| 摘要 |
<p>A monitoring arrangement for a liquid ejection apparatus (100) capable of ejecting liquid (L) in a pattern on an interior surface (41) of a tank (40), the monitoring arrangement comprising a sensor unit that generates a signal (Ss) indicative of liquid (L) coming into contact with the interior surface (41) of the tank (40), and a processing unit (30) configured to: receive the signal (Ss); retrieve a reference property (T ref , t ref , A ref , f ref ) that is indicative of liquid (L) coming into contact with the interior surface (41); register, during a measuring period (”T2) when the fluid nozzle (112) ejects liquid (L), at least one current property (T 2 , t 2 , A 2 , f 2 ) of the signal (Ss); compare the current property with the reference property; and initiate, if the current property deviates from the reference property beyond a predetermined level, a message indicative of the deviation.</p> |
