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AR-M550/M620/M700 DETAILS OF EACH SECTION 6 - 113
7. SPF section
A. General
Sheet documents are automatically fed and transported for continuous
scanning.
The front and the back surfaces of duplex sheet documents can be
scanned at a time.
B. Operational descriptions
(1) Timing chart
To increase the document replacement speed, preliminary feed is per-
formed for the second and the following documents when two or more
documents of A4/Letter size or smaller are scanned.
For this purpose, each transport roller is provided with a clutch to per-
form independent control.
In addition, an electromagnetic brake is employed for each transport
roller because it reduces the motor load when compared with the
mechanical brake.
No.
Name
Function
1
Document tray
Paper feed tray for documents. Max. loading capacity of documents: 150 sheets (80g/m²) or 19.5mm or less
2
Pickup roller
Picks up a document and transports it to the document feed roller.
3
Document feed roller
Feeds documents.
4
Separation roller
Separates paper to prevent against double feed.
5
No. 1 resist roller
Performs document feed resist.
6
Transport roller 1 (Drive)
Transports documents.
7
Transport roller 2 (Drive)
Transports documents.
8
No. 2 resist roller
Makes synchronization between the document lead edge and the scan start position.
9
Paper exit roller (Drive)
Discharges documents.
10
CIS unit
Scans the back surface of a document.
1
2
3
5
4
6
7
8
9
10
Default 37mm (102.8ms)
SIM adjustment
(Image lead edge alignment)
Default 26mm (72.3ms)
SIM adjustment (Image rear edge alignment)
10 ms
923 ms
50 ms
(18mm)
50 ms
(18mm)
50 ms
167 ms
(60mm)
67 ms
SIM adjustment
67 ms (24mm)
SIM adjustment
167 ms
(60mm)
30 ms
50 ms
(18mm)
10 ms
36 ms
SIM adjustment
50 ms
(18mm)
10 ms
5 ms
10 ms
10 ms
5 ms
5 ms
10 ms
5 ms
Timer from SPF motor ON
SPFC
Document feed clutch
SPFMCLK1, 2
SPFFAN
Fan motor
COPY key ON
SPPD3
SPPD4
STRC
Document transport clutch
SPPD1
Document transport sensor 1
SPPD2
Document transport sensor 2
SRRC
Resist clutch
SPOD
Document exit sensor
Scanner scan
CIS scan
Document transport sensor 3
Document transport sensor 4
Resist brake clutch
SRRBC
Document transport brake clutch
STRBC
ON when scan ready OK (cycle time 923ms)
OFF after 18mm (50ms) of SPPD3 off
Transport speed 360mm/s
Letter (216mm) 65 sheets (Single surface)
STRRBC
Document transport resist brake clutch
Document transport resist clutch
STRRC
ON simultaneously with print start
OFF when the last paper SPOD off
First sheet ON simultaneously with the second ON of SPFC (paper feed CL)
OFF after 18mm (50ms) from SPPF1 off
Second and the following sheets ON simultaneously with SRRC on
OFF after 18mm (50ms) from SPPD1 off
First sheet: Paper feed start after booting the motor (Clutch ON)
Off at 24mm (67ms) from SPPD1 on (SIM adjustment)
ON again after 30ms from OFF, and OFF after 60mm (167ms)
Second and the following sheets: The 2nd sheet start simultaneously with SPPD1 off (Clutch ON)
OFF at 24mm (67ms) from SPPD1 on (SIM adjustment)
ON simultaneously with SRRC on, and OFF after 60mm (167ms)
First sheet ON simultaneously with SPPD1 on
Second and the following sheets OFF before10ms of STRRC on
ON after 5ms of STRRC off
First sheet ON simultaneously with STRRC
and OFF simultaneously with SPPD3 on
ON before 36ms (SIM adjustment) of SRRC on
ON after 5ms of STRC off
OFF before 10ms of STRC on
ON simultaneously with SPPD3 on
OFF before 10ms of SRRC on
Содержание AR-M550N
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