Patent ID: 7350902

Claim:
A fluid ejection device comprising: a substrate comprising: a first fluid delivery pathway; a second fluid delivery pathway; a first nozzle array in fluid communication with the first fluid delivery pathway, the first nozzle array including a plurality of nozzles arranged in a first nozzle group at a pitch P and in a second nozzle group at the pitch P, the first group and the second group extending in a first direction along the first nozzle array, the first group being spaced apart from the second group in a second direction, each of the plurality of nozzles of the first nozzle array having a first opening area; and a second nozzle array in fluid communication with the second fluid delivery pathway, the second nozzle array including a plurality of nozzles arranged in a first nozzle group at the pitch P and a second nozzle group at the pitch P, the first group and the second group extending in the first direction, the first group being spaced apart from the second group in the second direction, each of the plurality of nozzles of the second nozzle array having a second opening area, the second opening area being less than the first opening area, the nozzles of the first nozzle group and the second nozzle group of the second nozzle array being offset by a distance of P/4 in the first direction when compared to the first nozzle group of the first nozzle array and the second nozzle group of the first nozzle array.