Macintosh
When you have to uninstall the Windows printer driver, for example, when reinstallation of the printer driver is necessary, uninstall the driver by using the following procedure.
Click the Apple mark, and then select [System Preferences] from the [Apple Menu].
Open the [Printers & Scanners] window (the [Print & Fax] window for OS X 10.7/10.8).
Select the printer name to be deleted, and then click [-].
The selected printer is deleted.
Close the [Printers & Scanners] window.
Drag the following files, which are located in [Library] - [Printers] - [PPDs] - [Contents] - [Resources] for the installed [Macintosh HD] (hard disk drive), to the [Trash] icon.
KONICAMINOLTAC71cf.gz
Drag the [C71cf] folder, which is located in [Library] - [Printers] - [KONICA_MINOLTA] to the [Trash] icon.
Restart the computer.
This completes removing the printer driver.