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发明申请
US20070206050A1 Printhead assembly with ink pump and shut off valve 审中-公开
打印头组件，带墨水泵和关闭阀

Printhead assembly with ink pump and shut off valve
摘要：
A printhead assembly for engagement with an ink supply (112), a printhead integrated circuit (IC) (74) in fluid communication with the ink supply via an upstream ink line (67), the printhead IC (74), a waste ink outlet in fluid communication with the printhead IC (74) via a downstream ink line (106), an upstream shut off valve (138) in the upstream ink line (67), and, a downstream pump mechanism (114) in the downstream ink line. With a valve upstream of the printhead and a pump downstream of the printhead, the user has active control of the ink flow upstream, downstream or in the printhead IC. In the event that problems such as ink flooding, color mixing or printhead depriming occur, the user can follow simple troubleshooting protocols to rectify the situation.
摘要（中）：

打印头组件，用于与墨水供应源（112）接合，打印头集成电路（IC）（74）经由上游墨水管线（67）与墨水供应流体连通，打印头IC（74），废墨出口 与打印头IC（74）经由下游墨水管线（106），上游墨水管线（67）中的上游截止阀（138）和下游墨水管线（67）中的下游泵机构（114）流体连通 。 利用打印头上游的阀和打印头下游的泵，用户可以主动地控制上游，下游或打印头IC中的油墨流。 在发生油墨淹没，混色或打印头脱色等问题的情况下，用户可以按照简单的故障排除方案来纠正这种情况。

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