Importance

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Abstract

A printhead is provided for an inkjet printer. The printhead includes a wafer assembly defining a plurality of spaced apart groups of ink supply channels and a plurality of groups of ink ejection nozzle arrangements in fluid communication with respective ink supply channel groups. Each ink ejection nozzle arrangement includes a nozzle chamber structure mounted to the wafer assembly. Each ink ejection nozzle arrangement also defines a nozzle chamber for receiving ink from an ink supply channel and an ink ejection port through which ink in the nozzle chamber can be ejected. An anchor extends from the wafer assembly in a location external to the nozzle chamber. An elongate thermal actuator mechanism extends from the anchor and into the nozzle chamber. A pit is defined adjacent each nozzle chamber structure for catching ink and thereby impeding spilt ink from spreading across the printhead.

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First Claim