When your Epson Expression 1640XL or GT10000+ is working at full capacity, it's time to allow your scanner to grow. With the addition of this legal-size automatic document feeder, you can scan documents of up to 30 pages with speed and ease. Running at 10 pages per minute (maximum) in 200 dpi for black in draft mode, the feeder handles up to 21-pound paper--letter, A4, or a variety of smaller sheets. The document feeder is an ideal supplement that helps you make the most of the high dynamic range and large-format scanning provided by the 1640XL or GT10000+. Plus, you'll enjoy the benefits of reduced labor.