Patent ID: 8764146

Claim:
A printing apparatus comprising: a head having a nozzle through which ink that contains thermoplastic resin particles and whose viscosity at 50° C. is equal to or greater than 2.1 mPa·s is discharged, pressure chamber provided for the nozzle, and driving element provided for the pressure chamber; an ink non-absorptive medium; a heating unit that heats the medium; and a control unit that drives the driving element by applying driving signal thereto to expand and contract the pressure chamber corresponding to the respective driving element so as to discharge ink droplets through the nozzle that communicate with the pressure chamber, wherein a discharge waveform generated by the driving signal includes: a first expansion element that expands the pressure chamber; a contraction element that contracts the pressure chamber having been expanded by the first expansion element; a second expansion element that expands the pressure chamber having been contracted by the contraction element; a third expansion element that further expands the pressure chamber having been expanded by the second expansion element; and a connection element that connects an end terminal of the second expansion element with a start terminal of the third expansion element at the same potential.