Note: This topic is now obsolete. Apex 9.5 adds the capability to import PDF files.
Apex 9 needs to be able to obtain a scan directly from your scanner. Many network scanners simply package up the scanned document as an Adobe Acrobat (PDF) file and send it for an email. The PDF file is not suitable for Apex to use to put into the database.
More InformationApex uses a TWAIN interface to talk to your scanner. This is the industry standard. Any normal scanner that you purchase to connect directly to your computer will have a TWAIN interface. (By "normal" I mean a scanner that is not designed for medical imaging, etc.)
If your network scanner has a TWAIN interface available then you can use it with Apex 9.