help pls: HP Laserjet only printing on edge of pg

Very suddenly my HP Color Laserjet 2840 began printing only the very right hand edge of the page.

It prints within 2" of the paper edge for the full length of the page, fading out towards the center of the page.

Here is a picture of a test page I just printed:

http://gro-beak.com/pics/printer_problem.jpg

Any help would be greatly appreciated.

THANKS!

-Andy