Samsung SCX-8240NA-CAS - Manual (Page 65)

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In the DADF
On the scanner grass
Sideways Images LEF or SEF Top-to-Down
or
Down-to-Top
Top-to-Down
Down-to-Top
In the DADF
On the scanner grass
Upright Images LEF or SEF
a. LEF meaning is Long Edge Feed.
b. SEF meaning is Short Edge Feed.
Origianl orientation
(DADF/Scanner grass)
Original orientation
(display screen)
Direction of paper
feeding in the tray
Available
orientation
Result