Patent ID: 7427120

Claim:
A recording-density control method of an image recording apparatus for performing image recording by arranging, in a direction approximately orthogonal to the direction in which a recording medium is carried, a nozzle array component comprising a plurality of nozzles for discharging uniform-color ink, comprising: performing test recording on the recording medium by an N number (where N is an integer in which N≧3) of the nozzle array components arranged in a plural number; determining, as a control of a second nozzle array component adjacent to a first nozzle array component, and on the basis of the first nozzle array component serving as a reference in the N number of nozzle array components, a driving parameter for the driving of the second nozzle array component from a recording density of the recording medium that is used for the test recording by nozzles located at contact edges of the first and second nozzle array components; estimating a recording density of an edge of an n th nozzle array component (where n is an integer in which n≧2) that is in contact with the n+1 th nozzle array component side among the N number of nozzle array components driven by the determined driving parameter; and determining a driving parameter for driving the n+1 th nozzle array component on a basis of the estimated recording density of the edge.