| CPC B41J 2/04588 (2013.01) [B41J 2/04541 (2013.01); B41J 2/04563 (2013.01); B41J 2/04571 (2013.01); B41J 2/04581 (2013.01); B41J 2/04596 (2013.01); B41J 2/14233 (2013.01); B41J 2002/14354 (2013.01); B41J 2002/14491 (2013.01)] | 10 Claims |
|
1. A liquid ejecting apparatus, comprising:
a plurality of ejecting portions each including a nozzle from which droplet ejects, a pressure compartment that is in communication with the nozzle, and a drive element; and
a signal generation unit that is configured to generate, as a drive signal of the drive element, a signal for ejecting a plurality of liquid droplets from the nozzle such that the liquid droplets merge together before landing onto a medium, wherein
the drive signal includes
a plurality of drive waveforms for causing pressure changes in a liquid present inside the pressure compartment, and
a first connection waveform that is continuous from a second-to-last drive waveform and continuous to a last drive waveform among the plurality of drive waveforms and along which a potential of the drive signal is kept at a reference level,
each of the plurality of drive waveforms includes
an expansion waveform along which the potential of the drive signal changes from the reference level such that capacity of the pressure compartment expands, and
a contraction waveform along which the potential of the drive signal changes so as to eject a liquid droplet from the nozzle by causing the capacity of the pressure compartment expanded by the expansion waveform to contract,
pressure changes caused by the contraction waveform of the last drive waveform in the liquid present inside the pressure compartment are larger than pressure changes caused by the contraction waveform of the second-to-last drive waveform in the liquid present inside the pressure compartment, and
a period of the first connection waveform is 0.8 or more times as long as a natural vibration cycle of the ejecting portion.
|