BACKGROUND

Fluidic dies, such as inkjet printheads can be used for various purposes. In the case of printheads, the fluidic die can be used to eject ink or other fluids from a firing chamber through a printing orifice. For example, a firing resistor can be used to thermally generate bubbles suitable to rapidly displace fluid within the firing chamber for ejection of the fluid through the printing orifice. The resistor and other components used for this can be isolated from the fluid that may be present in the firing chamber using any of a number of types of protective layers of material. The firing of ink from a firing chamber can be repeated thousands of times per second in some instances, which can have a deleterious effect on the protective layer and/or other layers.

