When The Start Key Is Pressed - Olivetti d-Color 201MF Theory Of Operation

Theory of Operation Ver. 1.0 Sep. 2008
7.3.2

When the Start key is pressed

A. Document read mode
• The document is read in either of the following two modes: the original cover mode, in
which the original is directly placed on the original glass; and the DF mode, in which the
document is loaded in the automatic document feeder.
(1) Original cover mode
1. The press of the Start key turns ON the exposure lamp.
2. The exposure unit moves from the home position to the shading position to make a
shading correction.
3. The exposure unit moves from the shading position to the scan start position.
4. The exposure unit moves from the scan start position toward the image trailing
edge direction.
Reading of the image of the original is started with the image leading edge posi-
tion.
Reading of the image of the original is completed at the image trailing edge posi-
tion.
5. After the image of the original has been read, the exposure lamp turns OFF.
6. The exposure unit moves from the image trailing edge position to the home posi-
tion.
The R, G, and B data are stored in memory through a single scan motion, so the
scan sequence is carried out only once even for color copying.
Shading position
Exposure unit
Shading position
Home position
Shading correction
Scan start position
Y109670-2
Leading edge of the image
Home position
Exposure lamp (FL201) ON
Scan
Return
Theory of Operation
7. Scanner section (IR section)
Original
Back edge of the image
Back edge of the image
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