Epson WorkForce Pro WF-R8590 DTWF - Manual (Page 56)

3. Place the originals in the center of the ADF, facing up.
c
Important:
Do not load originals above the line just under the d symbol inside the ADF edge guide.
Note:
You can place originals smaller than A4 size with the long edge facing toward the ADF.
4. Slide the ADF edge guides to the edges of the originals.
The size of the originals is automatically detected.
Note:
Some sizes may not be automatically detected. In this situation, manually select the size of the originals.
Related Information
& “Available Originals for the ADF” on page 55
User's Guide
Placing Originals
56