Whether you are a print professional, distributor or even a normal user for printing with its home or office applications; we will give you an overview about the inkjet technology, which is the most progressing printing technology for the recent decade; many applications and printing techniques, has been developed or replaced by inkjet technology.
Although inkjet technology has been raised up since the 1950s in some of specialty printing like coding & variable data printing VDP, the effect of the technology on a wide range of industrial applications is only now becoming real.
That’s why everyone related to printing industry should have big idea about this amazing technology; this article will cover the following:
Inkjet printing is a non-impact printing technology in which Pico liter Drops (10-12 L) are jetted from a small capillary orifice usually less than 100 micron ( ranged 30-40 micron ) diameter onto a designated position on a substrate such as inkjet paper.
Basically, on the opposite of conventional printing technologies, the inkjet is non-impact printing technology; it does not require a master or a plate to carry the image information or to deliver the ink onto the substrate. In the inkjet process the ink is jetted directly onto the substrate.
Although inkjet technology seems to be easy in theory, but in the real practice it is very challenging, that’s because successful implementation of the technology is very complex. The jetted ink dots are smaller than the diameter of a human hair (70 microns), and they must be positioned accurately to achieve resolutions as fine as 1440×1440 dots per inch (dpi). This accuracy requires diversified skills; a combination of careful design, implementation and operation across physics, fluid mechanics, chemistry and engineering.
That’s why we at Edge Colours are continuously giving attention to Research & Development activities and we put big investment in lab equipment for both R&D and quality assurance purposes to be able to provide our customers with reliable hassle-free inks for their applications.
Images for our lab equipment
As showed in the next diagram, Inkjet technology can be classified to two main categories:
The ink used for ink jet printing is usually liquid. An alternative, however, is hot-melt inks which are liquefied by heating. The ink is jetted onto the substrate where it dried or cured according to the chemical base of the ink.
Each of the above mentioned categories used for different applications, in general CIJ continuous inkjet is implemented in coding applications and DOD drop on demand is implemented in graphic art & other industrial applications too.
Any inkjet printer should have a group of main components in order to be able to do its function, these components are being different according to its Specification, complexity & performance, but here we’ll mention the basic components:
Any defect or miss-synchronization between all this components will affect the jetting performance and final print quality.
Inkjet printing machines have different structure to fit different applications and to handle wide range of substrates; here is a brief view on the most common inkjet machine structures:
This is not all applications but this is just examples about how inkjet technology dominated some applications and created new ones by its unique characteristics. And as we see inkjet technology replaced some conventional applications like silk screen and took big share of other systems.