In order to get soft proofing to work, it is necessary to have a good quality printer ICC profile. The printer ICC profile contains the following information: printer characteristics, ink color characteristics, paper characteristics, and light source characteristics. You can obtain printer ICC profiles from the printer manufactures, but the ICC profiles they provide are made from the batch, not specifically tailored to your printer unit. Secondly, they usually don’t support third party paper types. That’s why we’d recommend creating your own printer ICC profile as long as you have the proper device.