Chapter 7
7-13
F-7-17
[1] Drum/ITB motor drive signal
[2] Photosensitive drum
[3] Primary charging roller
[4] Primary charging AC bias drive signal
[5] Internal data
[6] Drum count
[7] Drum film thickness detection data
MEMO:
The drum film thickness-related data stored in EEPROM may be either drum count or drum film thickness detection data, the drum film thickness count being
internal data and used when determining bias levels.
7.3.4 ATR Control
0013-8486
/ / / / iR C3380i / iR C3380 / iR C2880i / iR C2880
The machine executes ATR control to supply toner so that the ratio between toner and carrier inside the drum unit may remain ideal.
1. timing for start-up
- When new drum unit is installed
- every print (video count)
- every 80-sheet (patch image reading sensor)
2. Particulars of Control
The machine computes the amount of toner to supply for each color, and supplies it to the drum unit.
The machine uses the following 2 types of data to compute toner amounts:
- Video Count (for each print)
The machine uses the video data arriving from the main controller to compute the amount of toner consumed, and makes up for it by supplying the drum unit
with the same amount.
- Result of Detection by the Patch Image Read Sensor (to every 80-sheet *1)
The machine measures the toner image formed on the ITB using the patch image read sensor, and supplies the drum unit so that the density will be identical to
the target density.
*1: The condition of execution is based on printing an original with an image ratio of 25%.
Y
M
C
BK
Y
M
C
BK
Y
M
C
BK
M1
D-CON
EEPROM
HVT1
[3]
[4]
[6]
[2]
[1]
[5]
[7]
Содержание iR C2880 series
Страница 1: ...Aug 29 2006 Service Manual iR C3380 2880 Series ...
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Страница 23: ...Chapter 1 Introduction ...
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Страница 53: ...Chapter 2 Installation ...
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Страница 127: ...Chapter 3 Basic Operation ...
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Страница 137: ...Chapter 4 Main Controller ...
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Страница 161: ...Chapter 5 Original Exposure System ...
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Страница 188: ...Chapter 5 5 24 F 5 68 4 Remove the original sensor 2 hook 1 F 5 69 ...
Страница 189: ...Chapter 6 Laser Exposure ...
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Страница 207: ...Chapter 7 Image Formation ...
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Страница 257: ...Chapter 8 Pickup Feeding System ...
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Страница 303: ...Chapter 9 Fixing System ...
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Страница 321: ...Chapter 10 Externals and Controls ...
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Страница 336: ...Chapter 10 10 10 F 10 10 2 Remove the check mark from SNMP Status Enabled ...
Страница 337: ...Chapter 10 10 11 F 10 11 ...
Страница 359: ...Chapter 11 MEAP ...
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Страница 401: ...Chapter 12 RDS ...
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Страница 411: ...Chapter 13 Maintenance and Inspection ...
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Страница 416: ...Chapter 13 13 2 F 13 1 8 9 1 2 3 3 5 6 7 10 11 12 13 14 4 ...
Страница 421: ...Chapter 14 Standards and Adjustments ...
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Страница 431: ...Chapter 15 Correcting Faulty Images ...
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Страница 459: ...Chapter 16 Self Diagnosis ...
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Страница 481: ...Chapter 17 Service Mode ...
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Страница 571: ...Chapter 18 Upgrading ...
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Страница 603: ...Chapter 19 Service Tools ...
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Страница 605: ...Contents Contents 19 1 Service Tools 19 1 19 1 1 Special Tools 19 1 19 1 2 Solvents and Oils 19 2 ...
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Страница 609: ...Aug 29 2006 ...
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