EPSON EPL-C8000
Rev. B
Chapter 2
OPERATING PRINCIPLES
2-60
2.7.8 IBT Control
2.7.8.1 First Transfer (Drum
→
Belt)
Transferring the toner image on the drum onto the belt is called the First
Transfer. The First Transfer is done when the HVPS outputs power to
the 1st BTR.
(1) First Transfer Current (Flow)
The resistance of the 1st BTR changes due to time and
environment. To obtain a stable transfer, it is necessary to adjust
this resistance by adjusting the transfer current. The following is a
flowchart showing how 1st transfer current is determined.
Figure 2-47. First Transfer Current Flow
O u t p u t t h e p r e d e t e r m i n e d c u r r e n t t o t h e 1 s t B T R t o
m o n i t o r t h e 1 s t B T R r e s i s t a n c e .
M o n i t o r s t h e o u t p u t v o l t a g e o b t a i n e d f r o m t h e
p r e d e t e r m i n e d c u r r e n t ( a s a s u b s t i t u t e f o r t h e r e s i s t a n c e v a l u e )
C a l c u l a t e t h e 1 s t t r a n s f e r c u r r e n t a c c o r d i n g t o t h e o u t p u t
v o l t a g e m o n i t o r e d .
N o t e : T h e r e a r e t h r e e t y p e s o f 1 s t t r a n s f e r c u r r e n t f o r t h e
o u t p u t v o l t a g e r a n g e s - H i g h , M i d d l e a n d L o w .
A d j u s t t h e 1 s t t r a n f e r c u r r e n t a c c o r d i n g t o t h e D r u m u s a g e .
N o t e : T h e D r u m s u r f a c e c h a r a c t e r i s t i c s c h a n g e s a c c o r d i n g t o u s e .
D e t e r m i n e t h e 1 s t t r a n s f e r t o u s e i n p r i n t i n g .
Содержание ColorPage EPL-C8000
Страница 1: ...EPSONColorPageEPL C8000 Color Laser Printer 4009762 SERVICE MANUAL ...
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Страница 15: ...C H A P T E R 1 PRODUCTDESCRIPTIONS ...
Страница 59: ...C H A P T E R 2 OPERATINGPRINCIPLES ...
Страница 80: ...EPSON EPL C8000 Rev B Chapter 2 OPERATING PRINCIPLES 2 19 2 3 5 Gear Layout Figure 2 23 Gear Layout ...
Страница 88: ...EPSON EPL C8000 Rev B Chapter 2 OPERATING PRINCIPLES 2 27 Figure 2 29 Paper Transportation ...
Страница 91: ...EPSON EPL C8000 Rev B Chapter 2 OPERATING PRINCIPLES 2 30 Figure 2 31 Xerographics II ...
Страница 93: ...EPSON EPL C8000 Rev B Chapter 2 OPERATING PRINCIPLES 2 32 Figure 2 32 Development ...
Страница 97: ...EPSON EPL C8000 Rev B Chapter 2 OPERATING PRINCIPLES 2 36 Figure 2 35 Fusing I ...
Страница 99: ...EPSON EPL C8000 Rev B Chapter 2 OPERATING PRINCIPLES 2 38 Figure 2 36 Fusing II ...
Страница 102: ...EPSON EPL C8000 Rev B Chapter 2 OPERATING PRINCIPLES 2 41 Figure 2 38 Drives ...
Страница 104: ...EPSON EPL C8000 Rev B Chapter 2 OPERATING PRINCIPLES 2 43 Figure 2 39 Electrical ...
Страница 138: ...EPSON EPL C8000 Rev B Chapter 2 OPERATING PRINCIPLES 2 77 Figure 2 54 C235MAIN Board Circuit Diagrams 2 5 6 ...
Страница 140: ...C H A P T E R 3 DISASSEMBLYANDASSEMBLY ADJUSTMENT ...
Страница 269: ...C H A P T E R 4 DIAGNOSTICS ...
Страница 332: ...C H A P T E R 5 TROUBLESHOOTING ...
