Liquid discharge apparatus

A liquid discharge apparatus comprising:

• a head unit including
• a first head including a first piezoelectric element, a first head side terminal electrically coupled to the first piezoelectric element, a second piezoelectric element, a second head side terminal electrically coupled to the second piezoelectric element,
• a second head having a first portion which overlaps a first portion of the first head when viewed in a first direction and another portion which does not overlap the first portion of the first head when viewed in the first direction, and the second head is located at a position which does not overlap the first head when viewed in a second direction orthogonal to the first direction, and
• a fixing portion to which the first head and the second head are fixed;
• a first drive circuit substrate provided with a first circuit side terminal and a second circuit side terminal;
• a first flexible wiring substrate having one end coupled to the first head side terminal and the other end coupled to the first circuit side terminal, and drawn out from a position on one side of the first head in the first direction;
• a second flexible wiring substrate having one end coupled to the second head side terminal and the other end coupled to the second circuit side terminal, and drawn out from a position on the other side of the first head in the first direction;
• a second drive circuit substrate provided with a third circuit side terminal and a fourth circuit side terminal;
• a third flexible wiring substrate having one end coupled to a third head side terminal provided in the second head and the other end coupled to the third circuit side terminal, and drawn out from a position on one side of the second head in the first direction;
• and
• a fourth flexible wiring substrate having one end coupled to a fourth head side terminal provided in the second head and the other end coupled to the fourth circuit side terminal, and drawn out from a position on the other side of the first head in the first direction, wherein
• the first drive circuit substrate is provided at a position displaced to the other side in the first direction with respect to a center of the first head in the first direction,
• the first circuit side terminal is provided on a first surface of the first drive circuit substrate which faces one side in the first direction,
• the second circuit side terminal is provided on a second surface of the first drive circuit substrate which faces the other side in the first direction,
• when a direction orthogonal to both the first direction and the second direction is defined as a third direction, and a side on which the first head is viewed from the first drive circuit substrate along the third direction is defined as a predetermined side, the first circuit side terminal is provided at a position on the predetermined side with respect to the second circuit side terminal
• the second drive circuit substrate is provided at a position displaced to one side in the first direction with respect to a center of the second head in the first direction,
• the third circuit side terminal is provided on a third surface of the second drive circuit substrate which faces one side in the first direction,
• the fourth circuit side terminal is provided on a fourth surface of the second drive circuit substrate which faces the other side in the first direction, and
• the fourth circuit side terminal is provided at a position on the predetermined side of the second drive circuit substrate with respect to the third circuit side terminal.

A liquid discharge apparatus comprising:

• a head unit including
• a first head including a first piezoelectric element, a first head side terminal electrically coupled to the first piezoelectric element, a second piezoelectric element, a second head side terminal electrically coupled to the second piezoelectric element,
• a second head having a first portion which overlaps a first portion of the first head when viewed in a first direction and another portion which does not overlap the first head when viewed in the first direction, and the second head is located at a position which does not overlap the first head when viewed in a second direction orthogonal to the first direction, and
• a fixing portion to which the first head and the second head are fixed;
• a first drive circuit substrate provided with a first circuit side terminal and a second circuit side terminal;
• a first flexible wiring substrate having one end coupled to the first head side terminal and the other end coupled to the first circuit side terminal, and drawn out from a position on one side of the first head in the first direction;
• and
• a second flexible wiring substrate having one end coupled to the second head side terminal and the other end coupled to the second circuit side terminal, and drawn out from a position on the other side of the first head in the first direction, wherein
• the first drive circuit substrate is provided at a position displaced to the other side in the first direction with respect to a center of the first head in the first direction,
• the first circuit side terminal is provided on a first surface of the first drive circuit substrate which faces one side in the first direction,
• the second circuit side terminal is provided on a second surface of the first drive circuit substrate which faces the other side in the first direction,
• when a direction orthogonal to both the first direction and the second direction is defined as a third direction, and a side on which the first head is viewed from the first drive circuit substrate along the third direction is defined as a predetermined side, the first circuit side terminal is provided at a position on the predetermined side with respect to the second circuit side terminal,
• when a distance between the first circuit side terminal and the second circuit side terminal in the third direction is defined as A, and a width of the first head in the first direction is defined as B, A<2×B, and
• (1/2)×B<A<(3/2)×B.