Epson GT-12000 Service Manual download pdf (Page 88)

ADF Operating Principles

Rev. A

5. The document is transported until the rear edge passed the

document stopper, then the transportation motor stops rotating.

6. The transportation motor rotates backward to move the document

back until it bumps against the paper stopper, and the motor stops.

With the document aligned with the stopper, paper skew is corrected

and the document is ready to be scanned. The ADF sends the paper

feeding complete signal to the scanner.

7. While scanning is proceeding, the paper feed motor starts rotating

forward to pick up and transport the document. The motor stops when

the registration sensor comes on.

8. After the registration operation is carried out, the paper feed motor

rotates forward to transport the document to the position where the

timing sensor comes on, and the pre-feeding operation is done. Then

the ADF sends the operation complete signal to the scanner.

10 mm

Figure 2-6. Single Feeding (Step 5)

Im pact

Figure 2-7. Single Feeding (Step 6)

Figure 2-8. Single Feeding (Step 7)

Figure 2-9. Single Feeding (Step 8)

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Epson GT-12000 Service Manual Page 88