Liquid ejecting apparatus, and method for maintaining and recovering ejection performance of the same
AssigneeCanon Kabushiki Kaisha
InventorToshimitsu Danzuka
Life of this patent
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Abstract
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.
Claims15
A liquid ejecting apparatus comprising:
- a plurality of liquid ejection openings to which liquid reserved in the same liquid reservoir means is supplied;
- ejection performance maintaining and recovering means for forcibly discharging the liquid from liquid ejection openings selected from the plurality of liquid ejection openings;
- and
- control means for controlling the ejection performance maintaining and recovering means in accordance with number of selected liquid ejection openings so as to substantially equalize an amount of ink discharged from each of the liquid ejection openings, regardless of the number of selected liquid ejection openings.
A method for maintaining and recovering ejection performance of an apparatus having a plurality of liquid ejection openings to which liquid reserved in the same liquid reservoir means is supplied, said method comprising the steps of:
- ejection performance maintaining and recovering step for performing ejection performance maintaining and recovering operation which forcibly discharges the liquid from liquid ejection openings selected from the plurality of liquid ejection openings;
- and
- control step for controlling the ejection performance maintaining and recovering operation in accordance with number of selected liquid ejection openings so as to substantially equalize an amount of ink discharged from each of the liquid ejection openings, regardless of the number of selected liquid ejection openings.
Dependencies are inferred from the claim text.