COPYRIGHT © 2005 CANON ELECTRONICS INC. CANON DR-2580C FIRST EDITION APR. 2005
2-13
CHAPTER 2 FUNCTION & OPERATION
Analog signals proportionate to the den-
sity of each picture element are output to the
analog processor on the control PCB from the
CIS PCB.
The analog processor carries out offset
adjustment, gain adjustment, and A/D con-
version. Analog signals are converted into
12bit digital signals in the analog processor.
Then the image data is transferred to the data
controller and the resolution is converted from
12 bits to 8 bits.
After that, the image data is output to the
computer through an USB interface.
All the image processing carried out in this
machine are described above. Other image
processing are carried out inside the com-
puter.
The computer performs the image proc-
essing according to the user settings after the
shading correction.
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