Patent ID: 7621613

Claim:
An ink-jet recording apparatus which includes an ink-jet head and performs recording by discharging an ink onto a recording-objective medium by driving an actuator, the apparatus comprising: a temperature sensor which detects a temperature of the ink; a drive voltage-determining section which determines a drive voltage amplitude for driving the actuator, according to the temperature of the ink detected by the temperature sensor, and which determines a new drive voltage amplitude when the temperature of the ink is changed; and a driving section which drives the actuator by one of the drive voltage amplitude and the new drive voltage amplitude determined by the drive voltage-determining section; wherein the drive voltage-determining section calculates one of a difference between a first temperature detected at a first timing and a second temperature detected at a second timing and a difference between a first drive voltage amplitude at the first timing determined based on the first temperature and a temporary drive voltage amplitude set based on the second temperature, and the drive voltage-determining section determines a second drive voltage amplitude at the second timing which directly corresponds to the calculated difference; wherein when the difference is not more than a predetermined value, the drive voltage-determining section determines the temporary drive voltage amplitude to be the second drive voltage amplitude at the second timing; and when the difference is greater than the predetermined value, the drive voltage-determining section determines a drive voltage amplitude, which is made to be close, from the first drive voltage amplitude at the first timing, to the temporary drive voltage amplitude by only a value smaller than a difference voltage between the first drive voltage amplitude at the first timing and the temporary drive voltage amplitude, to be the second drive voltage amplitude at the second timing.