16 is a schematic block diagram of the print engine controller shown in FIGS. 14 and 15; [0059]FIG. 17 is a perspective view of a single MEMJET printing element, as used in, for example, the netpage printer of FIGS. 10 to 12; [0060]FIG. 18 is a perspective view of a small part of an array of MEMJET printing elements; [0061]FIG. 19 is a series of perspective views illustrating the operating cycle o