New Post: How to set up the usage of the transparency unit and the image position

I want to set the cropped image box coordinates ( x, y of left upper corner of image to be scanned) as well as the image width and height without
using the scanners native GUI (e.g. the GUI of Epson Scan) and I want to exploit the scanners TPU.

I think. I have found the capabilities which take care about the image position on the scanner glass pane(, but I have not found a capability
to exploit the TPU. So you am probably right, I have to contact the scanner manufacturer.

Anyway: Many thanks for your help.
Wolfgang