The Canon MF4600 series PCL6 Windows driver is a software driver that allows your Canon MF4600 series printer or multifunction printer (MFP) to communicate with a Windows computer using the PCL6 (Printer Command Language 6) standard. PCL6 is a page description language that is commonly used for printing in many laser printers. The driver enables your printer to understand the data sent from the computer and print it accurately.