Patent attributes
When an actually measured voltage Vsu detected by a voltmeter 58 is within an inspection permissible range, a print head inspection apparatus 50 performs an inspection as whether or not ink has been normally ejected, on the basis of a changes in voltage that occur in an inspection area 52 as a result of ejected ink droplets. On the one hand, when the actually measured voltage Vsu is less than the inspection range, the apparatus increases a relative distance between a nozzle plate 27 and the inspection area 52 by separating the capping member 41 from the print head 24, by then bringing the capping member 41 and the print head 24 into contact, and after a suction pump 45 performs a separated-suction process, by then gradually separating the capping member 41 from the print head 24 until the actually measured voltage Vsu is within the inspection permissible range. Thus, a nozzle inspection as to whether or not the print recording liquid has been normally ejected can be carried out with a stable degree of accuracy.
