| 摘要 |
In the ejection performance maintaining and recovering processing performed to a plurality of liquid ejection openings to which liquid reserved in the same liquid reservoir is supplied, even if the number of liquid ejection openings for which the maintaining and recovering processing is to be simultaneously performed changes, the ejection performance is maintained and recovered by discharging a proper amount of liquid from each of the liquid ejection openings, and the amount of liquid consumed in the ejection performance maintaining and recovering processing is reduced. An amount of liquid discharged from each of liquid ejection openings is substantially equalized, regardless of the number of liquid ejection openings to be processed.
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