The Xerographic principle is made use in the toner based printers. In most of the photocopier machines this is the principle that has been followed to get the documents Xeroxed. The toner or the encre that is used is of black color that is passed through a sort of light-sensitive drum that is used for printing. Then in order to change the toner to the medium in which it can be used for printing the static electricity is consumed. The toner is now fused with the heat and pressure by which the toner gets melted. The example for this is the Laser Printer.