Ink jet printhead configured to minimize ink-flow dead zones in the bubble chamber

摘要

An ink jet printhead for use in ink jet printing includes a substrate and a nozzle plate. The substrate has an oblong recessed region forming a ceiling and interior side walls of a bubble chamber. The oblong recessed region has a length dimension that is greater than its width dimension. The oblong recessed region has a first end spaced apart from a second end in the length dimension. The substrate has an ink inlet channel passing through the ceiling to form an ink inlet port near the first end of the oblong recessed region. The nozzle plate is attached to the substrate to form a floor of the bubble chamber. The nozzle plate has an ink jet nozzle passing through the nozzle plate. The ink jet nozzle is positioned in fluid communication with the bubble chamber at a location near the second end of the recessed region.