Please scan the original and put it into the shared folder.
原本書類 - original (document); original だけでも大丈夫だと思います
共有フォルダ - shared folder
長いけどもっと詳しい
Please scan the original document and place the scanned copy into the shared folder. (単数形 singular form - 1 thing 一枚)
Please scan the original documents and place the scanned copies into the shared folder. (複数形 plural form - more than one X>1)
みじかいほう
Please scan the original and put it into the shared folder.