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    • 7. 发明授权
    • Ink jet recording apparatus having a driving wheel mechanism for
pressurizing tubes of a tube pump
    • 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
    • US6164767A
    • 2000-12-26
    • US352941
    • 1999-07-14
    • Masahiro NakamuraHayato NishikazeNobuhito TakahashiSeiji MochizukiKazuhisa KawakamiKeiichi OhshimaSatoshi Fujioka
    • Masahiro NakamuraHayato NishikazeNobuhito TakahashiSeiji MochizukiKazuhisa KawakamiKeiichi OhshimaSatoshi Fujioka
    • B41J2/165F04B43/12B41J2/175
    • B41J2/16547B41J2/16508B41J2/16511B41J2/16532B41J23/025F04B43/1253F04B43/1276F04B43/1292
    • 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.
    • 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。
    • 10. 发明授权
    • Ink jet recording apparatus
    • 喷墨记录装置
    • US5606353A
    • 1997-02-25
    • US207747
    • 1994-03-09
    • Seiji MochizukiKazuhisa KawakamiMasahiro NakamuraKeiichi Ohshima
    • Seiji MochizukiKazuhisa KawakamiMasahiro NakamuraKeiichi Ohshima
    • B41J2/165B41J2/17B41J2/175B41J2/18B41J2/185B41J29/00
    • B41J2/17553B41J2/16532B41J2/1721B41J2/17513B41J2/1752B41J2/17523B41J2/17546B41J2/17566B41J2002/1728B41J2002/17579
    • An ink jet recording apparatus which includes a recording head communicated via an ink supply needle with an ink tank and including electrodes for detecting a remaining amount of ink and being responsive to a print signal for spouting ink drops to recording paper, a capping unit abutting against the front of said recording head for holding the nozzle openings in an airtight state, a suction pump for supplying negative pressure to the capping unit, a resistance value detection circuit for detecting electric resistance across the electrodes for detecting a remaining amount of ink, a reference value storage unit for storing a resistance value across the electrodes relative to the remaining amount of ink in the ink tank, a resistance value comparison unit for comparing the resistance across the electrodes with the reference value, and a pump control unit responsive to the resistance value comparison result for controlling a pulse motor driving the suction pump. The resistance value detected by the resistance value detection circuit is compared with the reference value stored in the reference value storage unit to determine whether or not an ink tank is mounted, remounted, how much ink is in the ink tank, etc. Based on the determination result, the motor is controlled by the pump control unit for selecting the suction mode of ink from the recording head.
    • 一种喷墨记录装置,包括经由供墨针与墨槽连通的记录头,并包括用于检测剩余墨量的电极,并且响应于将墨滴喷射到记录纸上的打印信号,封盖单元抵靠 用于将喷嘴开口保持在气密状态的所述记录头的前部,用于向封盖单元供给负压的抽吸泵,用于检测用于检测墨水剩余量的电极两端的电阻的电阻值检测电路, 价值存储单元,用于存储电极周围的电阻值相对于墨水罐中的剩余墨量;电阻值比较单元,用于将电极两端的电阻与基准值进行比较;以及泵控制单元,其响应于电阻值 用于控制驱动抽吸泵的脉冲电机的比较结果。 将由电阻值检测电路检测到的电阻值与存储在基准值存储单元中的参考值进行比较,以确定是否安装墨水盒,重新安装墨水盒中的墨水量等。基于 确定结果,电动机由泵控制单元控制,用于从记录头选择油墨的吸入模式。