Image Processing Reference
In-Depth Information
TABLE 10.12
Typical Values for Parameters a
i
, b
i
, and g
i
C
M
Y
K
a
2.798
2.490
2.064
6.907
b
2.706
4.897
8.447
1.355
g
1.033
1.180
1.448
r
0.007
0.000
0.000
0.019
Fi
n
al R
O
S pr
o
file
Final RO
S
profile
5
10
15
20
25
30
35
40
10
8
6
4
2
0
0
10
40
30
20
20
30
10
40
0
5
10
15
20
25
30
35
40
Fast scan
FIGURE 10.43
Effect of convolution along the slow-scan direction.
Final ROS profile
L
a
tent image
10
0
8
-100
Exposure
model
6
-200
-300
4
V
(
X
)
-400
2
-500
0
-600
0
0
10
40
40
10
30
20
30
20
20
30
20
10
30
40
10
0
Model
parameters
S
00
V
r0
V
k0
40
0
X
(ergs/cm
2
) Intensity profile
Latent image on the
photoreceptor (V)
FIGURE 10.44
Exposure of latent image on the photoconductor.
effect of beam spreading along the slow-scan direction. The effect of convolution
along the slow-scan direction is shown in Figure 10.43.
The next step is to obtain the latent image on the photoconductor by using the
laser intensity pro
le generated in Figure 10.43 with the exposure model shown in
Tables 10.3 and 10.4. Figure 10.44 shows the latent image after the dot printer
model pixel by pixel on the photoconductor.
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