Cross printing method for CIJ ink-jet printer

Abstract

The invention discloses a cross printing method for a CIJ ink-jet printer, and the method comprises the following steps: S1, generating control data according to to-be-printed image-text data, and transmitting the control data to a printing head, wherein the control data comprises a charging ink droplet number and the charging amount of each ink droplet; S2, enabling a spraying nozzle of the printing head to spray ink droplets at a high speed, enabling a charging electrode to select the ink droplets for charging, and achieving an electric quantity difference n* delta q between each two ink droplets, which are charged sequentially, in each column of a character matrix, wherein n is not less than two, and one delta q is the electric quantity difference between two ink droplets with the shortest distance therebetween on an ink-jet object; S3, enabling each column of ink droplets to be printed on the ink-jet object and to form a column of ink points after passing through a deflection electric field, wherein the cross printing means that there is at least one ink point between ink points which are sequentially printed on the ink-jet object in each column of ink droplets. The method avoids problems of image-text mess and fuzzy during high-speed printing, and improves the quality of high-speed printing.

Description

technical field [0001] The invention relates to the technical field of industrial inkjet printers, in particular to a CIJ inkjet printer cross printing method. Background technique [0002] The inkjet printer is a device that is controlled by software and uses a non-contact method to mark on the product. It is mainly composed of an inkjet coding system and an ink system. The deflection of charged ink dots in the electric field realizes the restoration of characters, which is usually referred to as CIJ inkjet printer. [0003] The printing principle of the continuous inkjet printer is: the ink is ejected from the nozzle under the pressure of the pressure pump. When the ink passes through the nozzle, the piezoelectric crystal rod inside the nozzle vibrates up and down, and the ink is broken into a string by the action of the piezoelectric crystal. Continuous ink droplets with equal spacing and the same size form an ink droplet flow. The ink droplets pass through the charging ...

AI Technical Summary

Problems solved by technology

[0005] To sum up, it can be seen that the step of charging each ink drop in each column of the charging pole is the key to controlling the printing speed and printing quality; The formula for calculating the force F is: F and charge Q 1 , Q 2 It is directly proportional to the distance r and inversely proportional to the distance r. The known charging method is: the charging power of ink droplets arranged in sequence in each column increases or decreases linearly, and the power difference between adjacent ink droplets is a fixed value Δq. During high-speed printing, the relative The distance between adjacent charged ink droplets is very close, and the electric charge difference between adjacent ink droplets is extremely small. Therefore, the interaction force between two charged ink droplets is relatively large, and its relative to the deflection electric field force can no longer be ignored. The deflection process of ink droplets is actually an interaction. The process of the joint action of the force F and the deflection electric field force, obviously, when the interaction force F is large, the ink drop will inevitably deviate from the original deflection track, the printing height will also change, and the printing accuracy is low. In some cases, there are often problems such as confusion and blurring of graphics and text, and the printing quality is extremely poor.

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