I use an old Epson Workforce WF-7100. This printer does two sided scanning on the ADF, and you can create presets for color, black and white, etc. Mine was gi

I use an old Epson Workforce WF-7100. This printer does two sided scanning on the ADF, and you can create presets for color, black and white, etc. Mine was given to me out of a garage and has some wear and tear - the ADF jams a lot, so sometimes I have to use the glass. As long as the device can scan to PDF into a network folder, I think most scanners/printers will work. Paperless works by monitoring a folder you choose - it doesn't care how files get to that folder. It's very common for most all-in-one printer/scanners to be able to save to a Windows/SMB network share. In my case on the Linux box running Paperless, I also installed and setup Samba and exposed a share for the scanner. An engineering firm I used to work for rented Kodak i2600 document scanners from the company providing their printers - and they were constantly scanning and these devices didn't mess up. If I did high volume scanning I'd try to get one of those.