Crystal Report roll paper printing

Question

I have a Crsytal Report in C#, which is printing bill in a shop.
Its working, but at the time of printing after printing the actual text, the printer through lots of paper out from the printer like 2 to 3 inches paper[Roll paper does not have any fixed height, width is 4 inches]. That paper go wasted.

It is the problem.

Can we stop the printer after printing the actual printing, so that any blank page will not go wasted.

How to stop printer to eject extra paper from printer.

tell Me If Anyone how to solve the Problem...