| 摘要 |
A print unit (fluid droplet ejection head 4) prints by ejecting fluid droplets from a plurality of ejection nozzles N while moving in a primary scanning direction relative to a print medium. An ejection inspection unit (maintenance mechanism 9) performs an ejection inspection that inspects fluid droplet ejection by a group of target nozzles, which are part of an ejection nozzle subset obtained by dividing the plurality of ejection nozzles N according to the number of nozzles required to form the smallest printing width in the secondary scanning direction. A control unit controls the print unit and the ejection inspection unit, and changes the group of target nozzles in the ejection nozzle subset and performs the ejection inspection each time a specific amount of printing is completed. |
