A printer is an electronic device that accepts text files and images from a computer and prints them to flat media such as paper in various sizes. It can be connected directly to the computer or indirectly via a network. The most common type of printer is a laser or inkjet printer.
Resolution: How sharp a printed image is, typically measured in dots per inch (dpi). High-resolution printers produce clearer, more detailed documents.
Printing speed: How fast the printer prints pages in a minute (ppm). More sophisticated and expensive printers can print much faster than inexpensive models.
Ink cartridges or toner: The printing medium used by laser printers, inkjets and some dot-matrix printers. These can be bought in sets of black, cyan, magenta and yellow inks or as separate monochrome solid ink cartridges. They must be replaced after a certain number of printouts.
Paper type: The type and weight of paper a printer uses, which can make a big difference in print quality and appearance. Buying the right kind of paper can also save money in the long run by reducing waste and increasing print yield.
Color: How many colors a printer can print. Most modern printers can print in both black and white, but some require special color ink cartridges or toners.
Printing technology: The method a printer uses to create the image on the paper, such as dot matrix, laser, inkjet, or solid-ink. Solid-ink printers use a heater that melts a wax, similar to a crayon. The melted wax is then projected onto the paper to form the characters or images.
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