AR-155 (serv.man8). AR150 155 ARF151 Service Manual-Operational Descriptions - Sharp Copying Equipment Service Manual (repair manual). Page 10

Gate OFF

Lower Side of Gate

Gate ON

Gate ON

Upper Side of Gate

Gate ON

Gate OFF

Set duplex documents on the document tray.
Set paper on the cassette. (In the duplex mode, the manual feed tray
cannot be selected.)

Document transport: The document feed roller feeds the document

from the paper feed roller to the PS roller.
→ The document is exposed in the exposure

section, and sent to the document exit section
by the transport/paper exit roller.

→ R-SPF gate solenoid ON

→ The document is sent to the intermediate tray

(but not discharged completely.)

→ The document is stopped once, then

switchback operation is performed. (To the
back copy)

Paper transport:

The document is passed through the paper feed
roller and the PS roller by the paper feed roller
and the images on the front surface are trans-
ferred.
→ The paper is passed through the fusing sec-

tion and the lower side of the gate section to
the paper exit tray side, (but not discharged
completely.)

→ It is stopped once and switchback operation

is performed. (To the back copy)

Document transport: By switchback operation, the document is sent

through the PS roller to the exposure section,
where the back of the document is exposed.
→ It is sent to the document exit section by the

transport roller and the paper exit roller.

→ R-SPF gate solenoid ON. The document is

sent to the intermediate tray, (but not dis-
charged completely.)

→ It is stopped once and switchback operation

is performed.

→ It is sent through the PS roller and the ex-

posure section (without exposure operation)
to the document exit section.

→ R-SPF gate solenoid OFF

→ The document is discharged to the document

exit tray.

Paper transport:

Switchback operation is performed.
→ The paper is sent through the upper side of

the gate section and the duplex transport sec-
tion, and the PS roller, and the images on the
back are transferred.

→ It is sent through the fusing section and dis-

charged to the paper exit tray.

Switchback operation is made after back copying in order to discharge
documents according to the setting.
Set document    Documents after discharge,

1

with empty feed

4

without empty feed

3

2

3

4

3

2

1

4

1

2

There are following job modes as well as D-D mode.

S - S (Simplex to Simplex)
S  -  D (Simplex to Duplex), Rotation copy mode (The back images are

rotated 180˚.)

S - D (Simplex to Duplex), Copy mode without rotation
D - S (Duplex to Simplex)

Rotation copy mode:

The front and the back are in upside down each other.

Copy mode without rotation:

The front and the back are not in upside down.

AR-F151

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