MAINTENANCE METHOD OF LIQUID EJECTION PRINTING DEVICE
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United States of America Patent
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Mar 16, 2017
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Mar 18, 2016
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Abstract
A maintenance method of a liquid ejection printing device includes: forming a lump of trapped liquid in a nozzle plate to cover a nozzle hole and a surrounding of the nozzle hole with ink while a printing operation on a printing medium is performed and the liquid is not ejected; and suctioning the lump of trapped liquid into an ejection channel after the forming of the lump of trapped liquid.
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