Cheque Page settings in the Printer

Hi all,I have create a new page to print the cheque,but how to add this page in the Printer? Iam using EPSON LQ-300,but there is no option to create a new page format.When Iam printing,it is printing the cheque successfully by the roller is rolling to 2 cheques.I tried all page format available in the printer settings.

Hope Iam clear in my questian.

Thanks & regards,

Rock.