Epson STYLUS SCAN 2500 User Manual page 123

Film holders
Three film holders are included with this unit. To scan film, see
the instructions below.
c
Caution:
Hold the film at the edges, or else use gloves. Touching the film
surface with bare hands can leave fingerprints or other traces on
the film.
Note:
The base side of the film is the side which the film maker's name and film
ID numbers are shown.
35 mm negative or positive film
Insert a strip of film in the 35 mm film holder, base side facing
down.
Brownie size (6 cm x 9 cm) film
Insert film in the Brownie size film holder, base side facing down.
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Scanner