Impact and non-impact personal computer printers can be distinguished from one another. Early impact printers used a key to make an inked impression on the paper for each printed character, operating somewhat like an automatic typewriter. A typical low-cost choice was the dot matrix printer, an impact printer that prints one line at a time on paper.
Inkjet and laser printers are the most popular non-impact printing devices. While the laser printer employs a laser beam reflected from a mirror to attract ink (referred to as toner) to specific paper locations as a sheet rolls over a drum, the inkjet printer sprays ink from an ink cartridge at a very close range to the paper as it rolls by.
Some Types of Printers
Today’s market is filled with a wide range of printer producers, including Canon, Epson, Hewlett-Packard, Xerox, and Lexmark, among many others. There are many printer types available, which we’ll examine shortly. Some types of desktop printers are described here.
An image from a computer file is reproduced on paper by an inkjet printer. The most popular kind of personal printer is this one.
High-speed laser beams are sent over a negatively charged drum to define an image in laser printers, producing excellent prints. Professional environments are where colour laser printers are more frequently encountered.
In terms of printer technology, 3D printers are relatively recent. A physical object is produced via 3D printing from a digital file. Layer after layer of material is added until the print job is finished and the item is complete.
When the paper with a thermochromic coating is passed over a print head made of electrically heated elements, a thermal printer creates an image on the paper in the region where the heated coating turns black. Thermal printing technology, known as a dye-sublimation printer, uses heat to transfer dye to materials.