| abstract |
PROBLEM TO BE SOLVED: To provide a configuration in which an ejection accuracy is not lowered on an ejection port forming surface in an inkjet recording head having an ejection part capable of ejecting by exchanging a first ink and a second ink having different characteristics. In consideration of suitability for not only each of the first ink and the second ink but also the mixed ink, it is possible to select whether the ejection port forming surface is a non-water repellent surface or a water repellent surface. To do. For example, when the photo black ink and the mat black ink are exchanged and used, the discharge port forming surface is set as the non-water-repellent surface 1001. [Selection] FIG. |