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.
Open the [Printers & Scanners] window.
Mac OS X 10.6: [Print & Fax] window
Mac OS X 10.7/10.8: [Print & Scan] window
Click the Apple mark and open the [Printers & Scanners] window from [Apple Menu] in [System Preferences].
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], to the [Trash] icon.
KOI1100J_.ppd
KOI1100_.ppd
Delete unnecessary files from [Library] - [Printers].
Drag the following files, which are located in [Library] - [Printers] - [KONICA_MINOLTA], to the [Trash] icon.
pstoKOI100BW
KOI100BW.plugin
KOI100BW.icns
From the Finder menu, click Move. Pressing the option key, click [Library]. Drag the following files located in [Preferences] onto the [Trash] icon.
For Mac OS X 10.6, drag the following files, which are located in [Macintosh HD] - [Users] - [User Name] - [Library] - [Preferences], to the [Trash] icon.
bizhub PRO 1100 Printer Driver x86_64 Preferences
Depending on the driver setting, the above file may not be displayed.
[User Name] is the account name selected at the time of login.
Restart the computer.
This completes removing the printer driver.