Chapter 8
8-10
A pattern image for image gradation correction
Image gradation correction pattern is formed on the position away from ETB center to right and left in the following order.
ETB 1st round
1) Pattern image for adjustment of LED light intensity
Y, C, M pattern is printed on the left side only.
This pattern is to adjust the light intensity of the LED for the color displacement/image density sensor (left).
2) Pattern for timing reference
Bk pattern is printed on the same position at right and left.
This pattern is to measure the timing of step 3), 4) and 5).
3) ETB base
The machine measures the ETB base condition of the same position with the halftone patch that is measured at the 2nd round of ETB.
This is to measure the density of halftone patch accurately. The timing is determined with using the pattern printed at step 2).
ETB 2nd round
4) Pattern for density condition
Halftone patch of Bk, Y, C, M is printed on the left side only.
Measures the density condition of each color. The timing is determined with using the pattern printed at step 2).
5) Pattern for turn-on density detection
Halftone patch of Bk, Y, C, M is printed on the right side only.
This is to detect the turn-on density of each color (the printable minimum density). The timing is determined with using the pattern printed at step 2).
F-8-15
Vertical synchronous
signal position
Vertical synchronous
signal position
1) Pattern image for adjustment
of LED light intensity
2) Pattern for timing reference
3) ETB base
ETB 1st round
ETB 2nd round
4) Pattern for
density condition
5) Pattern for turn-on
density detection
The pattern printed
at ETB 1st round
Содержание iR C1020 Series
Страница 1: ...Sep 8 2008 Service Manual iR C1020 Series iR C1021i ...
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Страница 18: ...Contents ...
Страница 19: ...Chapter 1 Introduction ...
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Страница 57: ...Chapter 2 Installation ...
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Страница 73: ...Chapter 3 Basic Operation ...
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Страница 81: ...Chapter 4 Main Controller ...
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Страница 97: ...Chapter 5 Original Exposure System ...
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Страница 113: ...Chapter 6 Original Feeding System ...
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Страница 133: ...Chapter 7 Laser Exposure ...
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Страница 143: ...Chapter 8 Image Formation ...
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Страница 181: ...Chapter 9 Pickup and Feed System ...
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Страница 215: ...Chapter 10 Fixing System ...
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Страница 233: ...Chapter 11 External and Controls ...
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Страница 263: ...Chapter 12 e maintenance imageWARE Remote ...
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Страница 281: ...Chapter 13 Maintenance and Inspection ...
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Страница 287: ...Chapter 14 Measurement and Adjustments ...
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Страница 293: ...Chapter 15 Correcting Faulty Images ...
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Страница 304: ...Chapter 15 15 8 15 3 2 2 Fans 0019 5064 F 15 11 T 15 3 Notation Name FM1 main unit fan FM2 duplex fan FM2 FM1 ...
Страница 313: ...Chapter 15 15 17 F 15 19 21 22 28 29 30 31 24 14 15 16 23 26 25 32 27 20 19 18 17 2 13 6 10 33 1 8 4 3 12 11 5 7 9 ...
Страница 317: ...Chapter 16 Error Code ...
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Страница 333: ...Chapter 17 Special Management Mode ...
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Страница 345: ...Chapter 18 Service Mode ...
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Страница 389: ...Chapter 19 Upgrading ...
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Страница 396: ...Chapter 19 19 4 3 Click Next F 19 4 4 Select a USB connected device and click Next F 19 5 ...
Страница 397: ...Chapter 19 19 5 5 Click Start F 19 6 6 Click Yes F 19 7 Download will be started F 19 8 ...
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Страница 401: ...Chapter 20 Service Tools ...
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