My Epson R280 printer won't print red anymore. I haven't had it for too long (less than a year). I haven't had any problems with the printer before yesterday. I'm using the same paper as I always do-Epson Premium Luster-and the Epson brand inks. I just changed all of the ink cartridges and ran every printer maintenance test available. I have looked at the several documents that I am trying to print on many different computer screens, some of which were recently calibrated. I have the latest printer drivers installed on my two computers, so that shouldn't be the problem. Any ideas what could be causing this to happen and any solutions to the problem? Thanks in advance for the help.