Line scanning type ink jet recording device capable of finely and individually controlling ink ejection from each nozzle

The ink jet recording device comprising:

• a head formed with a plurality of nozzles;
• a converting unit that converts recording data into driving data that defines driving pulses of corresponding ones of the plurality of nozzles;
• a feed unit that feeds a recording medium in a first direction;
• an ejection element provided to each one of the plurality of nozzles for ejecting an ink droplet from the corresponding nozzle onto the recording medium in response to the driving data while the feed unit is feeding the recording medium in the first direction;
• and
• a memory that stores nozzle profile data including waveform data and timing data for each of the plurality of nozzles, the waveform data and the timing data indicating a waveform and a generating timing, respectively, of the driving data for each one of the plurality of nozzles;
• wherein
• the converting unit converts the recording data into the driving data based on the nozzle profile data, the driving data is a sequence of pulse data, each pulse data corresponding to one of the plurality of nozzles;
• a designating unit that designates a target ink amount of the ink droplet and a target impact position on the recording medium on which the ink droplet impacts with respect to both the first direction and a second direction substantially perpendicular to the first direction;
• a measuring unit that includes:
• a first measuring unit that measures a first distance between the target impact position and an actual impact position on the recording medium where the ink droplet has impacted with respect to the first direction;
• and
• a second measuring unit that measures a second distance between the target impact position and the actual impact position with respect to the second direction;
• and
• an updating unit that updates the nozzle profile data based on the target impact position, the first distance, and the second distance.