Laser printer

Computer printer in which the image to be printed is formed by the action of a laser on light-sensitive drum then transferred to paper by means of an electrostatic charge.Laser Printers are page printers which can take the form text pictures,is made up of tinuy dots .The quality of the image generated depends on the fineness of these dots-laser printer resolution go from 300 to 1800 dpi Speeds vary from 4 to over 30 pages per minute.
Because they produce very high qualityprint and are virtiually silent,small laser printers have replaced dot matrix and daisy wheel printers as the most popular types of micro computer printer
Line printer:Computer printer that printers a complete line of characters at a time .Line printers can acheive very high printing speeds of up to 2500 lines a minute but can print only one type face,cannot print graaphics and are very noisy.Until the late 1980 s they were the obvious choice for high -volume printing.but high -speed page printers such as laser printers are now preffered.