Have you tried removing and reinstalling your printer using System Preferences?
If not, open System Preferences (under the Apple logo in the menu on the upper left), and click "Print & Scan".
Then highlight your printer and use the minus sign in the lower left to remove it.
Then use the adjacent plus sign to add it again.
In case it helps, here the Mac 101 Printing article: http://support.apple.com/kb/HT4670
Your printer is listed in "Printer and Scanner Software", so the process should eventually find the driver.
The article says it's for Lion, but it's still the most current one in Apple's knowledge base.