how to give page-auto-cutter for Dotmatrix(EPSON-LX300) printer..?

Question

hi,

am designing invoice for a sale Shop.

so am using 'printLine' function to design my Invoice and printing it by BATCH execution.

Now my Invoice works(Prints) fine but, IN my EPSON LX300 printer after printing the INVOICE

it is going to the next sheet (B4 type sheet).(STOP THE PAPER AFTER THE Last-Line of MY INVOICE PRINTS)

its a paper wastage..?/ How can i solve this..??

Is there any settings in Printer..??