Detecting Whether The Document Being Fed Is The Last Document Or Not - Canon DADF-H1 Service Manual

CHAPTER 2 OUTLINE OF OPERATION

2.3.3 Detecting whether the document being fed is the last document or not

The end-of-document sensor (PI5) detects whether the document being picked up is the
last document in the document tray or not.
When the last document is picked up and the trailing sheet of the document passes the last
document detection lever in the document tray, the detection lever works in synchronization
with the shading plate to cover the photointerrupter. This allows the end-of-document sen-
sor (PI5) to generate a last document detection signal (ENDS), notifying the host that the
paper being picked up is the last document in the document tray.
Document
2-18
ADF controller PCB
Detection lever
PI5
F02-203-01b
COPYRIGHT © 2001 CANON INC. 2000 2000 2000 2000 CANON DADF-H1 REV.0 MAR. 2001