| 摘要 |
PROBLEM TO BE SOLVED: To provide a small-sized module configured of a detection electrode and a determination portion. SOLUTION: The ejection examination apparatus includes: a head that ejects a liquid form a nozzle; the detection electrode that faces the nozzle with a predetermined interval between the detection electrode and the nozzle; a power source that sets the detection electrode to a predetermined potential; a determination portion that detects a potential change in the detection electrode arising due to ejection of the liquid from the nozzle and determines a nozzle in the head that does not eject the liquid based on the potential change in the detection electrode; and a cap portion that contacts the head when printing is not performed and that houses the detection electrode and the determination portion sealed by an insulator. COPYRIGHT: (C)2011,JPO&INPIT
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