| 摘要 |
PROBLEM TO BE SOLVED: To form a favorable image by preventing impact deviation of ink caused by transportation air stream even when the impact deviation of ink is influenced by an autogenous airflow.SOLUTION: In an image formation device, when an ink jet density of a nozzle 38 increases, a degree of an autogenous airflow W1 generated between the nozzle 38 and a sheet PA in an ink discharge direction becomes stronger. When an autogenous airflow degree indicating the degree of the autogenous airflow becomes higher, a degree of the ink flowed by transportation air stream W2 generated from an upstream side of a transportation direction to a downstream side in accordance with transportation of the sheet PA becomes weaker, an ink impact position is deviated in the upstream side of the transportation direction. A discharge quantity of the ink from each of the nozzles 38 is controlled by a controller on the basis of the ink jet density. Therefore, in a case that the degree of the discharged ink flowed to the downstream side of the transportation direction by the transportation air stream W2 is changed by influence of the autogenous airflow W1 generated in the ink discharge direction, the deviation of the ink impact position in the transportation direction W2 is prevented. |
