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    Device for electrostatically developing a latent image on an image carrier
    1.
    发明授权
    Device for electrostatically developing a latent image on an image carrier 失效
    用于在图像载体上静电显影潜像的装置

    公开(公告)号：US5666625A

    公开(公告)日：1997-09-09

    申请号：US560977

    申请日：1995-11-20

    申请人： Satoru Komatsubara ,  Kazuhiro Yuasa ,  Shuichi Endoh ,  Iwao Matsumae ,  Yoshiaki Tanaka ,  Hiroshi Hosokawa ,  Mugijiro Uno ,  Hiroshi Saitoh ,  Eiji Takenaka ,  Toshihiro Sugiyama ,  Tetsuo Yamanaka ,  Eisaku Murakami

    发明人： Satoru Komatsubara ,  Kazuhiro Yuasa ,  Shuichi Endoh ,  Iwao Matsumae ,  Yoshiaki Tanaka ,  Hiroshi Hosokawa ,  Mugijiro Uno ,  Hiroshi Saitoh ,  Eiji Takenaka ,  Toshihiro Sugiyama ,  Tetsuo Yamanaka ,  Eisaku Murakami

    IPC分类号： G03G15/09 ,  G03G9/08 ,  G03G9/097 ,  G03G13/08 ,  G03G15/06 ,  G03G15/08

    CPC分类号： G03G9/09791 ,  G03G13/08 ,  G03G15/0808 ,  G03G9/0819

    摘要： In an image forming apparatus, a developing device has a first developer carrier for depositing a developer thereon, a regulating member for regulating the amount of the developer deposited on the first developer carrier, and a second developer carrier having an elastic surface, and contacting the first developer carrier while biting into it by a predetermined amount. The developer is provided with a preselected degree of fluidity. Hence, even when the same portion of the surface of the second developer carrier runs a plurality of times past a position where the two developer carriers contact each other without any developer being fed from the second developer carrier to an image carrier, the first developer carrier can surely strip the developer from the second developer carrier. As a result, a developer on which a predetermined amount of charge is deposited is transferred from the first developer carrier to the second developer carrier. This successfully protects images from defects. Particularly, when the developer has a zinc stearate content of greater than 0.1 wt %, it is possible to prevent the developer from melting and adhering to a member which regulates the developer.

    摘要翻译： 在图像形成装置中，显影装置具有用于在其上沉积显影剂的第一显影剂载体，用于调节沉积在第一显影剂载体上的显影剂的量的调节构件和具有弹性表面的第二显影剂载体， 第一显影剂载体同时咬入预定量。 显影剂具有预选的流动性。 因此，即使当第二显影剂载体的表面的相同部分多次经过两个显影剂载体彼此接触的位置，而没有将任何显影剂从第二显影剂载体供给到图像载体时，第一显影剂载体 可以肯定地从第二个开发商运营商剥离显影剂。 结果，其上沉积有预定量的电荷的显影剂从第一显影剂载体转移到第二显影剂载体。 这成功地保护图像免受缺陷。 特别是，当显影剂的硬脂酸锌含量大于0.1重量％时，可以防止显影剂熔化并附着在调节显影剂的部件上。

    Developing device having seals between a toner transport roller and the toner hopper which prevent toner leakage and scattering
    2.
    发明授权
    Developing device having seals between a toner transport roller and the toner hopper which prevent toner leakage and scattering 失效
    在调色剂输送辊和调色剂料斗之间具有防止调色剂泄漏和散射的密封件的显影装置

    公开(公告)号：US5625440A

    公开(公告)日：1997-04-29

    申请号：US526101

    申请日：1995-09-11

    申请人： Iwao Matsumae ,  Kazuhiro Yuasa ,  Shuichi Endoh ,  Yoshiaki Tanaka ,  Hiroshi Hosokawa ,  Mugijiroh Uno ,  Hiroshi Saitoh ,  Eiji Takenaka ,  Toshihiro Sugiyama ,  Tetsuo Yamanaka ,  Eisaku Murakami ,  Satoru Komatsubara

    发明人： Iwao Matsumae ,  Kazuhiro Yuasa ,  Shuichi Endoh ,  Yoshiaki Tanaka ,  Hiroshi Hosokawa ,  Mugijiroh Uno ,  Hiroshi Saitoh ,  Eiji Takenaka ,  Toshihiro Sugiyama ,  Tetsuo Yamanaka ,  Eisaku Murakami ,  Satoru Komatsubara

    IPC分类号： G03G15/08

    CPC分类号： G03G15/0898 ,  G03G15/0817

    摘要： A developing device which includes a first toner transporting roller, a second toner transporting roller to which toner is transported from the first toner transporting roller and an image bearing member such as a photoconductive drum or belt. Seals are located between the circumferential ends of one of the toner transporting rollers and a bottom portion of a toner hopper. When the seals are between the bottom of toner hopper and the first toner transporting roller, the first toner transporting roller is longer than the second toner transporting roller and the circumferential portions of the first toner transporting roller which contact the seals do not contact the second toner transporting roller. Alternatively, when the seals are between the bottom of toner hopper and the second toner transporting roller, the second toner transporting roller is longer than the first toner transporting roller and the circumferential portions of the second toner transporting roller which contact the seals do not contact the first toner transporting roller. Additionally, when the seals contact the second toner transporting roller, side seals may be placed against the ends of the first toner transporting roller. In both of these arrangements, the length of the second toner transporting roller is shorter than a length of an effective area of a photoconductive layer on the image bearing member.

