Somes colors didn't print

Hello everybody,

I have a little problem, I would like to print my drawing, my drawing contain multiple layers(cotation, hole, graphical,...) First of all choose which layers I would like to print. When I click print I configure A3, scale 1:1, actual view, landscape and center to page and I click preview. And I have text in white(on my original) and it is in black... and I have a background color(gray number 250) and this color will not appear... Why?

Thank you very much for your help ;-)

Lionel