| 主权项 |
1. A printing apparatus which performs printing by using an ink jet method, and the printing apparatus comprising:
an ink jet head, including a plurality of nozzles aligned in a sub-scanning direction which is orthogonal to a main scanning direction, and each of the plurality of nozzles ejecting a plurality of ink droplets toward a medium while moving in the main scanning direction to draws lines on the medium; a landing position reading unit, which reads one or both of a line width of a line and a landing position by correlating each of the plurality of nozzles which ejects the plurality of ink droplets, and the landing position is a position on the medium where ink droplets are landed; and a landing state determination unit, which determines one or both of whether or not the line width is in a range of a standard which is set in advance and whether or not the landing position is deviated from a normal position which is set in advance with respect to each of the plurality of nozzles which ejects the ink droplets by comparing the landing positions with each other, based on the landing position which is read by using the landing position reading unit, in order to detect ejection abnormality of each of the plurality of nozzles. |
