PRINTHEAD WITH BUBBLE VENTS

摘要

An inkjet printhead includes a plurality of ink chambers fed by a common ink inlet, the plurality of ink chambers sharing a common roof structure; a plurality of heater elements respectively allocated to each of ink chambers; a plurality of nozzle apertures defined through the common roof structure and respectively aligned with the heater element of each ink chamber; and a bubble vent defined in the common roof of the ink chambers and aligned with the common ink inlet, the bubble vent sized to allow ink surface tension to restrict an egress of ink, and permit egress of gas bubbles therefrom.