Liquid ejection device and liquid ejection method for shaping three-dimensional shaped object, and having ultraviolet generator uniformly irradiate ultraviolet light to the range in which nozzle row of inkjet heads exists

摘要

A liquid ejection device that ejects an ultraviolet-curable liquid includes an inkjet head, which is an ejection head that ejects the ultraviolet-curable liquid; a scanning driver that causes the inkjet head to perform a main scan; an ultraviolet generator; and a light source driver; where the ultraviolet generator irradiates the ultraviolet while moving in the main scanning direction together with the inkjet head; the ultraviolet generator includes a plurality of UV LED elements; the plurality of UV LED elements are arranged such that a light emitting range overlaps a range of the nozzle row in a sub scanning direction; and the light source driver drives the plurality of UV LED elements such that an illuminance at an end portion in the sub scanning direction is larger than an illuminance at a central portion in the light emitting range.