Uninstalling the Printer Driver
When you have to remove the printer driver, for example, when reinstallation of the printer driver is necessary, remove the driver using the following procedure.
1
Open [System Settings] (or [System Preferences]) in the Apple menu, and click [Printers & Scanners].
2
Select the printer you want to delete, and then click [Remove Printer] (or [-]).
The selected printer is deleted.
3
Close the screen.
4
Drag the files of the printer driver of this machine, which are located in [Library] - [Printers] - [PPDs] - [Contents] - [Resources] on the installed [Macintosh HD] (system hard disk), to the [Trash] icon.
5
Delete unnecessary files from [Library] - [Printers].
Drag the folder of the printer driver of this machine, which is located in [Library] - [Printers] - [KONICA MINOLTA], to the [Trash] icon.
6
Restart the computer.
This completes the deletion process of the printer driver.
in the upper-right of a page, it turns into 
and is registered as a bookmark.