According to Microsoft’s documentation, you can prevent the transfer of data by using AD RMS to restrict the Print Screen functionality. Here is an excerpt from that documentation:
Microsoft Sharepoint is not required to install or use AD RMS. Using AD RMS with Microsoft Sharepoint can provide the following benefits:
- Helps to prevent an authorized viewer from copying, modifying, printing, faxing, or copying and pasting the content for unauthorized use
- Helps to prevent an authorized viewer from copying the content by using the Print Screen feature in Microsoft Windows
- Restricts access to content to a specified period of time, after which users must confirm their credentials and download the content again
- Helps to enforce corporate policies that govern the use and dissemination of content within your organization
For additional information, see Microsoft Office SharePoint Server (MOSS)(http://go.microsoft.com/fwlink/?LinkId=154664).