There are several different types of printers on the market today, but the inkjet printer is the dominant force. This is largely to do with inkjet printers being the more affordable option while still being able to produce a good quality output.
It may interest you to know that printer manufacturers do not actually make any profit or sometimes very little profit on the printers they sell. At first this probably sounds crazy, but is a well used business model that can be seen in practice in many other industries. This type of business practice was first used by Gillette to sell its razor blades. The reason the printer companies sell my printer at a loss is that they aim to make their profits by selling you the ink for the printer. The printer companies have a huge mark up on the ink cartridges. This also explains why they are so keen to discourage consumers from buying replica ink cartridges.
How they work
The vast majority of home inkjet printers will use a thermal inkjet. Inkjet ink cartridges are pretty ingenious examples of modern technology in action. Without getting too technical lets take a look at how they actually work. Within the ink cartridge will be a series of electrically heated chambers. Ink is dispelled from the ink cartridge as an electric current is passed through the heating elements. This process causes a droplet of ink to be forced from the ink cartridge and onto the paper, with any surplus ink being sucked back into the chamber. This process is replicated many times over at high speed in order to print your chosen documents.
The thermal inkjet method is not the only method used. There are two other designs of called piezoelectric ink jets and continuous ink jet. These designs tend to be seen in more industrial or commercial printers.
Advantages
Ink jet printers are a fantastic invention. They are able to provide consumers with high quality prints at a very reasonable price. Do you remember the old dot matrix and daisywheel printers? If you do you will surely remember the amount of noise they used to make and the standard of print. In comparison ink jet printers are much quieter and also produce much higher quality. You can buy an inkjet printer that will produce photo quality picture prints, something that would have been impossible with a dot matrix!