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.
Open the [Print & Fax] (or [Print & Scan]/[Printer Setup Utility]/[Print Center]) window.
The [Print & Fax] or [Print & Scan] window can be opened from [System Preferences...] in Apple menu (Mac OS X 10.3/10.4/10.5/10.6/10.7/10.8).
The [Printer Setup Utility]/[Print Center] window can be opened from [Macintosh HD] - [Applications] - [Utilities] (Mac OS X 10.2/10.3/10.4).
Select the printer you want to delete, and then click [-] (or [Delete]).
The selected printer is deleted.
Close the [Print & Fax] (or [Print & Scan]/[Printer Setup Utility]/[Print Center]) window.
From [Library] - [Printers] - [PPDs] - [Contents] - [Resources] on [Macintosh HD] where the driver was installed (in Mac OS X 10.5/10.6/10.7/10.8, from [Resources] and in Mac OS X 10.2/10.3/10.4, from [Resources] - [en.lproj], [de.lproj], [es.lproj], [fr.lproj], [it.lproj], [ko.lproj], [ja.lproj], [zh_CN.lproj], and [zh_TW.lproj]), drag the following files to the [Trash] icon.
[KONICAMINOLTA754.gz]
[KONICAMINOLTA654.gz]
Delete unnecessary files from [Library] - [Printers].
Drag the [754] folder, which is located in [Library] - [Printers] - [KONICAMINOLTA], to the [Trash] icon.
In addition, if you are using Mac OS X 10.2, drag all the [KONICA MINOLTA 754] folders, which are located in [Library] - [Printers] - [PPDPlugins], to the [Trash] icon.
In Mac OS X 10.2/10.3/10.4/10.5, drag [bizhub 754_xxx.pkg], which is located in [Library] - [Recipients], to the [Trash] icon.
Restart the computer.
This completes the deletion process of the printer driver.