Inkjet printing head mechanism, inkjet printing equipment, and ink droplet ejection angle correction method

Abstract

The invention discloses an inkjet printing head mechanism, inkjet printing equipment and an ink droplet ejection angle correction method. The inkjet printing head mechanism comprises an inkjet head and a temperature control part, wherein the inkjet head is provided with an inkjet cavity and a nozzle communicated with the inkjet cavity, and the temperature control part is arranged at the position,close to the nozzle, of the inkjet head and is configured to form a temperature difference between the front end position and the rear end position of the nozzle in the printing direction. The inkjetprinting head mechanism can quantitatively correct the emitting angle of ink droplets, so that the inkjet printing precision is improved. The inkjet printing equipment comprises a printing equipment main body and the inkjet printing head mechanism, wherein the inkjet printing head mechanism is arranged on the printing equipment main body. The ink droplet ejection angle correction method is simple,and high in adjustment accuracy.

Description

technical field [0001] The invention relates to the technical field of inkjet printing, in particular to an inkjet printing head mechanism, an inkjet printing device and a method for correcting an ink droplet exit angle. Background technique [0002] Inkjet printing technology is a non-contact, high-efficiency, and modern manufacturing technology that enables precise material deposition. With the continuous development of inkjet printing technology, its application has expanded from the pure printing field to frontier fields such as electronic manufacturing, life science and additive manufacturing. The most commonly used inkjet printing technology is drop-on-demand (DOD) inkjet printing technology, such as figure 1 As shown, by inputting a waveform signal (Waveform, essentially a pulse signal) into the piezoelectric material, the piezoelectric material 100 is deformed, thereby extruding the ink in the ink ejection chamber from the nozzle 200 to form micron-sized ink droplet...

AI Technical Summary

Problems solved by technology

In order to reduce the impact of the difference in the exit angle between the nozzles on the actual printing effect, the distance between the nozzle and the substrate is usually reduced to about 0.5mm, but even in this case, the difference in the exit angle of 1° will cause the print to be more than 8.7μm The position deviation of the landing point

This deviation of landing position has a great influence on the actual printing effect. For example, when inkjet printing high-resolution display panels, a deviation of 8.7 μm of landing position is enough to cause various defects such as color mixing and uneven display.

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