Problem is in printing

Question

hi... 
My problem is in printing.I need to use roll paper for printing,.Now I am using single paper.so the paper ejects compleatly even if my report contains only one line.so the paper wasts.So I need to use roll paper,so that it would not eject compleatly.Only the paper contains data shoud eject.Then what the code should i needto write for not ejecting the paper compleatly?.I am using crystal reports in c#.My printer is dot matrix printer.Please help me.... 
Thanks in advance