Patent ID: 7992965

Claim:
An ink jet printhead for use in ink jet printing, comprising: a substrate having an oblong recessed region forming a ceiling and interior side walls of a bubble chamber, said oblong recessed region having a length dimension and a width dimension, said length dimension being greater than said width dimension, said oblong recessed region having a first end spaced apart from a second end in said length dimension, and said substrate having an ink inlet channel passing through said ceiling to form an ink inlet port near said first end of said oblong recessed region; a nozzle plate attached to said substrate to form a floor of said bubble chamber, said nozzle plate having an ink jet nozzle passing through said nozzle plate, said ink jet nozzle being positioned in fluid communication with said bubble chamber at a location near said second end of said recessed region; and a resistive heater element suspended from said first end to said second end of said oblong recessed region of said bubble chamber, and suspended between said floor and said ceiling of said bubble chamber.