Epson GT-1200, Service Manual

Page: 94 / 157

ADF Operating Principles
Rev. A
2-9
13. The transportation motor rotates forward and then the paper feed
motor rotates backward to transport the pre-fed document to the
platen glass. The document size is measured when the registration
sensor goes off, and the paper feed motor stops when the timing
sensor goes off. The flapper solenoid also comes on to switch the
paper path to the paper eject/reverse mechanism side.
14. After the paper feed motor stops, the transportation motor starts
transporting the document and stops when the leading edge of the
document is near the paper eject/reverse mechanism to wait for the
scanned document to be ejected completely. In case the empty
sensor goes off while transporting, the shutter solenoid goes off.
15. After the scanned document is ejected, the flapper solenoid comes
on to switch the paper path to the paper eject/reverse mechanism
side. The transportation motor and the paper eject/reverse motor
rotate forward to transport the fed document to the paper
eject/reverse mechanism.
16. When the paper eject/reverse sensor comes on, the transportation
motor stops. Then the paper eject/reverse motor stops to hold the
document in the paper eject/reverse mechanism.
Figure 2-31. Reverse Feeding (Step 13)
Figure 2-32. Reverse Feeding (Step 14)
Figure 2-33. Reverse Feeding (Step 15)
Figure 2-34. Reverse Feeding (Step 16)