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2-10
COPYRIGHT © 2006 CANON ELECTRONICS INC. CANON DR-1210C FIRST EDITION FEB. 2006
CHAPTER 2 FUNCTION & OPERATION
2. Sequence of Operation
The figure below shows a timing chart of
the feeder scanning in case where the machine
uses a document of two sheets and the default
conditions (black and white, 300 dpi, A4).
Start
End
Document sensor
Scanner motor
Feed motor
1st document
2nd document
ADF sensor
1st document
2nd document
Document reading
Reading position
H/P
Pickup
Reading speed
Reading speed Eject
Figure 2-303
When the scanning start signal is output
while the document sensor is set on and
preparation including warming up of the
fluorescent lamp is complete, the scanner
motor starts running and moves the reading
unit to the reading position for the feeder
scanning. Then the feed motor runs at the
pickup speed and sends the 1st document to
the feed section. After feeding the docu-
ment for the specified length, the feed motor
keeps feeding at the changed reading speed
appropriate to the scanning conditions. Im-
age reading starts after the ADF sensor is
set on and the specified length of document
is fed. The document is scanned for a length
appropriate to the scanning conditions.
The feed motor keeps running until the
1st document is fed to the eject area and the
2nd document, to the position just before the
ADF sensor. The feed motor restarts feed-
ing at the reading speed after the machine
completes sending of the image data of the
1st document.
The machine repeats the same proce-
dures to read the image of the 2nd docu-
ment. Then the feed motor stops for a
moment, then ejects the document at the
eject speed. When the pickup area has no
more document and the document sensor is
turned off, the machine determines the
present document as the last one and ejects
it at the eject speed.
Error signal “Paper Jam” is output in the
following events.
Even after the machine starts feeding and
the specified time passes, the ADF sen-
sor does not detect the document.
Even after the ADF sensor detects the
document and the specified time passes,
the ADF sensor detects the document.