The ink jet printers are one of the most widely worldwide used printing technologies thanks to its flexibility, performance and low operating cost and end user price.
These characteristics determine that these devices are present in all areas where there is a computer, both at home and in the office and industry. This article looks at the basics of its operation.
The printers use inkjet systems are equipped with a print head with tiny holes throwing ink drops, led by a program that determines how many ink drops and when should be released.
The mixture is important for the formation of color, and it is why color ink jet cartridges usually have three colors (cyan, magenta and yellow) besides black, forming all colors from the mixture of these four inks.
The photo-quality printers can work with up to 12 colors (light magenta, cyan, light black, dark blue, orange, red and green among others) to achieve greater fidelity in color gradations. The fidelity of the image depends the technology used and the quality of the ink.
Bubble jet or thermal
In this technology, the printer heats small amounts of ink at a temperature of about 500° C. With warming a bubble is formed and forces ink droplets leaving the nozzles. The process takes about 20 millionths for each drop formed.
That is the system used by manufacturers such as Hewlett-Packard, Lexmark, Xerox and Canon. The mechanism is in the ink cartridge, making the value of the cartridge is more expensive, but less maintenance and use of all content, because it is under pressure. The resolution is good, and has an optimal cost / benefit ratio.
System used by Epson, uses a piezoelectric crystal that changes shape with electricity. Thus, the crystal generates sufficient pressure to expel a small drop of ink, very small, reaching very high resolutions, with almost imperceptible gradations of color.
The printing mechanism is in the printer cartridges, being the cartridges just ink reserves, but with an ink flow based on suction. This system accept dye inks or pigmented base. Its resolution is optimal, but has the disadvantage that the heads may become blocked if that is not used regularly.
They are soluble molecules in a base colored ink forming a true solution, completely homogeneous and stable. They are fairly inexpensive, and are used both as original cartridges recharged, its durability is average and it is not waterproof.
Are insoluble colored particles that are dispersed, usually by additives, so that they remain almost stabilized and homogeneous suspension. Epson and other manufacturers to use in their original cartridges.
The definition of colors is greater than the dye ink, and also durability, used papers with good quality becomes higher the 10 years.
Because of its high degree of water resistance, it is also used in transfer papers, widely used for printing t-shirts, shirts and other fabrics.
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