BACKGROUND

Printing devices operate to dispense a liquid onto a surface of a substrate. These printing devices may include two-dimensional (2D) and three-dimensional (3D) printing devices. In the context of a 2D printing device, a liquid such as an ink may be deposited onto the surface of the substrate such as paper. In the context of a 3D printing device, an additive manufacturing liquid may be dispensed onto the surface of the substrate in order to build up a 3D object during an additive manufacturing process. Often, print liquid is supplied to a printing device from a reservoir or other supply. The print liquid reservoir holds a volume of print liquid that is passed to a liquid deposition mechanism and ultimately deposited on a surface of the substrate.

