Epson Action Laser II - Manual (Page 214)

The Multi-Media Feeder
3. Take a stack of paper and fan it. Tap the edges of the paper on a
flat surface to even up the stack.
4. Insert a stack of paper into the multi-media feeder, making sure
the top of stack does not exceed the maximum height of the
paper guide, as shown below. Gently push the paper in as far as
it will go.
Note: You can load up to 15 envelopes in the multi-media feeder.
Be sure to load them lengthwise and face-down.
A-6 Options