I'm still trying to find my way in this discussion group; I posted a reply to all you respondants but it seemed to have disappeared.  Once again, my most sincere thanks to all who devoted their time and effort in consideration of my quandry.  I think Terry-M's initial response may come close to explaining things.  I'd like to briefly explain what may seem to some a rather capricious selection of paper size.  Red River Paper produces an excellent greeting card stock in several sizes; the one I use most is a paper size of 9 x 6.25in.  This paper is pre-scored so when folded it gives a finished card size of 4.5in x 6.25 inches-- resulting in an outside image size of 4.25 x 6in if I want a 0.125in margin all the way round.  Similarly, if I am producing an image for the entire inside card surface, the dimension of my print (not paper)  must be 8.75 x 6in (again, allowing for the 0.125in margin).

Thanks again, so very much, for the individual responses.

I have entered 6.25 x 9.0in into my Canon i9900's Page Size window found in Page Setup tab.  The page dimension shown above Qimage's Preview Window is 5.931 x 8.731.  There are no special "modifiers" (e.g., borderless prints) checked on the Canon set-up page.  I have just downloaded the Qimage demo version for pre-purchase evaluation.  Assistance would be ever-so-much appreciated.