Epson DS-770 II User Manual page 57

Specifications of Originals and Placing Originals
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Placing Originals Envelopes
Placing Envelopes
1. Open the input tray and extend the input tray extension. Slide out the output tray, extend the output tray
extension, and then raise the stopper.
2. Slide the edge guides on the input tray all the way out.
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