    摘要翻译： 一种显影装置，包括第一调色剂输送辊，第二调色剂输送辊，调色剂从第一调色剂输送辊输送到该第二调色剂输送辊和图像承载部件，例如感光鼓或带。 密封件位于调色剂输送辊之一的周向端部和调色剂料斗的底部之间。 当密封件位于调色剂料斗的底部和第一调色剂传送辊之间时，第一调色剂传送辊比第二调色剂传送辊长，并且与密封件接触的第一调色剂传送辊的圆周部分不接触第二调色剂 运输辊。 或者，当密封件位于调色剂料斗的底部和第二调色剂输送辊之间时，第二调色剂输送辊比第一调色剂输送辊长，并且与密封件接触的第二调色剂输送辊的圆周部分不接触 第一调色剂输送辊。 此外，当密封件接触第二调色剂传送辊时，可以将侧面密封件抵靠第一调色剂传送辊的端部放置。 在这两种布置中，第二调色剂输送辊的长度短于图像承载部件上的光电导层的有效面积的长度。

    Developing device for an electrophotographic recording apparatus including bias control of a toner supplying roller
    5.
    发明授权
    Developing device for an electrophotographic recording apparatus including bias control of a toner supplying roller 失效
    一种用于电子照相记录装置的显影装置，包括调色剂供应辊的偏压控制

    公开(公告)号：US5826144A

    公开(公告)日：1998-10-20

    申请号：US638697

    申请日：1996-04-26

    申请人： Eiji Takenaka ,  Kazuhiro Yuasa ,  Shuichi Endoh ,  Iwao Matsumae ,  Yoshiaki Tanaka ,  Hiroshi Hosokawa ,  Mugijiroh Uno ,  Hiroshi Saitoh ,  Toshihiro Sugiyama ,  Tetsuo Yamanaka ,  Eisaku Murakami ,  Satoru Komatsubara

    发明人： Eiji Takenaka ,  Kazuhiro Yuasa ,  Shuichi Endoh ,  Iwao Matsumae ,  Yoshiaki Tanaka ,  Hiroshi Hosokawa ,  Mugijiroh Uno ,  Hiroshi Saitoh ,  Toshihiro Sugiyama ,  Tetsuo Yamanaka ,  Eisaku Murakami ,  Satoru Komatsubara

    IPC分类号： G03G15/06 ,  G03G15/08

    CPC分类号： G03G15/0808 ,  G03G2215/0614

    摘要： In an electrophotographic recording apparatus of the type using a single-ingredient type developer, i.e., toner, a developing device has a developing roller for conveying the toner deposited thereon, and an intermediate roller for conveying the toner transferred theretofrom the developing roller and depositing it on a latent image electrostatically formed on an image carrier to thereby produce a corresponding toner image. During the development of an area of the image carrier other than a latent image area, a bias assigned to the developing roller is switched over to thereby form an electric field different in direction from an electric field assigned to the formation of the toner image between the two rollers. Further, before the rotation of the image carrier is stopped, the bias assigned to the developing roller is again switched in order to form the electric field for the formation of the toner image between the rollers. As a result, a toner layer is formed on the intermediate roller. Subsequently, the rotation of the image carrier is stopped. The device obviates defective images ascribable to the adhesion of the image carrier and intermediate roller while eliminating background contamination and wasteful toner consumption.

    摘要翻译： 在使用单成分型显影剂（即调色剂）的电子照相记录装置中，显影装置具有用于输送沉积在其上的调色剂的显影辊和用于输送从显影辊转移到其上的调色剂并将其沉积的中间辊 在静电形成在图像载体上的潜像上，从而产生相应的调色剂图像。 在除了潜像区域之外的图像载体的区域的显影期间，分配给显影辊的偏压被切换，从而形成与分配给形成调色剂图像的电场不同的方向的电场 两个滚筒。 此外，在停止图像载体的旋转之前，再次切换分配给显影辊的偏压，以形成用于在辊之间形成调色剂图像的电场。 结果，在中间辊上形成调色剂层。 随后，停止图像载体的旋转。 该装置消除由于图像载体和中间辊的粘附而导致的不良图像，同时消除背景污染和浪费的调色剂消耗。