Inkjet printing equipment has always been an indispensable auxiliary tool in the office due to its unique convenience and speed. However, he was struggling to break through the limitations of factors such as "small format, low speed, poor color image reproducibility, and high requirements for substrates", etc., but he was always constrained by small office buildings and could not play a role in a wider industrial world.
In contrast, in the industrial field, although digital printing technologies such as traditional printing and CTP are enriching various applications in the industrial field, if "light printing" technologies such as inkjet can be introduced, the current specific uses can be changed to a certain extent. "The traditional printing is weak, the digital printing is weak". Fortunately, there are already a number of well-known companies in the industry that have begun to work with this!
The so-called "ink-jet printing" (ink-jet printing) is a non-contact, non-pressure, non-plate printing and copying technology. It has the common characteristics of non-version digital printing, and can realize variable information printing.
The principle is actually similar to that of many digital technologies such as CTP: first, the graphic information stored in the computer is input into the inkjet device, and then through a special device, under the control of the computer, the nozzle sprays mist onto the surface of the substrate The ink droplets in the shape are directly imaged on the surface of the substrate according to the charge effect and become the final printed matter. This is divided into continuous inkjet printing (CIJ) and on-demand inkjet printing (DOD). Continuous: No matter the text or the text, the ink droplets are continuously produced in a flowing manner, and then the image is formed by the electric field deflection, and finally the unnecessary ink droplets are recovered or dispersed. On-demand: Only ink droplets are produced on the printed part. Specially used for printing excellent quality images, suitable for packaging color images, textiles and large format billboards. It is an ideal choice for full-color, high-precision printing. Printing quality is the most important consideration in this way.
On this basis, how to transform its office use into industrial use requires progress in the following areas:
Speed: Inkjet printing can not be considered as the mainstream technology in the printing industry at present, so docking with mainstream offset printing and other models has become the current main application method, that is, the variable data part is completed by inkjet, and it is unchanged by traditional printing. Graphic transfer. The previous process connection usually uses the "multi-group roller" mode, artificially reducing the speed of mainstream printers, but this also causes obvious waste of resources. Therefore, the increase in speed will play a decisive role in improving the efficiency of such variable data printing.
In some companies that produce this kind of product equipment, printers with multiple engines have appeared. Usually, after configuring four engines, up to 160 sheets of B1 pages with a resolution of 720dpi or 400 sheets of ordinary resolution with a resolution of 360dpi can be printed per hour. page. It is understood that at present, this type of printer can be equipped with up to about 20 engines, which will greatly increase its printing speed.
At the same time, the performance of the print head will also become an important factor affecting the speed of inkjet printing. Some materials show that the print speed of high-quality print heads will be about three times the ordinary speed under the same conditions.
Quality: The most important quality indicators for inkjet printing-resolution, and printing speed are basically on the opposite side, at this stage we may be "fish and bear paws can not have both", only in the case of meeting objective requirements Next, choose the best "mass-to-speed ratio", and the two are mutually restricted and related to each other.
Large format: Generally speaking, the printing of less than 850mm × 1200mm format is general printing; and the printing of greater than or equal to 850mm × 1200mm format can be called large format printing.
Now large-format inkjet printing products are everywhere, which shows that it is in a golden period of in-depth development and widespread popularity. Inkjet products have been applied to various fields such as large-scale posters, short-version art reproductions, body advertisements, and the market is showing a rapid growth. The main fields of large-format inkjet printing are as follows.
1. Engineering design industry. Large-format printers have the largest market share in computer-aided design and will continue to grow. The engineering drawing inkjet application mainly represented by CAD has injected vitality into the development of China's large-format inkjet printing market.
2. The field of image output. In this field, the development of large-format printers is the fastest. Applications in this field include indoor and outdoor large-format signboard posters, advertisements, decoration and decoration, and A3 format advertisements. Photo studios often use high-precision inkjet printers to print photos. Multi-variety and small-batch jobs are more suitable for this form of inkjet printing. It can quickly and efficiently solve the market demand for single jobs within 200 copies.
3. Printing industry. In the proofing process of the printing industry, the effect of the inkjet printer is very close to the printing effect and very stable. In many places, this method can be used to perform pre-press output proofing.
After choosing the large format inkjet printing market, the choice of equipment is a problem. To choose inkjet printing equipment and ink system according to the type of product and output, these need to be carefully considered.
Substrate: At present, in various inkjet printing equipment, many of them have too high requirements for the quality of the substrate: the ink and the printing material must be matched correctly, and the quality and condition of the printing material depend on the density, material, and smoothness Degrees and other characteristics. Therefore, it is very important to study whether the quality and characteristics of the printed materials are appropriate to produce high-quality color prints.
Among all the inkjet printing methods, UV printing is recognized as a method with higher compatibility. It is reported that Anapurna, a UV inkjet printer launched by company A, can print on any material, which is also used for inkjet printers. The development of substrates opened a good situation.
If the inkjet printing technology is applied in the industrial field, it may open up new ideas for the current development direction of printing.
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