A file that tells Windows how to control a printer. A PostScript printer such as an HP LaserJet needs to receive data as PostScript instructions, whereas an inkjet needs to receive data as instructions that tell it how to print one line at a time. These differences are translated by the printer driver which sits between Windows and the printer. Windows comes with hundreds of printer drivers which cover most printers. But, if a new printer is produced, make sure that it is supplied with a Windows printer driver or you will not be able to print. The exception to the rule is if the printer is emulating another printer. All PostScript printers can use the same basic PostScript printer driver.
