Comparison of inkjet printing and screen printing (1)

Ink-jet printing is a non-contact, pressure-free, non-printing, copy-printing technology. It has the common features of digital printing without printing, enabling variable information printing.

The screen printing plate is in the form of a mesh. During printing, the ink on the plate is printed on the plate through the hole portion of the plate under the pressure of the squeegee and printed on the substrate.

First, two kinds of printing methods

1. Inkjet printing

(1) The principle of inkjet printing

There are many kinds of inkjet printing methods. The basic principle is to input the graphic information stored in the computer into the inkjet printer first, and then spray the fog from the nozzle onto the surface of the substrate under the control of the computer through a special device. The droplets form directly on the surface of the substrate based on the effect of charge and become the final print.

(2) Classification of Inkjet Printing

1 by inkjet system classification

The basic principle of ink-jet printing is to generate small ink droplets and guide them to the set position. According to the different inkjet systems, it can be divided into continuous and on-demand two.

Continuous Ink Jet Printing (CIJ), whether patterned or non-printed, continuously generates ink droplets in a continuous flow pattern, then transfers the images by electric field deflection, and finally recovers or disperses non-printed ink droplets. .

On-demand inkjet printing (DOD) produces ink droplets only in the printed portion. Specially used for printing excellent quality images, suitable for packaging color pictures, textiles and large-format billboards, is an ideal choice for full-color, high-precision printing. Print quality is its most important consideration.

2 according to the printing color classification

Inkjet printing can be divided into black and white ink jet printing and color ink jet printing according to its printing color. Single ink for black and white ink jet printing, machine structure and ink system are relatively simple, and color ink jet printing is relatively complicated.

2. screen printing

(1) The principle of screen printing

In modern screen printing technology, a screen printing plate is produced by means of photoengraving using a photosensitive material (the screen holes in the graphic portion of the screen plate are through holes, and the screen holes in the graphic portion are not blocked. ). During the printing, the squeegee presses the ink through the mesh part of the graphic part and transfers it to the printing material to form the same image as the original.

(2) Screen printing composition and equipment characteristics

Screen printing consists of five major elements: screen printing plates, squeegee blades, inks, printing stations, and substrates. Screen printing equipment is simple, easy to operate, printing, plate making simple and low cost, strong adaptability. Screen printing a wide range of applications, there are many common printed materials, such as color paintings, posters, business cards, binding cover, product tags and dyeing textiles.

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