It could be, but there are a number of page setup options and printer setup options you could be setting (or failing to set) that could be causing this -- in addition, the problem could be anything from the program you're using to output the file from, to the imagesetter, or anything in between there.
Short answer: please elaborate greatly on your setup and the exact process (along with all pertinent settings) you're going through. Your original post is extremely vague, and, as such, only garners equally vague answers in return. If you can be more specific about the problem and the circumstances and settings, we can be of more help here -- help us help you!