To provide a color filter manufacturing device in which the head unit can be easily replaced and the drawing accuracy is high.

The color filter manufacturing device for manufacturing a color filter by discharging coloring agents while making a plurality of ink-jet heads scan relatively to a light transmissive substrate, and forming side by side a plurality of filter elements colored with the coloring agents on the substrate is so constituted that a plurality of the heads is unitized and attached to the manufacturing device main body by a holding mechanism, a reference surface position to mount the head unit thereon is detected from the reference surface of the holding mechanism, and the posture of the head unit is detected and corrected.