Print a Duplex

[ThePhotoShoper]

I converted my image to grayscale and than to duplex. I can save the image as .psd / .eps and .pdf.

I can not save the image as .tif or .jpg.

If i want to print the image by a service from a company like whtewall or saal-digital, the companys accept only jpeg or tif. 

If i export the image for the web (not the best solution...), the image gets a huge saturation....

Has anyone a solution for the situation? My target is: printing of a dupley converted image via an external service.

Thanks!

[ThePhotoShoper]

i have found  aolution: save as eps, open the eps file and save as tif....

[Derek Cross]

Do you mean a duotone?