Filter tower for ink jet printhead

摘要

A filter tower structure for removing air or gas bubbles from an ink jet printing structure which includes a filter tower attached to an ink reservoir for feeding ink from the reservoir to a printhead, the filter tower structure including a conduit having an interior in flow communication with the ink reservoir and the printhead and a tube having a first end in flow communication with the interior of the conduit and a second end in flow communication with a vacuum source, wherein activation of the vacuum source results in the application of a reduced pressure to the interior of the conduit such that air or gas bubbles are caused to flow into the tube and exit the conduit and ink from the reservoir is caused to flow into the conduit.