Epson CX6500 Reference Manual page 128

Note:
Always load paper into the sheet feeder with the short edge first.
Always load letterhead or preprinted paper into the sheet feeder top edge first.
Make sure that the paper stack is flush with or lower than the triangular load-limit
mark on the edge guide.
Ensure that you set the adjust lever to the
than envelopes when the lever is set to the
be compromised.
Flip the feeder guard back over the
paper.
Note:
If the paper is curled, flatten it or curl it slightly toward the opposite side before loading.
Printing on curled paper may cause ink to smear on your printout.
position. If you print on paper other
position, print quality and speed will