Printing apparatus and method for allocating power circuits in the printing apparatus

A printing apparatus comprising:

• actuators configured to exert force to liquid;
• power circuits configured to apply voltages to the actuators;
• and
• a switching circuit configured to switch connection destination of each of the actuators to any of the power circuits,
• wherein the actuators are divided into actuator groups according to the voltage of driving each of the actuators, and
• at least two of the power circuits are connected to an actuator group, of the actuator groups, having the largest number of actuators included therein, by the switching circuit.

A printing apparatus comprising:

• first actuators to exert force to liquid;
• second actuators to exert force to liquid, the number of the second actuators being smaller than the number of the first actuators;
• a first power circuit;
• a second power circuit, a magnitude of the voltage of the second power circuit being same with a magnitude of the voltage of the first power circuit;
• and
• a third power circuit, a magnitude of the voltage of the third power circuit being different from the magnitudes of the voltages of the first and second power circuits,
• wherein:
• the first power circuit is electrically connected to some of the first actuators;
• the second power circuit is electrically connected to the other of the first actuators;
• and
• the third power circuit is electrically connected to the second actuators.

A printing apparatus comprising:

• first and second actuators to exert force to liquid, the number of the second actuators being smaller than the number of the first actuators;
• first, second and third power circuits;
• a switching circuit;
• and
• a controller electrically connected to the switching circuit, the first power circuit, the second power circuit and the third power circuit,
• wherein:
• the controller is configured to control the switching circuit to connect the first power circuit and some of the first actuators, connect the second power circuit and the other of the first actuators and connect the third power circuit and the second actuators;
• voltage of the first power circuit connected to the some of the first actuators is same with voltage of the second power circuit connected to the other of the first actuators;
• and
• voltage of the first power circuit connected to the some of the first actuators is different from the voltage of the third power circuit connected to the second actuators.

A printing apparatus comprising:

• first and second actuators to exert force to liquid, the number of the second actuators being smaller than the number of the first actuators;
• first, second and third power circuits;
• a switching circuit;
• a memory storing first voltage data and second voltage data, the first voltage data associated with a first voltage to be applied to the first actuators, the second voltage data associated with a second voltage to be applied to the second actuators;
• and
• a gate array electrically connected to the switching circuit, the first power circuit, the second power circuit, the third power circuit and the memory,
• wherein the gate array is configured to:
• based on the stored first voltage data in the memory, connect the first power circuit and the some of the first actuators and set voltage of the first power circuit to the first voltage;
• based on the stored first voltage data in the memory, connect the second power circuit and the other of the first actuators and set voltage of the second power circuit to the first voltage;
• and
• based on the stored second voltage data in the memory, connect the third power circuit and the second actuators and set voltage of the third power circuit to the second voltage.