Patent ID: 8251497

Claim:
A fluid ejection device for ejecting a plurality of fluids, the fluid ejection device comprising: a printhead die including a first array of drop ejectors with a corresponding first fluid inlet, and a second array of drop ejectors with a corresponding second fluid inlet that is adjacent to the first fluid inlet; and an injection-molded mounting substrate for the fluid ejection device, wherein the injection-molded mounting substrate includes: a housing portion including a recess and an indentation within the recess; and a die-attach portion formed within the recess of the housing portion, the die-attach portion including: a first passageway and a second passageway that are fluidly coupled to the first fluid inlet and the second fluid inlet, respectively, of the printhead die; a first wall that conforms to a shape of the recess; and a second wall that conforms to a shape of the indentation within the recess.