There are two types of printers that produce the correspondence, flyers, invoices, and other documents on which businesses rely: impact printers and non-impact printers. Until the 1990s, the vast majority of printers in use were impact type, which produced text on paper by striking formed metal characters against an inked ribbon. Non-impact printing technologies such as inkjet and laser have transformed the industry,providing users with high-quality pages while minimising noise.
Non-impact printers, unlike impact printers, do not use inked ribbons. In thermal printing, a mechanism rapidly heats tiny spots on specially treated paper, turning the paper black. There is no ink used in theprocess; only paper is used. A laser printer works by bonding toner particles to paper one page at a time. Inkjet printers spray tiny droplets of ink directly onto the paper in precise patterns.
Replaceable cartridges for inkjet and laser printers carry ink and toner powder, respectively. Color printers use a set of cartridges, one for black, one for cyan, one for magenta, and one for yellow. These cartridges are typically disposable items intended to be used only once, though some services refill and recondition them. These cartridges account for a sizable portion of the printer’s total technology. Many precision moving parts can be found in an inkjet cartridge, for example. You replace the cartridge before its parts wear out, which improves the printer’s overall reliability.
When compared to impact printers, non-impact printers produce less noise. The process of laying ink or toner onto paper is nearly silent; the only noises remaining are from the paper-feed mechanism and, in larger models, cooling fans for electronic components. The sound of a non- impact printer operating is appropriate in a quiet office setting.
High-resolution images, including professional-quality photographs, are produced by inkjet and laser printers. A typical laser printer has a resolution of 1,200 dots per inch or higher, while inkjet printers have a resolution ranging from 300 to 1,200 dpi. The majority of thermal printers are used in cash registers, adding machines, and labelling systems, and they typically print monochrome text and graphics at 203 or 300 dpi.