- HP Printer User Manual

ENWW Original conveyance process 7
ADF overview
The original is read when it passes over the
ADF glass. The original that has been read
is ejected to the original exit section by the
original exit roller, passing along the
circumference of the original exit guide. The
next original is pre-fed if there is one.
Double side original copy mode
(single side copy, double side copy)
The order by which the original is scanned is
2 → 1 → 4 → 3 during the double side
original copy mode; the back side is scanned
first, then the front side.
The original set on the original feed tray is
pre-fed by the pick roller and feed roller until
the original registration PS/1 (PS304) turns
on and original reaches the registration
roller. Then, the reverse gate opens, and the
registration roller conveys the original to the
reversal section. The reversal roller and
original exit reversal roller feed the original
inside the reversal section.
The original is conveyed to the edge of the
reverse gate until it stops when the specified
time has passed since the PS304 detects
the trailing edge of the original. The original
flips over and the reverse gate closes. The
reversal roller and the original exit reversal
roller turn to the reverse direction, and feed
the original to the read section.
The reading of the back side of the original
starts when the original conveyance PS
(PS306) turns on. The original exit gate
lowers and the original is fed to the original
exit reversal roller when the back side is
scanned. The pressure on the original exit
Registration roller
Conveyance roller
Original conveyance
PS (PS306)
Original registration PS/1
(PS304)
Original exit reversal
roller
Registration roller
Reversal roller
Reverse gate
Next original
Original exit reversal
roller
Reversal roller
Reverse gate