For Mac Os 9.2 - Konica Minolta bizhub C450 Quick Manual

2
Enter "/usr" in "Go" - "Go to Folder" to move to the "/usr" folder, and
then drag the "pstokm450" folder, which is located in "libexec"-
"cups"-"filter", to the "Trash" icon.
8
Restart the Macintosh computer.
This completes the uninstallation procedure.

For Mac OS 9.2

1
Drag PPD file "KONICAMINOLTAC450UVxxx.ppd", which is located in
"System Folder"—"Extensions"—"Printer Descriptions" of "Hard
Disk", to the "Trash" icon.
The related printer driver files are deleted.
2
Restart the Macintosh computer.
This completes the uninstallation procedure.
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Installing the Printer Driver
C450