Epson DFX-9000 - Manual (Page 30)

30 Paper Handling
You can set the top-of-form position from 4.2 mm (0.17 inch) to
33.9 mm (1.33 inch) below the top edge of the paper. The factory
setting is 8.5 mm (0.33 inch).
Follow the steps below to reset (permanently change) the
top-of-form position.
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Caution:
To adjust the top-of-form position when you are printing on
labels, continuous forms with labels, or overlapping multi-part
forms, use the Micro Feedu button only; do not enter the
top-of-form mode. Never feed labels backward through the printer.
1. Make sure the printer is turned on and the desired tractor is
selected (the corresponding tractor arrow should be lit).
2. Open the upper cover.
3. Press the Top of Form button to enter top-of-form mode. The
printer beeps once, and the Top of Form light turns on.