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EPSON AcuLaser C1900/AcuLaser C900
Revision B
Operating Principles
Description of Mechanisms
100
2.4.3 Exposure Process
The laser beam from the print head creates an electrostatic latent image on the OPC drum
surface.
SUB SCANNING DIRECTION (VERTICAL SCANNING DIRECTION)
When the printer receives the PRINT signal, the polygon motor (M3) and the main motor
(M1) operate, and paper feeding is started.
Printing in the sub scanning direction is started when the belt location detection sensor is
turned on.
MAIN SCANNING DIRECTION (HORIZONTAL SCANNING DIRECTION)
Upon receiving the SOS sensor signal from the Laser Control Board, the printer starts
printing in the main scanning direction.
PRINTABLE AREA
Figure 2-10
at right shows the printable area in the sub scanning direction and the main
scanning direction.
Figure 2-9. Exposure Control
Figure 2-10. Printable Area
Polygon Motor (M3)
OPC Drum
/HSYNC
/VIDEO
/VIDEO /TOD
Loss width:4 mm
Loss width:4 mm
MAIN SCANNING DIRECTION:208 mm
SU
B SCAN
NING DIRECTION:345
mm
80 ms
Summary of Contents for AcuLaser C1900
Page 1: ...EPSON AcuLaserC1900 AcuLaserC900 A4 Color Page Printer SERVICE MANUAL ROSCO SEPG02003 ...
Page 21: ...C H A P T E R 1 PRODUCTDESCRIPTION ...
Page 87: ...C H A P T E R 2 OPERATINGPRINCIPLES ...
Page 122: ...C H A P T E R 3 TROUBLESHOOTING ...
Page 166: ...C H A P T E R 4 DISASSEMBLYANDASSEMBLY ...
Page 208: ...C H A P T E R 5 ADJUSTMENT ...
Page 217: ...C H A P T E R 6 MAINTENANCE ...
Page 219: ...C H A P T E R 7 APPENDIX ...
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