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    Ink jet recording apparatus having a driving wheel mechanism for pressurizing tubes of a tube pump
    5.
    发明授权
    Ink jet recording apparatus having a driving wheel mechanism for pressurizing tubes of a tube pump 失效
    具有用于对管式泵的管进行加压的驱动轮机构的喷墨记录装置

    公开(公告)号：US6164767A

    公开(公告)日：2000-12-26

    申请号：US352941

    申请日：1999-07-14

    申请人： Masahiro Nakamura ,  Hayato Nishikaze ,  Nobuhito Takahashi ,  Seiji Mochizuki ,  Kazuhisa Kawakami ,  Keiichi Ohshima ,  Satoshi Fujioka

    发明人： Masahiro Nakamura ,  Hayato Nishikaze ,  Nobuhito Takahashi ,  Seiji Mochizuki ,  Kazuhisa Kawakami ,  Keiichi Ohshima ,  Satoshi Fujioka

    IPC分类号： B41J2/165 ,  F04B43/12 ,  B41J2/175

    CPC分类号： B41J2/16547 ,  B41J2/16508 ,  B41J2/16511 ,  B41J2/16532 ,  B41J23/025 ,  F04B43/1253 ,  F04B43/1276 ,  F04B43/1292

    摘要： A tube pump for an ink jet printer includes a driving wheel that is selectively driven in a forward or reverse direction in accordance with the rotation of a drive source. The driving wheel contains two slots that extend symmetrically and radially from the center of the driving wheel. The pump also includes two rollers that are coupled to the drive wheel via roller shafts respectively extending from a radial center of the rollers into the slots. A pressing piece is also provided that forces the shafts into the radially outermost end of the slots to press a tube of the tube pump when said drive wheel rotates in reverse and forces the shafts into the radially innermost end of the slots to not press the tube when said drive wheel rotates in the forward direction. In an alternative arrangement, the tube pump contains a pump chamber, and a tube having an .alpha.-like-shaped loop portion is inserted into and disposed along the inner wall of the pump chamber. A driving wheel train is provided, rotated around a shaft of the pump chamber, and has a single roller that cooperates with the inner wall of the pump chamber to press the tube. Also, a guide slot is formed in the driving wheel train to transfer the roller between a tube pressurizing state and a tube nonpressurizing state based on the rotation of the driving wheel train.

    摘要翻译： 用于喷墨打印机的管式泵包括根据驱动源的旋转而选择性地沿正向或反向驱动的驱动轮。 驱动轮包含从驱动轮的中心对称和径向延伸的两个槽。 泵还包括两个辊，其通过分别从辊的径向中心延伸到槽中的辊轴联接到驱动轮。 还提供一个按压片，当所述驱动轮反向旋转时，迫使所述轴进入所述狭槽的径向最外端，以挤压所述管泵的管，并迫使所述轴进入所述狭槽的径向最内端以不按压所述管 当所述驱动轮沿向前方向旋转时。 在另一种配置中，管泵包含泵室，并且具有α状环状部分的管插入并设置在泵室的内壁上。 提供驱动轮系，围绕泵室的轴旋转，并且具有与泵室的内壁配合以压紧管的单个辊。 此外，在驱动轮系中形成引导槽，以基于驱动轮系的旋转在辊加压状态和管非加压状态之间转移辊。