Patent ID: 9539806
Date: 2017-01-10
CPC Classifications: B41J

Claim:
1. A liquid discharge apparatus comprising: an actuator element configured to receive a drive signal to discharge a liquid, wherein the liquid is an ink including a polar solvent, with the polar solvent including one or more compounds among 1,2-hexanediol, triethyleneglycol-monobutylether, glycerol, propylene glycol, 2-pyrrolidone, N-methyl pyrrolidone, pyrrole, furan, thiophene, imidazole, oxazole, thiazole, pyrazole, isoxazole, isothiazole, pyridine, pyridazine, pyrimidine, pyrazine, piperidine, piperazine, morpholine, 2H-pyran, 4H-pyran, E-caprolactam, dimethyl sulfoxide, sulfolane, N-ethyl morpholine, 1,3-dimethyl-2-imidazolidinone, N-acryloyl morpholine, and N,N-vinyl-2-pyrrolidone, a waveform of the drive signal includes a non-rectangular shaped pulse having a plurality of ripples, and the drive signal is obtained by subjecting an original drive signal to non-linear current amplification.