BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a schematic structural view of an ink-jet printer according to an embodiment of the present invention;
FIG. 2 is a plan view of an ink-jet head;
FIG. 3 is a partial enlarged view of FIG. 2;
FIG. 4 is a cross-sectional view taken along IV-IV line in FIG. 3;
FIG. 5 is a cross-sectional view taken along V-V line in FIG. 3;
FIGS. 6A to 6C are explanatory views of producing steps of the ink-jet head;
FIG. 7 is a schematic structural view of a film-forming apparatus;
FIG. 8A is a view showing a positional relationship between a vibration plate and a film-forming nozzle in a certain area of the vibration plate when a piezoelectric material layer is formed, FIG. 8B is a view showing a positional relationship between the vibration plate and the film-forming nozzle in another area of the vibration plate when a piezoelectric material layer is formed, and FIG. 8C is a view showing a relationship between a jet-area and active portions;
FIGS. 9A to 9C are views showing a film-formation state of a piezoelectric material layer when the film-forming nozzle is relatively moved in a direction parallel to a scanning direction, FIG. 9A being a plan view of the ink-jet head, FIG. 9B being a side view of a piezoelectric actuator seen from the scanning direction, and FIG. 9C being a side view of the piezoelectric actuator seen from a paper feeding direction;
FIG. 10 is a plan view of the ink-jet head having the piezoelectric material layer formed by the film-forming step in FIGS. 9A to 9C, and is a view showing dots formed on a recording paper by the ink-jet head;
FIGS. 11A to 11C are views showing a film-formation state of a piezoelectric material layer when the film-forming nozzle is relatively moved in a direction parallel to the paper feeding direction, FIG. 11A being a plan view of the ink-jet head, FIG. 11B being a side view of the piezoelectric actuator seen from the scanning direction, and FIG. 11C being a side view of the piezoelectric actuator seen from the paper feeding direction;
FIG. 12A is a plan view of the ink-jet head having the piezoelectric material layer formed by the film-forming step of FIGS. 11A to 11C and is a view showing dots formed on a recording paper by the ink-jet head, and FIG. 12B is a side view of the piezoelectric actuator seen from the paper feeding direction;
FIGS. 13A to 13C are views showing a film-formation state of a piezoelectric material layer of a first modification, FIG. 13A being a plan view of an ink-jet head, FIG. 13B being a side view of a piezoelectric actuator seen from the scanning direction, and FIG. 13C being a side view of the piezoelectric actuator seen from the paper feeding direction;
FIG. 14 is a plan view of an ink-jet head of a second modification;
FIGS. 15A to 15C are views showing a film-formation state of a piezoelectric material layer of a third modification, FIG. 15A being a plan view of a piezoelectric actuator (ink-jet head), FIG. 15B being a side view of the piezoelectric actuator seen from the scanning direction, and FIG. 15C being a side view of the piezoelectric actuator seen from the paper feeding direction;
FIG. 16 is a plan view of an ink-jet head of a fourth modification;
FIG. 17 is a plan view of an ink-jet head of a fifth modification;
FIG. 18 is a cross-sectional view of an ink-jet head of a sixth modification, corresponding to FIG. 4;
FIG. 19 is a cross-sectional view of an ink-jet head of a seventh modification, corresponding to FIG. 4;
FIG. 20 is a plan view of a line-type ink-jet head of a eighth modification; and
FIG. 21A is a plan view of an ink-jet head having a piezoelectric material layer formed by a film-forming nozzle relatively moving in a direction parallel to the scanning direction, and FIG. 21B is a side view of a piezoelectric actuator seen from the scanning direction.