A printer is a device that transfers data from a computer to a physical medium (paper or film). There are many types of printers, and they are used for a wide variety of purposes.
3D Printing
A 3D printer creates objects from a digital file in a layer-by-layer process. It is often used for prototyping in areas such as archaeology, aerospace engineering, information systems, dentistry and biotechnology.
Inkjet printing
Inkjet printers use a solid ink that is made from phase-change or hot-melt chemicals. Inkjet printers are very fast and can produce high-quality results with text and images.
Laser printing
A laser printer is a non-impact printer that prints by striking an ink ribbon against the media. It is typically faster than dot matrix or daisy-wheel printers and quieter.
Plotters
A plotter is a type of printer that allows users to cut different shapes out of paper, steel, plastic, aluminum and other materials. They are often used for advertising, sign-making, bill board and vehicle graphics.
Steganography
Ink printers are also capable of a form of steganography, which is the “hiding” of encoded information within an image. This is particularly useful for personalizing pre-printed cards, such as customer and membership cards, sports tickets and public transportation season tickets.
Printers can also be used to encrypt information on paper, such as security documents and legal paperwork. Printed documents can include an encrypted serial number, date and time stamp.
A printer can be connected to a computer by wired connections, such as USB cables, or via Wi-Fi. They can also be used to print directly from a digital camera or a mobile phone.
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