print size wrong

I'm using CorelDraw X8. my print size output does not match the image i created.  the output is smaller. so my image is 6-1/8 x 12- 1/8. my print output is 5-15/16 x 11- 15/16. printer is a Epson ET-2750. i contacted Epson and they say it's a setting in CorelDraw. Please help me with this