Страница 452: ...C H A P T E R 6 MAINTENANCE ...
Страница 471: ... APPENDIX ...
Страница 479: ...EPSON EPL C8000 Rev B Chapter A APPENDIX A 7 Figure A 2 PL2 1 Paper Tray I Figure A 3 PL2 2 Paper Tray II ...
Страница 480: ...EPSON EPL C8000 Rev B Chapter A APPENDIX A 8 Figure A 4 PL3 1 Paper Feeder Figure A 5 PL4 1 Multi Sheet Insert I ...
Страница 483: ...EPSON EPL C8000 Rev B Chapter A APPENDIX A 11 Figure A 10 PL6 1 Xerographics Figure A 11 PL7 1 Development I ...
Страница 484: ...EPSON EPL C8000 Rev B Chapter A APPENDIX A 12 Figure A 12 PL7 2 Development II Figure A 13 PL8 1 IBT I ...
Страница 485: ...EPSON EPL C8000 Rev B Chapter A APPENDIX A 13 Figure A 14 PL8 2 IBT II Figure A 15 PL8 3 IBT III ...
Страница 486: ...EPSON EPL C8000 Rev B Chapter A APPENDIX A 14 Figure A 16 PL8 4 IBT IV Figure A 17 PL9 1 Fusing I ...
Страница 487: ...EPSON EPL C8000 Rev B Chapter A APPENDIX A 15 Figure A 18 PL9 2 Fusing II Figure A 19 PL9 3 Fusing III ...
Страница 488: ...EPSON EPL C8000 Rev B Chapter A APPENDIX A 16 Figure A 20 PL9 4 Fusing IV Figure A 21 PL10 1 Paper Exit I ...
Страница 489: ...EPSON EPL C8000 Rev B Chapter A APPENDIX A 17 Figure A 22 PL10 2 Paper Exit II Figure A 23 PL11 1 Drive ...
Страница 490: ...EPSON EPL C8000 Rev B Chapter A APPENDIX A 18 Figure A 24 PL12 1 Frame Figure A 25 PL 13 1 Electrical I ...
Страница 491: ...EPSON EPL C8000 Rev B Chapter A APPENDIX A 19 Figure A 26 PL13 2 Electrical II Figure A 27 PL14 1 Controller ...
Страница 493: ...EPSON EPL C8000 Rev B Chapter A APPENDIX A 21 Figure A 29 P J Location 2 Figure A 30 P J Location 3 ...
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Страница 501: ...EPSON EPL C8000 Rev B Chapter A APPENDIX A 29 Figure 1 36 Master Wiring Diagram ...
Страница 506: ...EPSON EPL C8000 Rev B Chapter A APPENDIX A 34 Figure 1 37 Wiring Diagram 1 ...
Страница 508: ...EPSON EPL C8000 Rev B Chapter A APPENDIX A 36 Figure 1 38 Wiring Diagram 2 ...
Страница 510: ...EPSON EPL C8000 Rev B Chapter A APPENDIX A 38 Figure 1 39 Wiring Diagram 3 ...
Страница 512: ...EPSON EPL C8000 Rev B Chapter A APPENDIX A 40 Figure 1 40 Wiring Diagram 4 ...
Страница 514: ...EPSON EPL C8000 Rev B Chapter A APPENDIX A 42 Figure 1 41 Wiring Diagram 5 ...
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Страница 520: ...EPSON EPL C8000 Rev B Chapter A APPENDIX A 48 Figure 1 44 Wiring Diagram 8 ...
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Страница 531: ...EPSON EPL C8000 Rev B Chapter A APPENDIX A 59 A 4 Component Layout Figure 1 50 C235MAIN 1 ...
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Страница 544: ...EPSON EPL C8000 Rev B Chapter A APPENDIX A 72 Figure A 54 PL22 1 Feeder 3 Figure A 55 PL22 2 Feeder 4 ...
Страница 545: ...EPSON EPL C8000 Rev B Chapter A APPENDIX A 73 A 6 5 Wiring Diagrams Figure 1 56 Master Wiring Diagram ...