Printer is printing code from webpages I am trying... (by 2 users)

When printing with my Brother MFC 420 CN it has recently starting printing strings and strings of code from the webpage I am trying to print - not the page itself with pictures and words, but just string of stuff. It's very small print.
We have unplugged the unit and left it off for about 10 minutes and that worked the first time. It will not work now.
We also recently switched to a Comcast cable connection, but it was fine for the first 3 weeks.
Help! and THANKS!