BRIEF DESCRIPTION OF THE DRAWINGS
Other and further objects, features and advantages of the invention will appear more fully from the following description taken in connection with the accompanying drawings in which:
FIG. 1 schematically illustrates a construction of an ink-jet printer according to an embodiment of the present invention;
FIG. 2 is a plan view of a head main body that is included in the ink-jet printer shown in FIG. 1;
FIG. 3 shows on an enlarged scale a part enclosed by an alternate long and short dash line in FIG. 2;
FIG. 4 is a sectional view as taken along line IV-IV in FIG. 3;
FIG. 5 is a plan view on an enlarged scale of a part of an actuator unit shown in FIG. 2;
FIG. 6 is a block diagram schematically showing an electrical construction of the ink-jet printer shown in FIG. 1;
FIG. 7 is a waveform diagram showing ejection waveform signals that are generated by respective parts of an ejection waveform generator illustrated in FIG. 6;
FIG. 8 is a waveform diagram showing a fundamental waveform of a preliminary vibration waveform signal that is generated by a preliminary vibration waveform generator shown in FIG. 6;
FIGS. 9A and 9B are schematic diagrams showing print signals that are supplied by a print signal supplier shown in FIG. 6, with the ejection waveform signal and the preliminary vibration waveform signal being applied thereto, respectively;
FIG. 10 shows a state where for every sub manifold channel a delay occurs in a rectangular wave of the ejection waveform signal; and
FIGS. 11A, 11B, and 11C are timewise views showing ink being ejected from a nozzle by driving of the actuator unit.