The requirements of your situation are not clear.
PDF allows exact replication of a page on most any system or printer. That's a good thing. However, PDF also generally allows things like a "find" operation for some text and may show the documents structure. If you are just scanning, you will not have this. What you are suggesting sounds like the only thing a PDF document will have is the image of a single scanned page. "Find" would find nothing. So, do you only want the image or are you interested in the text data as well? If you need access to the text (e.g. for Find), character recognition is a required step. The text would then needed to be formatted into a PDF file, but may not look like the original.
If it's only an image, other file types, say TIFF would work as well.
What are the requirements?
[link|http://www.transformmag.com/index.shtml|Here is a site] for ideas.