Printing setup

I have problems setting up printing correctly. my goal is to print on scale 1.1 a design on an A4 printer so that the image can be used as a template. I have done the following as test:

- In system setup, set units to mm.

- Design in model a box of 100 x 100 mm.

- set up sheet that maps to an A4 printer with scale 1:1. Scaling in the printer dirver is turned off.

The image still prints as a small box in the corner. By changing the 1:1 mapping to something big I can apporximate the correct size,but that seems strange.

What have I set incorrectly?

Thanks.