Patent ID: 7314262

Claim:
A liquid ejecting apparatus comprising: a head member having a nozzle, a pressure-changing unit that can cause pressure of liquid in the nozzle to change in such a manner that the liquid is ejected from the nozzle, a level-data setting unit that can set a selected level data from a plurality of level data, based on an ejecting data, a driving-signal generator that can generate a driving signal, a driving-pulse generator that can generate a driving pulse based on the selected level data and the driving signal, a main controller that can cause the pressure-changing unit to operate, based on the driving pulse, and a distance obtaining unit that can obtain a distance between the nozzle of the head and a medium to which the liquid is ejected, wherein the driving signal is a periodical signal including a first pulse-wave capable of ejecting a drop of the liquid having a predetermined volume from the nozzle at a relatively low speed, and a second pulse-wave capable of ejecting a drop of the liquid having the predetermined volume from the nozzle at a relatively high speed, the predetermined volume corresponding to a predetermined level data, the driving-pulse generator is adapted to generate, based on the driving signal, when the selected level data is the predetermined level data: a driving-pulse including only the first pulse-wave when a distance obtained by the distance obtaining unit is not less than a predetermined value, and a driving-pulse including only the second pulse-wave when the distance obtained by the distance obtaining unit is less than the predetermined value, and wherein: the plurality of level data include a small-dot data, a middle-dot data and a large-dot data, the predetermined level data is the middle-dot data, the drop of the liquid having the predetermined volume is a middle-dot drop of the liquid, the driving signal is a periodical signal including a first pulse-wave capable of ejecting the middle-dot drop of the liquid from the nozzle at a relatively low speed, a small pulse-wave capable of ejecting a small-dot drop of the liquid from the nozzle, and a second pulse-wave capable of ejecting the middle-dot drop of the liquid from the nozzle at a relatively high speed, in that order, the driving-pulse generator is adapted to generate, based on the driving signal: a driving-pulse including only the small pulse-wave when the selected level data is the small-dot data, a driving-pulse including the first pulse-wave and the second pulse-wave when the selected level data is the large-dot data, a driving-pulse including only the first pulse-wave when the selected level data is the middle-dot data and the distance obtained by the distance obtaining unit is not less than the predetermined value, and a driving-pulse including only the second pulse-wave when the selected level data is the middle-dot data and the distance obtained by the distance obtaining unit is less than the predetermined value.