When upgrading to a new operating system, it isn't uncommon for devices such as printers to stop working. Fortunately, it's often a very simple solution. First, go to System Preferences and find "Printers & Scanners". Then delete and re-add the printer.
Apple announced the next version of Mac OS X at WWDC (World Wide Developers Conference) Monday, and it's called "Mavericks". The new name is a departure from previous names of Mac OS X, which centered around big cats as the theme. Senior Vice President of Software Engineering Craig Federighi introduced it, saying "We do not want to be the first software release in history to be delayed by a lack of cats."