In recent years, inkjet printing is advancing towards almost all printing fields, and its printing quality is getting better and better.
The so-called "ink-jet printing" (ink-jetprinting) is a non-contact, non-pressure, non-printing printing technology. It has the common characteristics of non-version digital printing, and can realize variable information printing.
The principle of inkjet printing is that the graphic information stored in the electronic computer is first input into the Inkjet Printer, and then through a special device, under the control of the electronic computer, the nozzle sprays misty ink droplets on the surface of the substrate according to the charge The effect is directly imaged on the surface of the substrate and becomes the final print.
1 Classification of inkjet printing
(1) Classification by inkjet system
The basic principle of inkjet printing is to first generate small ink droplets and then guide them to the set position. According to the difference of inkjet system, it can be divided into continuous type and on-demand type.
The so-called continuous inkjet printing (CIJ), whether printed or non-printed, is to continuously generate ink droplets in a flowing manner, and then form an image by electric field deflection transfer, and finally recover the non-printed ink droplets or dispersion.
In so-called on-demand inkjet printing (DOD), ink droplets are generated only in the printed part. Dedicated to 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, and printing quality is its most important consideration.
(2) Classification by printing color
According to its printing color, inkjet printing can be divided into black and white inkjet printing and color inkjet printing. Black and white inkjet printing uses a single ink, the machine structure and ink system are relatively simple, and color inkjet printing is relatively more complicated.
2 Advantages and characteristics of inkjet printing
(1) Inkjet printing is a fully digital printing, which completely deviates from the tedious procedures of traditional printing processes. It does not require high color overprinting and trapping. There is no need to consider registration accuracy, the operation preparation time is short, and the response to the market is fast. The production cycle is short, and the production of digital proofs and short-run jobs can be completed with very high time efficiency and cost efficiency.
(2) Realize variable data printing and customized printing, and the image information can be changed at any time to meet the user's short-run printing jobs and personalized printing needs, such as: personal albums, product descriptions, materials, test products, packaging samples, etc.
(3) One sheet printing, reduce waste, more flexible printing services, usually have an advantage within a thousand prints.
(4) The digital features make it easier to introduce digital integration technologies such as digital asset management, automated workflow and color management.
(5) It can realize off-site printing and provide remote printing service through Internet transmission, which is especially suitable for quick printing of cross-regional chain operation.
(6) Most inkjet printing technologies are non-contact printing, which can be replicated on a variety of printing materials, such as variable inkjet printing on various commodity production lines.
(7) Digital web inkjet printing equipment is not limited by the length of the paper, and can realize the reproduction of large-format and panoramic works.
