A little more information would be required to diagnose this problem properly.
From what it sounds like, you're attempting to print from a webpage?
If so, there are certain issues with that arise when attempting to print a webpage. These are inherited from certain fields / forms / frames that are not properly converted into PCL (Printer Control Language) or PS (Postscript)
Internet Explorer seems to have some issues with converting this data properly as it attempts to convert the whole webpage, whereas more 'custom' browsers such as Firefox only convert the 'main' field.
If you can give more information regarding this, I'll surely rack my brain to give a solution.