| 摘要 |
PURPOSE:To enable a high density printing by a simple arrangement wherein a nozzle head part comprising a nozzle, a pressure chamber and an ink feeding passage are provided in slant. CONSTITUTION:N pcs. of flow passage having identical or similar configurations on a base plate 15 are classified into M pcs. of ink colors to form a set of Y, M, C, B nozzle 11' which is prepared in an identical ink color, and N pcs. of flow passage are spacedly arranged with an equal space P therebetween to constitute a nozzle head part 19. Consequently, the granular conditions for every nozzle 11' becomes equal. Furthermore, since the flow passages of an identical configuration formed on one piece of base plate 15, the structure of the nozzle head part 19 becomes simple. Also, the nozzle head part 19 is slanted for alpha deg. with respect to the sub-scanning direction so that a flow passage pitch P becomes a dot pitch (d) in the normal direction ingredients, thus enabling a high density printing. |
