Canon iR105 Series, Service Manual

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COPYRIGHT© 2001 CANON INC. 2000 2000 2000 2000 CANON iR105 REV.0 JULY 2001
CHAPTER 2 NEW FUNCTIONS
2-43
3.7 Detecting the Orientation of Originals
The orientation of an original placed in the ADF is detected in relation to the direction of
the test area of the original by reading text data. The GP605 (iR600) detects the orientation
of each original, making necessary changes for each if necessary. On the other hand, the ma-
chine detects the orientation of only the first original, and uses the detected orientation as a
reference for changes needed for subsequent pages. The machine uses the result of detection
to determine the following:
• binding margin position
• stapling position
• layout orientation for reduced page composition
As needed, the machine rotates the image, thereby reducing waste of paper. The time it
saves from not having to detect the orientation of all originals also helps increase its produc-
tivity.
F02-307-01
Reader controller PCB
Flash ROM
Text area
extraction block
Text data
storage block
Text direction
identification block
Image data
Language dictionaries
are stored.
To increase processing speed, the
image data is processed into binary
data and stored.
The stored text data is
matched against the
fonts in the dictionary
to find out the direction
of characters.
All image data is
collected, and the text
area is identified.
The result of detection is sent to
the reader controller
[1] 0˚
[2] 90˚
[3] 180˚
[4] 270˚
[5] not know (output as is)
8
2
Dictionary
storage block
0˚
90˚
180˚
270˚