A droplet ejection apparatus includes ejection failure detecting means for detecting an ejection failure, counting means for counting the number of ejection failures, and droplet receptor transporting means which carry out discharge and feed of the droplet receptor. 1 wt-% to 5 wt-%, based on the resin solids, of at least one polymer having an acid value of 20 to 100 mg KOHg and a content of lateral andor terminal aliphatic C5-C14-hydrocarbon radicals of 40 wt-% to 80 wt-%. A filter minimizes the first undesired frequency components of the first signal.