Inkjet recording system and inkjet recording method

An inkjet recording system which records an image using an inkjet recording apparatus that includes a recording head in which a plurality of nozzles capable of discharging ink droplets forms a plurality of nozzle arrays in a predetermined direction, and records an image on a recording medium by discharging the ink droplets from the plurality of nozzle arrays based on recording data in which input image data is converted so as to correspond to each of the plurality of nozzle arrays, while moving the recording head in a direction which intersects the predetermined direction, the inkjet recording system comprising:

• a separation unit configured to obtain separated data, which corresponds to each of the plurality of nozzle arrays, from the input image data;
• a gradation correction unit configured to perform gradation correction by one-dimensional conversion on the separated data obtained by the separation unit;
• and
• a quantization unit configured to quantize the data on which the gradation correction is performed by the gradation correction unit to generate the recording data,
• wherein the separation unit obtains the separated data so that first separated data and second separated data corresponding to at least a pair of nozzle arrays for adjusting an effect of an air current have a same value, and the gradation correction unit performs different gradation correction on the first separated data and the second separated data which have the same value.