Posted 05 December 2010 - 07:26 AM
I've just done a bit of digging and it seems that it could be a number of problems. One forum suggested that it's "several tiny dots of paper that rub off during printing, and can jam your nozzles". Another said it could be the program you're using.
If you're printing through Photoshop, try saving the picture and then printing it through MS word or something? A lot of people have said that, upon switching programs, there are significantly less white dots.
Also, printing in "High quality mode" (What ever that is...) will supposedly reduce the dots' numbers too.
Hope this helps, as I don't even have a printer! haha.