Patent ID: 7413289
Filing Date: 2008-08-19
Classification: B41J

Abstract:
1. A micro-fluid ejection head, comprising: a substrate having a plurality of thermal ejection actuators disposed thereon, each of the thermal ejection actuators including a resistive layer and a protective layer for protecting a surface of the resistive layer, the resistive layer and the protective layer together defining an actuator stack thickness; a flow feature member adjacent the substrate defining a fluid feed channel, a fluid chamber associated with at least one of the thermal ejection actuators and in flow communication with the fluid feed channel, and a nozzle, wherein the nozzle is offset to a side of the fluid chamber opposite the fluid feed channel; and a polymeric layer having a degradation temperature of less than about 400° C. overlapping a portion of the at least one thermal ejection actuator associated with the fluid chamber and positioned less than about five microns from at least an edge of the at least one actuator opposite the fluid feed channel.