olemus
mõlema külje skaneerimiseks lehti pöörav automaatsöötur
= automatic document feeder that turns pages to scan both sides

näiteid
https://duckduckgo.com/?q=reversing+automatic+document+feeder&t=h_&iax=images&ia=images

ülevaateid
https://en.wikipedia.org/wiki/Automatic_document_feeder

https://blog.getaos.com/en-us/sample-redesign/the-differences-between-dsdp-and-radf-on-copiers-and-multifunction-printers-0