Epson EPL-7500 User Manual page 96

Loading Paper in the Cassette
3. Take a stack of paper and tap the edges of the paper on a flat
surface to even up the stack as shown.
4. Insert the stack of paper into the paper cassette, making sure
that the top of the stack is below the maximum height mark
inside the paper cassette. Push the paper in gently as far as it
will go.
4-10 Paper Handling