Toshiba e-STUDIO520 Service Manual page 369

4) Start of feeding
The document feed motor (M37) starts to rotate in reverse. After the document feed motor (M37)
has finished accelerating, the read motor (M36) starts to rotate forward.
Both the document feed and read motors (M37, M36) start to slow down when the leading edge of
the original has come to a specified distance before the read sensor (S69).
The original is transported a specified distance by the read motor (M36) after the read sensor (S69)
detects the leading edge of the original. Then after the original size is detected and the idle revers-
ing is judged to be necessary, both the document feed and read motors (M37, M36) start to acceler-
ate and the large original exit solenoid (SOL5) turns ON.
The large original exit motor (M39) starts to rotate in reverse when the leading edge of the original
has been transported to the large original exit side and passed the 3rd roller.
When the original registration sensor (S55) detects the trailing edge of the original, the document
feed motor (M37) stops rotating and the tray lift motor (M38) starts to rotate to lift the tray. Then the
tray lift motor (M38) stops lifting the tray when a specified number of counts is counted after the lift-
ing tray upper limit detection sensor (S59) has detected the top side of the original.
The original empty sensor (S60) detects whether or not there is a next original when a specified time
passes after the original registration sensor (S55) has detected the trailing edge of the original. With
a next original, separating begins.
Without it, the tray lift motor (M38) starts to rotate to lower the tray and the original set signal is reset.
The tray lift motor (M38) stops rotating when the lifting tray lower limit detection sensor (S62) has
detected the tray.
The large original exit motor (M39) starts to slow down when the trailing edge of the original has pro-
ceeded a specified distance after passing the 4th roller. After the large original exit sensor (S68) has
detected the trailing edge of the original, the read motor (M36) stops rotating soon and the large
original exit motor (M39) stops rotating when the original has proceeded a specified distance. The
original is nipped by the large original exit roller.
March 2005 © TOSHIBA TEC
Fig.16-59
Fig.16-60
e-STUDIO520/600/720/850 REVERSING AUTOMATIC DOCUMENT FEEDER (RADF)
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