Epson XP-830 User Manual page 67

5. Insert up to 10 envelopes, printable side down and flap edge left, as shown.
Note: Make sure the envelopes are not sticking out from the end of the cassette.
6. Slide the edge guides against the envelopes, but not too tightly.
Note: Make sure the envelopes are under the tabs on the edge guides.
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