Systems and methods are described including creating a mask that indicates which pixel groups do not need to be loaded from Graphics Memory. A second invention facet forms a grid of optimum widthit corresponds to maximum sensitivity only if seen from much farther than reading distance. A randomized signal detector is configured to detect a randomized signal, which may be amplified to a predetermined level if the randomized signal is low. The positions of the moving sections are showed by indicators. In the process of ejecting ink to the outside, ink that flows back from the pressure chambers towards the individual manifolds through the restrictors does not influence adjacent pressure chambers, thus preventing cross-talk. The control system may also place the dynamic cab extender in a stowed position.