Bert -

Additional info on the Epson R300:

The Epson User Manual indicates that this printer is intended to print only photos, printable CDs, and CD box inserts. The only input accepted, that I found, is .jpg or .tif files.

This is a special purpose "photos only" printer, and is not intended for printing from any common office program, so the only way I can see to adjust the position of what's printed is to change the size of the "image" in the image file so that the image includes appropriate blank areas, as already suggested.

At page 75 or so of the manual, there is an adjustment for centering the printing of a CD label onto a printable CD but this apparently works only when printing to a CD, which only prints what's inside a 12 cm diameter circle (with a hole in the middle).

The manual is about 6 MB, .pdf, (124 pages) and would perhaps be worth downloading if your friend doesn't have one. There are some other documents shown at the link, but I didn't find any that - on quick look - indicated any additional help.

John