Types of printers: A printer is a device that accepts text and graphics from a computer and transfers the information to paper. in other words, a Printer is an output device that transfers information to paper-called hardcopy.
In terms of the technology utilized, printers fall into two basic types.
Non-impact printers use magnetic, electronic, thermal, chemical, optical, inkjet, or laser technology to give output on paper. They cannot produce carbon copies. they are called quit printers.
Examples:
Non-impact printers include laser printers, inkjet printers, etc.
Inkjet Printer: Inkjet printers spray on a sheet of paper, producing high text and graphics.
Laser Printer: Laser printers use the same technology as photocopier machines. Laser printers produce high-quality text and graphics.
LCD & LED Printer: Similar to a laser printer, but uses liquid crystals or light-emitting diodes rather than a laser to produce an image on the drum.
Thermal Printer: An inexpensive printer that works by pushing heated pins against heat-sensitive paper. thermal printers are widely used in calculators and fax machines.
Printers are also classified by three following characteristics.
Quality of Print: the output produced by printers is said to be either better quality (as good as a typewriter), near better quality, or draft quality. only daisy wheel, inkjet, and laserjet printers produce better quality type. some dot-matrix printers claim better quality print, but if you look closely, you can see the difference.
Speed: Measured in characters per second (cps) or pages per minute (ppm), the speed of printers varies widely. if you do a lot of printing, the speed of the printer is important.
Graphics: Some printers (daisy-wheel and line printers) can print only text. Other printers can print both text and graphics.
Fonts: Some printers, notably dot-matrix printers, are limited to one or a few fonts. In contrast, laser and ink-jet printers are capable of printing an almost unlimited variety of fonts.
Color:
Resolution: printer resolution (the sharpness of text and images on paper) is in dots per inch (dpi) Most inexpensive printers provide sufficient resolution most purposes 600 dpi.
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