US 12,251,931 B2
Liquid ejecting apparatus
Yasuhiko Kosugi, Nagano (JP)
Assigned to Seiko Epson Corporation, Tokyo (JP)
Filed by SEIKO EPSON CORPORATION, Tokyo (JP)
Filed on Feb. 21, 2023, as Appl. No. 18/171,697.
Claims priority of application No. 2022-025378 (JP), filed on Feb. 22, 2022.
Prior Publication US 2023/0264472 A1, Aug. 24, 2023
Int. Cl. B41J 2/045 (2006.01)
CPC B41J 2/04555 (2013.01) 8 Claims
OG exemplary drawing
 
1. A liquid ejecting apparatus comprising:
a driven element that is driven by a drive signal;
an ejection head that ejects a liquid when the driven element is driven;
a drive circuit that outputs the drive signal, the drive circuit including an amplifier circuit that includes a first transistor and amplifies, based on an amplification voltage and through an operation of the first transistor, a base drive signal based on which the drive signal is generated; and
a leakage current detection circuit that detects a leakage current in the drive circuit, wherein
the leakage current detection circuit is electrically connected to the first transistor included in the amplifier circuit to which the amplification voltage is supplied,
the amplification voltage is supplied to one end of the first transistor, and
the leakage current detection circuit detects the leakage current when the first transistor is controlled to be non-conductive.