ScanSnap ix1500 is now unsupported by Ricoh. The ScanSnap software goes end of life next version of macOS. VueScan probably works for the scanner. Will VueScan work with DT4? Does it matter if using an indexed database? What are the options? If new scanner required, what scanners do we like?
VueScan will work, or actually any scanner software that can create PDFs and open them in other apps. So instead of opening the ready scan in Preview you let it open it in DEVONthink which in turn happily import it. Just a bit more manual work to set up.
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