Patent ID: 8091984

Claim:
An inkjet printhead comprising: a wafer having a droplet ejection side and a liquid supply side opposite the droplet ejection side; a plurality of active ink ejection structures formed on the droplet ejection side of the wafer, each active ink ejection structure partially defining a nozzle chamber, and defining an ink ejection port; a plurality of individual fluid passages formed in the wafer, each fluid passage providing fluid to corresponding nozzle chambers; a plurality of static ink ejection structures formed on the droplet ejection side of the wafer and inside of corresponding active ink ejection structures, each static ink ejection structure defining a nozzle chamber with a corresponding active ink ejection structure; and, droplet ejection actuators respectively corresponding to each active ink ejection structure, the droplet ejection actuators being formed on the droplet ejection side of the wafer and attached to respective active ink ejection structures, wherein, the droplet ejection actuators are operable to displace an active ink ejection structures towards a corresponding static ink ejection structure to effect ejection of fluid in the nozzle chamber through the ink ejection port.