Place Documents on the Scanner Glass You can place documents up to letter-size on the scanner glass. Before you start, make sure the glass is clean. Note:You can also copy a book or other thick document up to about 1/2 inch (12 mm) thick. 1. Open the document cover. 2. Place your original document face-down on the scanner glass with the top against the back left corner. 3. Close the document cover gently to keep your document in place. Once the original document is loaded, you can copy, scan, or fax. Note:When there is a document on the scanner glass and in the Automatic Document Feeder, the document in the ADF will be scanned. See also: Place Documents in the Automatic Document Feeder Place Photos on the Scanner Glass Place CDs/DVDs on the Scanner Glass