Are you using HP LaserJet Director?
Your default property settings for HP LaserJet Director might be set to automatically perform a
specific task other than the one you are attempting. For example, you can set HP LaserJet
Director to automatically perform a scan to e-mail. This means that your image does not show up
on the screen but is attached to an e-mail message as a file. See the product software Help for
instructions on changing the properties in HP LaserJet Director.