Inkjet printing head

Abstract

The invention discloses an inkjet printing head. When an inkjet printing head is used to print a covering film, the printing of a fine covering film edge, a sufficient thickness and a convex three-dimensional surface is needed. An existing nozzle has a single vertical spraying direction, the same spraying amount of spraying holes and the limited spraying adjustment range of the spraying holes, and multiple requirements in printing the covering film can not be satisfied at the same time. The invention provides the following solution that an inkjet printing head comprises spraying holes with different spraying amounts and different ink drop spraying directions, different spraying holes are in cooperated working, a small ink drop is used for printing a smooth edge, a large ink drop is used for printing the thickness, and an ink drop which is sprayed in an inclined way is used for printing a side face.

Description

technical field

[0001] The present invention relates to an inkjet print head, and more particularly to an ink jet hole on the inkjet print head. technical background

[0002] Inkjet printing has been widely used as a printing method for images and texts. With the development of inkjet printhead technology, the printing efficiency of inkjet printheads has been continuously improved, the printing effect has become more and more delicate, and the printing colors have become more and more abundant. ; Inkjet printing can also be applied to thin film printing and three-dimensional printing. However, the current inkjet printing head has a single ink ejection hole: the ejection direction of ink droplets is a single direction perpendicular to the printing surface, and the ink ejection amount of the ink ejection holes on the same print head is the same. Although the actual ink ejection volume can be adjusted during printing, the adjustment range is limited. In order to further incre...

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