Epson Stylus COLOR 640 Setup And Daily Use page 22

3. Load the stack of paper with the printable side up and the
right edge of the paper resting against the right side of the
sheet feeder. Then slide the left edge guide against the edge
of the paper.
printable
side up
Note:
Always load paper into the sheet feeder short edge first.
Make sure the paper stack fits under the arrow mark inside the
edge guide.
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