Liquid Discharge Head Having a Common Flow Channel and a Plurality of Individual Flow Channels, and Liquid Discharge Device Having the Liquid Discharge Head

A liquid discharge head comprising:

• a common flow channel extending along a first direction;
• and
• a plurality of individual flow channels arranged along the first direction, each individual flow channel comprising:
• a first pressure chamber and a second pressure chamber arranged along the first direction, each of the first and second pressure chambers communicating with the common flow channel;
• a nozzle located away from the first pressure chamber and the second pressure chamber in a second direction orthogonal to the first direction;
• and
• a connection flow channel configured to connect the first pressure chamber, the second pressure chamber, and the nozzle with each other, the connection flow channel having a first end and a second end in the second direction, the first end of the connection flow channel in the second direction communicating with the first pressure chamber and the second pressure chamber, the second end of the connection flow channel in the second direction communicating with the nozzle, the connection flow channel being further configured to communicate with nothing other than the first pressure chamber, the second pressure chamber, and the nozzle.

A liquid discharge device comprising:

• a common flow channel extending along a first direction;
• a plurality of individual flow channels arranged along the first direction, each individual flow channel comprising:
• a first pressure chamber and a second pressure chamber arranged along the first direction, each of the first and second pressure chambers communicating with the common flow channel;
• a nozzle located away from the first pressure chamber and the second pressure chamber in a second direction orthogonal to the first direction;
• and
• a connection flow channel configured to connect the first pressure chamber, the second pressure chamber, and the nozzle with each other, the connection flow channel having a first end and a second end in the second direction, the first end of the connection flow channel in the second direction communicating with the first pressure chamber and the second pressure chamber, the second end of the connection flow channel in the second direction communicating with the nozzle, the connection flow channel extending along the second direction from the first end to the second end thereof in the second direction;
• a first actuator disposed to overlap with the first pressure chamber of each individual flow channel when viewed in the second direction;
• a second actuator disposed to overlap with the second pressure chamber of each individual flow channel when viewed in the second direction;
• and
• a controller configured to perform an in-phase driving process to provide in-phase drive signals to the first actuator and the second actuator, when causing the nozzle to discharge liquid therefrom.

A liquid discharge device comprising:

• a common flow channel extending along a first direction;
• a plurality of individual flow channels arranged along the first direction, each individual flow channel comprising:
• a first pressure chamber and a second pressure chamber arranged along the first direction, each of the first and second pressure chambers communicating with the common flow channel;
• a nozzle located away from the first pressure chamber and the second pressure chamber in a second direction orthogonal to the first direction;
• and
• a connection flow channel configured to connect the first pressure chamber, the second pressure chamber, and the nozzle with each other, the connection flow channel having a first end and a second end in the second direction, the first end of the connection flow channel in the second direction communicating with the first pressure chamber and the second pressure chamber, the second end of the connection flow channel in the second direction communicating with the nozzle, the connection flow channel being further configured to communicate with nothing other than the first pressure chamber, the second pressure chamber, and the nozzle;
• a first actuator disposed to overlap with the first pressure chamber of each individual flow channel when viewed in the second direction;
• a second actuator disposed to overlap with the second pressure chamber of each individual flow channel when viewed in the second direction;
• and
• a controller configured to perform an in-phase driving process to provide in-phase drive signals to the first actuator and the second actuator, when causing the nozzle to discharge liquid therefrom.