EPSON AcuLaser C2000 / AcuLaser C1000
Revision E
Operating Principles
Printing Process
91
Pre-Transfer Erase
Pre-transfer erase eliminates the electricity where no toner is on.
24 eraser lamp (LED) is located in one line on the AIDC/Eraser Board. They
lights the surface of the OPC drum after development.
Figure 2-23. Pre-Transfer Erase
Humidity Sensor
Humidity sensor (HS1) rear bottom of the mechanism measures the humidity
and temperature of the outside of the mechanism. CPU reads this data and
determine the transfer bias.
Figure 2-24. Humidity Sensor
AIDC (Automatic Image Density Control)
AIDC detects AIDC mark density made on the OPC drum by AIDC sensor that
is located at the same position with eraser lamp and determines the
appropriate development bias at printing.
AIDC density detection is performed by a set of LED and 2 photo sensors.
AIDC detection is made for respective toner cartridge when powering the
switch on or during the pre-rotation when opening or closing the front top
right cover.
Transfer Belt Unit
Eraser Lamp
OPC Drum
Humidity
Sensor (HS1)
Summary of Contents for ACULASER COLOR 1000
Page 1: ...EPSON ACULASERCOLOR2000 ACULASERCOLOR1000 A4 Color Laser Printer SEPG00004 SERVICE MANUAL ...
Page 12: ...C H A P T E R 1 PRODUCTDESCRIPTIONS ...
Page 68: ...C H A P T E R 2 OPERATINGPRINCIPLES ...
Page 104: ...C H A P T E R 3 TROUBLESHOOTING ...
Page 138: ...C H A P T E R 4 DISASSEMBLYANDASSEMBLY ...
Page 182: ...C H A P T E R 5 ADJUSTMENT ...
Page 187: ...C H A P T E R 6 MAINTENANCE ...
Page 189: ...C H A P T E R 7 APPENDIX ...
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