Spf Section; Outline; Document Transport Path And Basic Composition; Operational Descriptions - Sharp AL-2021 Service Manual

7. SPF section

A. Outline
The SPF (Single Path Feeder) is installed to the AL-2031/2041 as a
standard provision.
It automatically copies up to 50 sheets of documents of a same
size. (Only one set of copies)
B. Document transport path and basic
composition
AL-2031/2041
11
1 Pickup roller 2
3 Set detection ACT 4
5 Separation sheet 6
7 PS roller D 8
9 Paper exit roller 10
11 Document tray
AL-2031/2041
PSW
MRMT
SPF M
CL
SPPD
SCANST
MAIN M
CPFS1
RRS
PPD1
PPD2
POD
SPF JAM generation condition
1) When SPPD is ON (document remaining) in initializing
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 OFF within about 4.7 sec (at 100%
copy) after turning on SPPD.
4) When the OC cover is opened during document transport (dur-
ing SPF motor rotation) (The SPF motor is stopped during doc-
ument transport, but the OC cover open error occurs instead of
the SPF JAM.)
9 1 3 4
5
10 2 6 7
Sheet of document for paper feed
Document feed roller
Paper entry sensor
Transport follower roller
Paper exit follower roller
260ms
AL-2041 OPERATIONAL DESCRIPTIONS 7 - 8
C. Operational descriptions
Document set
SPID ON
Document feed unit lamp ON
PSW ON
MRMT rotation
(Copier side)
MM rotation
Main motor rotation
8
Paper feed
CPFS ON
PPD ON
Synchronization
RRC ON
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.
182ms
Document set sensor
Copy start
The scanner is shifted
to the exposure position.
(SPF side)
SPF motor rotation
SPFM rotation
Document transport sensor
SPPD ON
Document transport
(Exposure)
(Document exit)