Epson ColorPage EPL-C8000 Service Manual page 60

EPSON EPL-C8000
PRINT PROCESS .......................................................................................... 1
Print Process Overview ............................................................................. 1
Print Process - Major Components ........................................................... 2
Print Process Description .......................................................................... 3
(1) Charge ............................................................................................. 3
(2) Exposure .......................................................................................... 4
(3) Development .................................................................................... 5
(4) First Transfer (Drum Belt) .......................................................... 8
(5) Cleaning (Drum)............................................................................... 9
(6) Repeat (Forming a complete full-color toner image)...................... 10
(7) Second Transfer (Belt
(8) Detach............................................................................................ 13
(9) Cleaning (Belt) ............................................................................... 13
(10) Fusing .......................................................................................... 14
PRINT DATA FLOW .................................................................................... 15
Data Flow ................................................................................................ 15
DRIVER POWER TRANSMISSION PATH .................................................. 16
Process Motor Assembly......................................................................... 16
P/H Motor Assembly................................................................................ 17
Dispense Motor Assembly....................................................................... 18
Rotary Motor Assembly ........................................................................... 18
Gear Layout............................................................................................. 19
PAPER TRANSPORTATION....................................................................... 20
Paper Transportation Path (No Option)................................................... 20
MAIN COMPONENTS.................................................................................. 21
Paper Tray............................................................................................... 22
Paper Feeder .......................................................................................... 23
Multi Sheet Inserter (MSI) ....................................................................... 24
Paper Transportation............................................................................... 26
Xerographics I ......................................................................................... 28
Xerographics II ........................................................................................ 29
Development ........................................................................................... 31
IBT-I......................................................................................................... 33
IBT-II........................................................................................................ 34
Fusing-I ................................................................................................... 35
Contents
Paper) .................................................. 11
Fusing-II .................................................................................................. 37
Paper Exit................................................................................................ 39
Drives ...................................................................................................... 40
Electrical.................................................................................................. 42
OPERATION MODES .................................................................................. 44
CONTROLS ................................................................................................. 45
Paper Size Control .................................................................................. 45
Paper Tray Selection Control .................................................................. 46
OHP Side Detection Control ................................................................... 47
ROS Control ............................................................................................ 48
Scanner Motor Rotation ...................................................................... 48
Light Quantity Control.......................................................................... 48
Process Control....................................................................................... 49
Electric Potential Control ..................................................................... 49
Toner Density Control (PCDC)............................................................ 50
Toner Density Control (ADC) .............................................................. 51
ADC Solenoid Operation ..................................................................... 52
Process Sequence ............................................................................. 52
Xerographic Control ................................................................................ 53
BCR/Erase Lamp Control.................................................................... 53
Drum Cartridge Replacement.............................................................. 54
Drum Cartridge End of Life Detection ................................................. 55
Waste Toner Box Full Detection.......................................................... 55
Developer Control ................................................................................... 56
Home Position Detection..................................................................... 56
Toner Cartridge Detection Position ..................................................... 57
Toner Cartridge: Old/New Detection ................................................... 57
Development Position ......................................................................... 57
Development Control: Detection Methods........................................... 58
IBT Control .............................................................................................. 60
First Transfer (Drum Belt)................................................................ 60
Second Transfer (Belt Paper)........................................................ 61
Discharging ......................................................................................... 64
Belt Cleaning ....................................................................................... 64
1-UP/2-UP Control .................................................................................. 67
Revision B