need help relating printing?

hi all,

i need some help concerning to printing. i am using QPrinter, QPainter class for printing receipts. printing is going fine but i dont want the printer to eject full paper when i complete printing. i want printer should scroll only that amount that has printing but printer scrolls full page. so please if some one can guide me which api i should use to stop the printer not to scroll full page.

i am using EPSON Dot Matrix printer.

hoping good and early response from someone.
take care.
omar