SAPScript output not matched preview

hi!

can anyone help me in my problem re: SAPSCRIPT. upon preview of the form (PO custom form), it appears ok - ie alignment, formatting etc. but upon printing on EPSON LQ2180 (locl), the text on a pagewindow (w/c is located on the upper left corner of the form) appeared on the upper right corner, nearly overlapping the contents of another pagewindow.

thanks in advance,

rico