Sending faxes by placing originals one by one, or by placing originals by size, you can send them as one document at their original sizes.
If you place different sized originals in the ADF, all of the originals are sent at the largest size among them. To send originals at their original sizes, do not place originals with mixed sizes.
Place the first batch of originals at the same size.
Select Fax on the home screen.
To select an item, use the 
buttons, and then press the OK button.
Specify the recipient.
Press the OK button, and then select Scan Settings.
Select ADF Continuous Scan, and then select On.
You can also make settings such as the resolution and the sending method in Scan Settings or Fax Send Settings if necessary.
Press the 
button until you are returned to the Fax screen, and then press the 
button.
When scanning the first originals is complete and the message Send another page? is displayed on the control panel, select Yes, load the next originals, and then press the button.
If you leave the printer untouched for 20 seconds after prompted to set the next originals, the printer stops storing and starts sending the document.
When sending is complete, remove the originals.