When printing out artwork (on a Brother HL-6050)in Illustrator V: 10.0.3, we have a problem with an opaque rectangular box blocking the art starting in the upper right corner. With each additional printed copy (hoping it will stop), another opaque rectangular box appears butt-linked to the 1st box, and so on with each print until the page is covered with white linked boxes. When the artwork is printed in any other application (Acrobat, Photoshop, etc.)the printed art looks fine. We're trying to stop this problem. We've tried flattening out the art layers, but the problem recurs. Any advise?