HP Officejet 6310: Printing directly off Memory Card

hi everyone, i recently got an hp officejet 6310 and have a question that i was hoping someone here would know the answer to since hp's tech support has no clue.

the 6310 comes with a card reader. it lets you print pictures directly off a memory card by just using the printer, however my question is can you print documents, a word, excel, powepoint, or pdf files, directly off the memory card. so far i've been unable to. it only seems to recognize pictures but not other file types.

if anyone knows the answer it would be greatly appreciated.