Canon imagePRESS C7000VP Reference Manual page 78

NOTE
If the original has too many pages to be placed in the feeder all at once, use
the Job Build mode on the Special Features screen. (See Chapter 5,
"Special Copying and Mail Box Features," in the Copying and Mail Box
Guide or Chapter 4, "Special Scanning Features," in the Sending Guide.)
1
Adjust the slide guides to fit the size of your originals.
2
Neatly place your originals with the side to be copied face
up into the original supply tray.
Place your originals as far into the feeder as they will go, until the
Original Set indicator is lit.
Original Set Indicator
Feeder (DADF-R1) A3-20