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The image roller surface is charged to about –750 V by the contact charge of the charge roller.
When the light from the LED head irradiates the image drum surface, the light energy
generates positive and negative carriers in the CGL. The positive carriers are moved to the
CTL by an electrical field acting on the image drum. Likewise, the negative carriers flow into
the aluminum layer (ground).
The positive carriers moved to the CTL combine with the negative charges on the image drum
surface accumulated by the contact charge of the charge roller, lowering the potential on the
image drum surface. The resultant drop in the potential of the irradiated portion of the image
drum surface forms an electrostatic latent image on it. The irradiated portion of the image
drum surface is kept to about –100 V.
(V)
–750
–100
0
Light
from
LED
Image drum
surface potential
Charged part
Part
irradiated
by
LED
Charged
part
Содержание OKIPAGE 12i Series
Страница 6: ...1 CONFIGURATION...
Страница 12: ...1 6 7 Flash memory SIMM...
Страница 17: ...2 OPERATION DESCRIPTION...
Страница 28: ...2 11 PRINT N OUT Sensor OFF PRDY N DM ON N RM ON INSNS OUTSNS N Feed stop IN Sensor OFF Feed start Figure 2 5...
Страница 48: ...3 PARTS REPLACEMENT...
Страница 52: ...3 4 Upper cover unit Figure 3 2 Upper cover...
Страница 80: ...4 ADJUSTMENT...
Страница 88: ...5 PERIODICAL MAINTENANCE...
Страница 92: ...6 TROUBLESHOOTING PROCEDURES...
Страница 125: ...6 33 Figure 6 5 Contact Power supply sensor board Contact plate for transfer roller...
Страница 126: ...7 WIRING DIAGRAM...
Страница 140: ...8 PARTS LIST...
Страница 144: ...8 4 Figure 8 2 Upper cover unit 1...
Страница 145: ...8 5 Table 8 2 Upper cover unit No Name Rating Part No Use Remarks ODA Part No Cover Upper 1 1 40715101...
Страница 146: ...8 6 Figure 8 3 Base unit 16 17 29 9 18 6 13 2 20 21 27 19 22 24 1 4 19 22 25 15 26 28 3 12 20 21 8 5 7 10 11 23...
Страница 168: ...E 1 Appendix E Multi Purpose Feeder Maintenance...
Страница 187: ...E 20 5 2 PCB Layout OLEV 11 PCB CN3 CN2 SEN2...
Страница 188: ...E 21 6 PARTS LIST Figure 6 1 Multi Purpose Feeder 9 5 7 6 4 1 2 3 8...
Страница 190: ...F 1 Appendix F High Capacity Second Paper Feeder Maintenance Manual...
Страница 206: ...F 17 5 2 PCB Layout TQSB 2 PCB CONTROLLER MOTOR DRIVER SEN2 SEN1 OSC PU MOTOR...
Страница 207: ...F 18 Figure 6 1 High Capacity Second Paper Feeder 1 2 4 3 5 6 PARTS LIST...
Страница 210: ...F 21 SECTION1 CABINET CASSETTE ASSEMBLY 5 6 3 25 2 4 7 8 1...
Страница 211: ...F 22 SECTION2 MECHANICAL ASSEMBLY 21 9 11 10 12 13 23 22 14 24 15 16 17 19 18 20 A A B B...
Страница 213: ...G 1 Appendix G Network Option Board Maintenance...
Страница 226: ...Oki Data Corporation 4 11 22 Shibaura Minato ku Tokyo 108 8551 Japan Tel 03 5445 6162 FAX 03 5445 6189...