Your Cart is Empty
Subtotal
$0.00
Go to Cart
Your Cart is Empty

How can I avoid that USM is applied to my scanner files?

If you scan directly to Tiff or JPG you need to enable USM and set the value to -120 (mi nus 120). If you are saving a 3f scanning to Tiff or JPG you need to enable USM and set the value to 0 (zero).