| 摘要 |
A moving distance is determined based on the time required by a deposited fine droplet to reach a target dot diameter and the velocity at which a movable stage is moved. An aperture is located at a position spaced from a nozzle, which ejects a droplet, by a distance equal to the moving distance. A light-transmissive liquid filling the aperture functions as a liquid lens for focusing a laser beam on a blot of a droplet. The light-transmissive liquid discharged from the aperture is used to clean a nozzle surface of an ejection head.
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