Epson WF-2630 – with ADF scan area is shifted 5.9 mm to the left
scanning DIN A4 a paper sheet from the flatbed works correctly, but when using the ADF the scan area is shifted 6 mm to the left, i.e on the left side of the scan there are missing 5.9 mm of the original and on the right side there is a 5.9 mm black border.
The cause seems clear: The scan unit area is 215.9 mm = 8.5" but a DIN A4 paper sheet is only 210 mm. When using the ADF, a DIN A4 paper sheet is mechanically shifted to the right edge of the scan unit area. But the driver or the SANE-framework does not recognize this offset correctly.
I'm using Ubuntu 18.04 and installed the drivers from here: http://download.ebz.epson.net/dsc/search/01/search/searchModule