A printer is a hardware output device that prints a hard copy of text files, images or other documents from a computer by using ink. It is a device that can be used for personal and commercial purposes. It can also be used to print various materials such as paper, vinyl or fabric.
The print head is the most important part of the printer, which has the job of picking up the ink from the cartridges and placing it on the surface of the paper. The ink is spread in the correct pattern to give a clear and precise print. The printers are of different types and sizes. The choice of a printer depends on the type of document to be printed.
Most modern printers are laser or inkjet, with some having a built-in scanner and copier. The choice of the printing technology has a direct impact on the cost, speed, quality and noise generated by the printer. In addition, some printers cannot be used for certain types of physical media.
Traditional impact printers use a print head that contains pins which sit above an ink ribbon and are struck to produce letters and images (like a typewriter). In contrast, non-impact printers do not physically touch the card; instead, the print-head “draws” a negatively-charged shape on a revolving drum coated with a positively charged photoreceptor. A mirror then reflects the image from the photoreceptor to the paper.
Most printers require special drivers to be installed on a computer in order for the machine to work correctly. These drivers convert print data from a general purpose format to a device-specific one that the printer hardware can understand. However, recent models can connect to your wireless network and operate on their own without the need for a computer.
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