Question: I don't know if this is the right place to ask this question, but...

I need a scanner (paper feed scanner) where depending on either a barcode, or number, or some identifier on the paper being scanned, creates a PDF file with a name based on that identifier.

For example: If I scanned a page with the number 12345 on the top-left of the page, a PDF file named 12345.pdf would be created.

Any suggestions at all would be greatly appreciated!

Answer: 
If you looking for document scanner that has the capability to do batch separation using barcode and rename them base on barcode and zoned OCR you can try to do it with Fujitsu Scanner bundled with its software scan all pro. Other choice is you are using Kodak scanner with kodak capture but the software is sold separately and it quite costly.
If you have an ISIS based scanner you can try Quick Scan Pro software to do it. I have used scan all pro since 3 years ago to digitalized million of pages and it works fine.
Sorry for answering a 3 year old thread, but I was in search of something like this too in the place I work in. After some research, I stumbled upon [Batch Scan To Pdf](http://www.batchscantopdf.com)  that exactly does what you need in your description. Instead of regular barcodes however, they use QR-Codes. They are SUPER cheap compared to other ones I've seen. Hope this helps others who may need similar functionality.