Line by line printing and NOT page by page printing

Dear,
I am using a line printer (dot matrix). I would like to print line by line
and not the default MS Word page by page printing.

For instance, I have set A4 as my paper size and fed my printer with
continuous sheet. I have single line of text in MS Word. If I print, the
printer stops at the A4 size only, wasting my paper. But I like the printer
to stop after printing the Single line.

Please help me in this regard.

Thanks in advance.