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Chapter 7
7-32
7.5 Drum Unit
7.5.1 Drum Unit
7.5.1.1 Overview
0014-0776
Color iR C3380G / Color iR C2880G / Color iR C3380i / Color iR C3380 / Color iR C2880i / Color iR C2880 / iR C3480 / iR C3480i / iR C3080 / iR C3080i / iR
C2550
The machine uses 4 drum units (Y, M, C, Bk), each consisting of a drum unit, developing cylinder, primary charging roller, and carrier and housed under the ITB.
The machine supplies toner as follows:
The toner coming from the hopper assembly is moved to the toner transport feedscrew A of the drum unit; then, it is moved farther by the toner transport feedscrew
B while being mixed with carrier to reach the developing cylinder. During printing, a layer of toner is formed on top of the layer of carrier deposited on the devel-
oping cylinder; the toner then jumps (toner projection) to the photosensitive drum for development.
The residual toner on the developing assembly after development is scraped off by the cleaning blade, and is moved by the waste toner feedscrew for collection
inside the waste toner case.
The following 3 types of electrical loads are associated with the supply path:
- motor: 2 types (development motor, drum/ITB motor)
- clutch: 1 type (developing sleeve clutch)
F-7-37
[1] Developing cylinder
[2] Photosensitive drum
[3] Waste toner feedscrew
[4] Primary charging roller
[5] Carrier
[6] Toner transport feedscrew A
[7] Toner transport feedscrew B
M1: drum/ITB motor
M2 and M3: development motor
CL1 through CL4: developing sleeve clutch
D-CON
Toner
M1
CL1 4
M2 3
[1]
[2]
[3]
[4]
[5]
[6]
[7]
Содержание CiRC2550
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Страница 27: ...Chapter 1 Introduction ...
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Страница 47: ...Chapter 1 1 18 F 1 14 ON OFF ON OFF ...
Страница 70: ...Chapter 1 1 41 5 Turn on the main power switch ...
Страница 79: ...Chapter 2 Installation ...
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Страница 85: ...Chapter 2 2 3 Not available in some regions ...
Страница 134: ...Chapter 3 Basic Operation ...
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Страница 143: ...Chapter 4 Main Controller ...
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Страница 152: ...Chapter 4 4 6 F 4 6 CPU HDD ROM access to the program at time of execution ...
Страница 171: ...Chapter 5 Original Exposure System ...
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Страница 203: ...Chapter 6 Laser Exposure ...
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Страница 220: ...Chapter 7 Image Formation ...
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Страница 277: ...Chapter 8 Pickup Feeding System ...
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Страница 336: ...Chapter 9 Fixing System ...
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Страница 357: ...Chapter 10 Externals and Controls ...
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Страница 366: ...Chapter 10 10 4 F 10 2 F 10 3 FM1 FM2 FM5 FM8 FM11 FM4 FM3 FM6 FM7 FM9 FM10 ...
Страница 375: ...Chapter 10 10 13 F 10 10 2 Remove the check mark from SNMP Status Enabled ...
Страница 376: ...Chapter 10 10 14 F 10 11 ...
Страница 402: ...Chapter 11 MEAP ...
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Страница 452: ...Chapter 12 RDS ...
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Страница 464: ...Chapter 13 Maintenance and Inspection ...
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Страница 469: ...Chapter 13 13 2 F 13 1 8 9 1 2 3 3 5 6 7 10 11 12 13 14 4 ...
Страница 474: ...Chapter 14 Standards and Adjustments ...
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Страница 486: ...Chapter 15 Correcting Faulty Images ...
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Страница 495: ...Chapter 15 15 4 F 15 2 COLOR M 1 COLOR Y C K 0 ...
Страница 569: ...Chapter 15 15 78 F 15 82 J102 J107 J103 J108 J101 J109 J106 J112 J115 J113 J114 J104 J105 ...
Страница 570: ...Chapter 16 Self Diagnosis ...
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Страница 600: ...Chapter 17 Service Mode ...
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Страница 712: ...Chapter 18 Upgrading ...
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Страница 746: ...Chapter 19 Service Tools ...
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Страница 748: ...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 752: ...APPENDIX ...
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