1.
document scanner
A sheet-fed scanner designed to feed loose paper documents through automatically and scan them quickly, often used for filing or archiving.
ドキュメントスキャナーを導入した。
We introduced a document scanner.
A スキャナー built to feed multiple sheets of paper through automatically rather than scanning one page placed on a glass bed. Common in offices for digitizing and filing paperwork.
Common expressions
Compare フラットベッドスキャナー (single sheet or bound item on a glass bed) and ハンディスキャナー (handheld, swept by hand).