41956001TH Rev.1
37 /
Oki Data CONFIDENTIAL
2.6
Color Misalignment Correction
C9500/C9300, which is equipped with plural LED heads, causes color misalignment. The
mechanically occurred color misalignment is automatically corrected as follows:
(1)
Color alignment to be corrected
1
Color misalignment in X-axis direction (Positional error caused by LED head)
2
Color misalignment in slanting direction (Positional error caused by LED head)
3
Color misalignment in Y-axis direction (Positional error caused by I/D unit and LED head)
(2)
Correcting
Printing the preset color misalignment detection pattern on the belt and, by a reflection
sensor, reading the printed pattern detects each color’s misalignment value to determine its
correction value. The correction value is used to change each color’s (Cyan, Magenta and
Yellow) writing timing in comparison with that of Black.
2.7
Transfer Control Responds to Environmental Changes (Room Temperatures and
Relative Humidities)
C9500/C9300 measures room temperature and relative humidity using a room temperature
sensor and humidity sensor, and calculates an optimum transfer voltage under its measurement
environment to perform real-time control on printing with the optimum voltage.
Environmental sensing table
empe-
rature
(
°
C)
Humidity (%)
Sensor reading
Sensor reading
Register reading
N/L1
N/L1
N/L2
N/N
H/H
H/H
H/H
H/H
H/H
N/L2
N/N
L/L
N/L1
H/L
H/L
Tempe-
rature
(
°
C)
Humidity (%)
Sensor reading
Sensor reading
Register reading
8
8
8
8
7
7
7
6
6
8
8
8
7
7
6
6
6
5
8
8
7
7
6
6
5
4
4
7
7
7
6
5
4
4
2
2
7
7
6
5
4
4
2
1
1
7
6
5
4
4
3
1
1
1
7
6
5
4
3
1
1
1
1
6
5
4
3
3
1
1
1
1
6
5
4
3
2
1
1
1
1
H/H
H/H
H/H
H/H
Summary of Contents for C9500dxn
Page 48: ...41956001TH Rev 1 48 Oki Data CONFIDENTIAL 3 2 Parts Layout Figure 3 1...
Page 49: ...41956001TH Rev 1 49 Oki Data CONFIDENTIAL Figure 3 2 Top Cover Assy...
Page 50: ...41956001TH Rev 1 50 Oki Data CONFIDENTIAL Figure 3 3 Printer Unit 1 2...
Page 51: ...41956001TH Rev 1 51 Oki Data CONFIDENTIAL Figure 3 4 Printer Unit 2 2...
Page 52: ...41956001TH Rev 1 52 Oki Data CONFIDENTIAL Figure 3 5 Cassette Guide Assy L R...
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Page 54: ...41956001TH Rev 1 54 Oki Data CONFIDENTIAL A B C D E A B C D E Figure 3 6 Duplex Unit...
Page 112: ...41956001TH Rev 1 112 Oki Data CONFIDENTIAL Pattern 5 Pattern 6 Pattern 7...
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