INKJET RECORDING DEVICE AND INK-DISCHARGE ADJUSTMENT METHOD FOR INKJET RECORDING DEVICE

Provided are an inkjet recording device and an ink-discharge adjustment method for an inkjet recording device that can more effectively suppress reductions in the image quality of images recorded by a long recording means that has a plurality of recording heads. According to the present invention, for each of a plurality of recording heads of a recording means, a setting means establishes settings for adjusting the amount of ink that is discharged by a plurality of nozzle groups that are at the recording heads. On the basis of ink-discharge-amount information for a discharge-amount distribution for ink that is discharged from the nozzle groups on the basis of image data, the setting means performs a first adjustment operation, wherein settings are established such that the variance in representative values for the amount of ink discharged from each nozzle group at the joints between the nozzle groups meets prescribed continuity conditions and such that representative values for the total amount of ink discharged by the plurality of recording heads meet prescribed discharge-amount conditions, and a second adjustment operation, wherein settings are adjusted so as to reduce the difference between maximum and minimum values for the amount of ink discharged by the plurality of recording heads.