在图像承载部件上形成调色剂图像; 中间转印部件，其沿着与所述图像承载部件接触的环状路径移动; 偏置电压施加器，用于在中间转印部件的第一转印位置处施加偏置电压以将调色剂图像从图像承载部件转印到中间转印部件上; 以及图像转印装置，用于在中间转印部件的第二转印位置处将调色剂图像从中间转印部件转印到转印材料上，剩余调色剂带电量用于在残留在中间转印部件上的剩余调色剂进行图像转印之后， 与调色剂的正常极性相反的极性，以便当剩余调色剂通过第一转印位置时，允许残留调色剂与第一转印位置处的下一次图像转印同时转印回图像承载部件。

    Image forming apparatus having dielectric constant relationship between image bearing member, intermediate transfer member and contact transfer device
    3.
    发明授权
    Image forming apparatus having dielectric constant relationship between image bearing member, intermediate transfer member and contact transfer device 失效
    在图像承载部件，中间转印部件和接触转印装置之间具有介电常数关系的图像形成装置

    公开(公告)号：US5701568A

    公开(公告)日：1997-12-23

    申请号：US705822

    申请日：1996-08-30

    申请人： Koichi Hiroshima ,  Katsuhiko Nishimura ,  Toru Kosaka ,  Yasuo Yoda

    发明人： Koichi Hiroshima ,  Katsuhiko Nishimura ,  Toru Kosaka ,  Yasuo Yoda

    IPC分类号： G03G15/01 ,  G03G15/16

    CPC分类号： G03G15/0131 ,  G03G15/162 ,  G03G2215/0177

    摘要： An image forming apparatus includes a first image-bearing member such as an electrophotographic photosensitive member, an intermediate transfer member for receiving a transferable image formed on the first image-bearing member, and contact transfer device for transferring the transferable image from the intermediate transfer member to a transfer material. The first image-bearing member has a surface layer having a dielectric constant .epsilon..sub.d, the intermediate transfer member has a surface layer having a dielectric constant .epsilon..sub.ITD and the contact transfer device has a surface layer having a dielectric constant .epsilon..sub.tr satisfying a relationship of; .epsilon..sub.d .ltoreq..epsilon..sub.ITD .ltoreq..epsilon..sub.tr. The intermediate transfer member exhibits a volume resistivity of 10.sup.6 -10.sup.10 ohm.cm (at an applied voltage of 1 kV), and the contact transfer device exhibits a volume resistivity of 10.sup.8 -10.sup.15 ohm.cm (at an applied voltage of 1 kV). As a result, it is possible to obtain high transfer efficiencies in both primary and secondary transfer over a wide transfer bias application range.

    摘要翻译： 图像形成装置包括第一图像承载构件，例如电子照相感光构件，用于接收形成在第一图像承载构件上的可转印图像的中间转印构件和用于从中间转印构件转印可转印图像的接触转印装置 转移材料。 第一图像承载构件具有介电常数εd的表面层，中间转印构件具有介电常数εITD的表面层，并且接触转移装置具有满足关系的介电常数εtr的表面层 ; epsilon d = 中间转印部件的体积电阻率为106-1010欧姆·厘米（施加电压为1千伏），接触转移装置的体积电阻率为108-1015欧姆·厘米（施加电压为1千伏） 。 结果，可以在宽的转印偏压施加范围内在一次和二次转印中获得高转印效率。

    Image forming device
    4.
    发明授权
    Image forming device 失效
    图像形成装置

    公开(公告)号：US5264902A

    公开(公告)日：1993-11-23

    申请号：US4676

    申请日：1993-01-14

    申请人： Koichi Suwa ,  Masahiro Goto ,  Takahiro Inoue ,  Koichi Hiroshima ,  Shinichi Tsukida ,  Junichi Kato ,  Hideyuki Yano ,  Manabu Takano

    发明人： Koichi Suwa ,  Masahiro Goto ,  Takahiro Inoue ,  Koichi Hiroshima ,  Shinichi Tsukida ,  Junichi Kato ,  Hideyuki Yano ,  Manabu Takano

    IPC分类号： G03G15/20

    CPC分类号： G03G15/206

    摘要： The image forming device of the present invention relates to an image forming device having a moving member which moves while pressing a recording material against an image carrying member as the means of transferring the image on the image carrying member to the recording material. Further, the image forming device has a pair of moving members for fixing the image by conveying the recording material sandwiched therebetween, of which the moving member on the side not in contact with the unfixed image is a moving member having an elastic material layer and a resin surface layer. Further, the present invention has the surface of the moving member of the fixing member on the side not in contact with the unfixed image which is better mold releasability with that of the moving member of the image forming device.

    摘要翻译： 本发明的图像形成装置涉及一种图像形成装置，其具有移动构件，该移动构件作为将图像承载构件上的图像转印到记录材料的装置而将记录材料压靠在图像承载构件上移动。 此外，图像形成装置具有一对移动构件，用于通过传送夹在其间的记录材料来固定图像，其中与未定影图像不接触的一侧的移动构件是具有弹性材料层的移动构件和 树脂表面层。 此外，本发明的固定构件的移动构件的表面不与未定影图像接触的一侧，其与图像形成装置的移动构件的脱模性更好。

    Image forming apparatus capable of setting fixing temperature corresponding to temperature rising state of heating member
    8.
    发明授权
    Image forming apparatus capable of setting fixing temperature corresponding to temperature rising state of heating member 失效
    能够设定与加热部件的升温状态对应的定影温度的图像形成装置

    公开(公告)号：US5572306A

    公开(公告)日：1996-11-05

    申请号：US480326

    申请日：1995-06-07

    申请人： Masahiro Goto ,  Takahiro Inoue ,  Koichi Hiroshima ,  Koichi Suwa ,  Shinichi Tsukida ,  Manabu Takano

    发明人： Masahiro Goto ,  Takahiro Inoue ,  Koichi Hiroshima ,  Koichi Suwa ,  Shinichi Tsukida ,  Manabu Takano

    IPC分类号： G03G15/20 ,  G05D23/00

    CPC分类号： G03G15/2003 ,  G03G15/2039

    摘要： An image forming apparatus for forming an image on a recording medium, having an image bearing member; an image forming device for forming an image on the image bearing member; a transfer device for transferring the image formed on the image bearing member by the image forming device onto a recording medium; a heat fixing unit for fixing the image transferred to the recording medium by the transfer device onto the recording medium; a power source; and a controller for detecting a temperature increased condition of the heat fixing unit when the power source is turned ON and for determining a temperature adjust temperature of the heat fixing unit at a fixing operation in accordance with the detected result.

    摘要翻译： 一种图像形成装置，用于在具有图像承载部件的记录介质上形成图像; 图像形成装置，用于在图像承载部件上形成图像; 转印装置，用于将由图像形成装置形成在图像承载部件上的图像转印到记录介质上; 热定影单元，用于将通过转印装置传送到记录介质的图像定影到记录介质上; 电源; 以及控制器，用于当电源接通时检测热定影单元的升温状态，并根据检测结果确定定影单元的温度调节温度。