| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an ink jet recorder capable of performing image processing for correcting concentration increase following to ink condensation while reflecting degree for diluting ink condensation by a sheet surface preliminary discharge, while performing the sheet surface preliminary discharge.SOLUTION: Information D about degree of ink condensation common to plural nozzles for performing recording to a unit area, is managed based on image data I of a multiple value corresponding to the unit area of the recording medium, and correction processing of the image data of the multiple value for reducing concentration unevenness is performed based on the information. At the time, the information is updated for every unit area by reflecting the image data of multiple value, and discharge frequency of the sheet surface preliminary discharge.</p> |
