Hilmar,
My problem arise from printing of odd size documents. Half page, 5x4 etc. Some printers have a tear off button where after completing the printing of one page, pressing that button will forward the paper slightly to allow a clean tear off, and pressing once again will load the paper back to the original place.
Problem with the documents printed from my app is that upon pressing that button, the paper goes backwards instead of forward.
Don't really know what is wrong.
Yau