US 12,459,252 B2
Liquid discharge apparatus
Masahiko Tsuyuki, Chino (JP); and Makoto Takamuku, Matsumoto (JP)
Assigned to SEIKO EPSON CORPORATION, (JP)
Filed by SEIKO EPSON CORPORATION, Tokyo (JP)
Filed on Sep. 29, 2023, as Appl. No. 18/478,540.
Claims priority of application No. 2022-158892 (JP), filed on Sep. 30, 2022.
Prior Publication US 2024/0109298 A1, Apr. 4, 2024
Int. Cl. B41J 2/045 (2006.01); B41J 29/377 (2006.01)
CPC B41J 2/04541 (2013.01) [B41J 2/04523 (2013.01); B41J 2/04548 (2013.01); B41J 2/0455 (2013.01); B41J 2/04553 (2013.01); B41J 2/04581 (2013.01); B41J 29/377 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A liquid discharge apparatus comprising:
a print head that discharges a liquid;
a first drive circuit that includes a first integrated circuit, a first transistor, and a first coil, and outputs a first driving signal for discharging a liquid from the print head;
a second drive circuit that includes a second integrated circuit, a second transistor, and a second coil, and outputs a second driving signal for discharging a liquid from the print head;
a third drive circuit that includes a third integrated circuit, a third transistor, and a third coil, and outputs a third driving signal for discharging a liquid from the print head;
a first substrate provided with the first drive circuit and the second drive circuit; and
a second substrate provided with the third drive circuit, wherein
the first substrate includes a first side and a second side positioned facing each other, a third side and a fourth side intersecting the first side and the second side and positioned facing each other, and a first substrate front surface,
the second substrate includes a fifth side and a sixth side positioned facing each other, a seventh side and an eighth side intersecting the fifth side and the sixth side and positioned facing each other, and a second substrate front surface,
the first integrated circuit, the first transistor, and the first coil are provided on the first substrate front surface to be arranged in an order of the first integrated circuit, the first transistor, and the first coil along a first direction from the first side to the second side,
the second integrated circuit, the second transistor, and the second coil are provided on the first substrate front surface to be arranged in an order of the second integrated circuit, the second transistor, and the second coil along the first direction,
the first drive circuit and the second drive circuit are positioned to be adjacent to each other in an order of the first drive circuit and the second drive circuit along a second direction from the third side to the fourth side,
the third integrated circuit, the third transistor, and the third coil are provided on the second substrate front surface to be arranged in an order of the third integrated circuit, the third transistor, and the third coil along a third direction from the fifth side to the sixth side,
the first substrate and the second substrate are positioned such that the first substrate front surface and the second substrate front surface face each other along a fourth direction intersecting both the first direction and the second direction,
when viewed along the second direction, the first drive circuit overlaps with at least a part of the second drive circuit,
when viewed along the second direction, the first integrated circuit does not overlap with the second integrated circuit,
when viewed along the fourth direction, the first drive circuit overlaps with at least a part of the third drive circuit, and
when viewed along the fourth direction, the first integrated circuit does not overlap with the third integrated circuit.