device is the printer handles paper or similar material a document or image you get in the computer.
According to the technology they use can be classified into:
Matrix
These printers have been used for many years as the first technology was obtained from the evolution of the typewriter. Today has been replaced in many settings, but still useful, and there are cases in which the other technologies, most modern, can not be replaced. Are the only ones allowed to use tracing paper for printed copy.
The cost per copy is inexpensive, and easy to implement continuous, in other points it is now surpassed by any other inkjet or laser printer.
As the number of needles carrying the print head, there are 8 and 24 pin, logically the higher this number will get better quality for printing. They are very noisy because the impression is achieved by striking the hands on the ink ribbon. For all these reasons its use is almost exclusive to large print text and listed companies and is still used also in small ticket printers in supermarkets or similar
Inkjet
The most widespread today in the home, due to its high quality and low cost.
Its operation is based on the expulsion of liquid ink droplets through a nozzle, which impact on the role of the points necessary for the performance of graphics and text. According
the printer model you can use a cartridge with ink colors or be independent, be independent means less spending on consumables.
This type of printer can print high speeds and are compared with other, quite silent.
Laser technology is similar to that used copier machines, but more evolved, the material used for printing is a very fine powder, called toner, which passes through a roller, which has previously been magnetized in areas that contain the printed, is passed to a high temperature above the paper, and by the action of heat that melts and permeates. These printers
often used in business, the machine itself is more expensive than inkjet, but the copy itself out due to more economic autonomy, or number of copies that are able to launch compared to ink . They are the fastest on the market when we talk about multiple copies, the paste over the ink is that expensive color laser, which can only be used foil-type paper (in the ink are special papers, also called photographic paper , which enhances the impression largely). Finally the great advantage when using it as a working printer, is that high-end models coupled internal hard drives that are used to buffer, which can launched many different copies and networking of different users if you get to saturate the buffer as might happen in the inkjet. Thermal
Such printers are typically used for printing of stickers, often are used in bars, restaurants and retail establishments to print the ticket.
The way these printers work is such a sticker or paper burning, which has thermal characteristics at the desired point to form letters or pictures (similar to do the lasers, but only similar). The only maintenance cost is zero (if we count the paper), and not using any type of consumable or ink or anything similar, only one piece which is what heats and burns the paper, which must be kept clean, the service life of these printers is very long, so for that specific mission is the best option .
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