Because apparently Americans don't have easy enough access to junk food, soon getting a candy bar could be as easy as hitting "print." 3D Systems (DDD) announced a deal with Hershey's (HSY, Fortune 500) Thursday to collaborate on developing a 3-D printer that makes chocolate and other edible products. In a statement, 3D Systems said making printers that print chocolate is a good way to help the relatively new technology go mainstream. Hershey sees it as a great delivery system for its products. "Whether it's creating a whole new form of candy or developing a new way to produce it,...