I do apologize, but I'm not familiar with the name for this type of paper or result, but when you purchase postcards or greeting cards that have been professionally made, they have a finish on one side (typically where the photograph is, or the outside of the greeting card). This is opposed to the "paper texture" on the side you write on. This same type of finish is found pretty much anywhere you find packaging that been professionally produced (cereal boxes, soft-cover books, etc).
First, What is the name for this type of finish?
And second, how is it created? Is a special type of printer or paper required, or is the finish added after the item has been printed? Would it be feasible for these types of things to be printed by a small business, or are high-cost industrial printers required?