Spf Section; D-D (Duplex To Duplex) Mode Paper/ Document Transport (Duplex Model) - Sharp AR-122E Service Manual

(3) Conditions of occurrence of paper misfeed
a. When the power is turned on:
PPD or POD is ON when the power is turned on.
b. Copy operation
a PPD1 jam PPD1 does not turn off within 4 sec after turning
on the resist roller.
b PPD2 jam PPD2 is off immediately after turning on the
resist roller.
PPD2 does not turn off within 1.2 sec after
turning off the resist roller.
c POD jam POD does not turn on within 2.9 sec after turning
on the resist roller.
POD does not turn off within 1.5 sec - 2.7 sec
after turning off PPD2.

6. SPF section

A. Outline
The SPF (Single Path Feeder) is installed to the AL-1456 as a stan-
dard provision, and it automatically copies up to 30 sheets of docu-
ments of a same size. (Only one set of copies)
B. Document transport path and basic composition
12
1 Pickup roller
3 Set detection ACT
5 Document feed roller
7 Paper entry sensor
9 Transport follower roller
11 Paper exit follower roller
C. Operational descriptions
Time chart (Tray feed)
Document set
SPID ON
Document feed unit lamp ON
PSW ON
MIRM rotation
(Copier side)
MM rotation
Main motor rotation
Paper feed
CPFS ON
PPD ON
RRC ON Synchronization
Paper transport
(Transfer)
(Fusing)
POD ON
(Paper exit)
In the zooming mode, the magnification ratio in the sub
scanning direction (paper transport direction) is adjusted
by changing the document transport speed.
1
3 2
4
11
10
2 Sheet of document for
paper feed
4 Paper stopper
6 Separation sheet
8 PS roller D
10 Paper exit roller
12 Document tray
Document set sensor
Copy start
The scanner is shifted
to the exposure position.
(SPF side)
SPFM rotation SPF motor rotation
Document feed
SPUS ON
Document transport sensor
SPPD ON
Document transport
(Exposure)
(Document exit)
AR-122E/152E/153E/157E OPERATIONAL DESCRIPTIONS 7 - 7
PSW
MIRR M
SPF M
CL
SPUS
SPPD
SCANST
MAIN M
CPFS1
RRS
PPD1
PPD2
POD
D. Cases where a document jam is caused
1) When SPPD is ON (document remaining) when the power is
turned on.
2) When SPPD is not turned ON within about 1.5 sec (at 100% copy)
after starting the document feed operation.
3) When SPPD is not turned on within about 4.7 sec (at 100% copy)
after turning on SPPD.
4) When the SPF document jam release door or the OC cover is
opened during document transport (SPF motor rotating).
7. D-D (Duplex to Duplex) mode paper/
document transport (Duplex model)
A. Initial state
Set duplex documents on the document tray.
5
6
Set paper on the cassette. (In the duplex mode, the manual feed tray
cannot be selected.)
7
B. Front copy
8
9
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 transferred.
• The paper is passed through the fusing section 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)
625msec
752msec
756msec