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Sharp MX-M356N Service Manual page 254

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(2) Document scanning
The document scanning mode is available in 400dpi and 600dpi.
Resolution
400dpi
600dpi
(3) RSPF paper feed and transport operations
a. Paper feed operation
The transport motor is turned ON and the power of the transport
motor is transmitted to the pickup roller by turning ON the paper feed
clutch.
The pickup roller descends to pickup the top document and feed it to
the paper feed roller.
The paper feed roller feeds a document to the transport section.
At that time, the document is separated by the separation roller to pre-
vent double-feeding.
b. Single face scanning
The lead edge of the fed document is aligned (registration) by the reg-
istration roller, and passed through transport roller 1 to the document
scanning section, where images are scanned.
Then the document is passed through transport roller 2 to the paper
exit roller.
The rollers (the registration roller, transport rollers 1 and 2, the paper
exit roller) in the transport section are driven by the transport motor.
The paper exit roller (drive pulley) is pressed by the paper exit roller
pressure control solenoid.
When the read edge of the document passes the scanning section, the
both rollers are brought into close contact to supply the power for
paper exit.
1)
Document set (Document empty sensor ON)
2)
Paper feed start (1st sheet)
The pick-up roller descends. (The transport motor is booted. And
the paper feed clutch is ON.)
3)
Registration operation (1st sheet)
Document transport speed
279mm/sec
186mm/sec
MX-M316N OPERATIONAL DESCRIPTIONS 11 – 8
(Registration clutch ON)
(When a certain time passes after turning ON the registration
clutch, the paper feed clutch is turned OFF.)
4)
Scanning start (1st sheet)
5)
Paper feed start (2nd sheet)
6)
Scanning complete (1st sheet)/Registration operation (2nd sheet)
(When a certain time passes after turning ON the registration
clutch, the paper feed clutch is turned OFF.)
7)
Scanning start (2nd sheet)
8)
Paper exit complete (1st sheet)
9)
Scanning complete (2nd sheet)

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