Hi,
I guess that you are using the 64 bit version of Win Vista/7?
The problem you are facing is due to the fact that Konica Minolta does not provide 64 bit drivers for this printer.
Printer drivers are propriety so that only the manufacturer can modify or write them.
For Vista 32 bit a driver is available.
Click here. Select Win Vista from the OS selector and then your desired language. Download links will be provided after selection.
If you really want to use this printer, you have to downgrade to 32 bit OS. You can also try contacting
Konica Minolta directly but I doubt they will provide a compatible driver.
The other solution is to try using Windows update.
Connect your printer and let windows automatically install the driver. Go to the device manager and locate the printer. If it shows a yellow mark, right-click it and select update driver.
If you find that there is no yellow mark against the printer driver, it means that the driver is installed and you can proceed towards printing.