2.1.1.2 Drum Charge
The PC drum is charged with static electricity before laser exposure. The rotating charge brush and pre-film
are used as the charging method. Less ozone is generated by the corona charge of the rotating charge brush
and the pre-film, and the PC drum can be charged with low voltage because the charge is directly applied to
the PC drum. The charge brush is rotated by the drive of the M1 main motor via its gear.
Drum Cartridge
Rotating Charge
Brush
PC Drum
Protecting
Shutter
PC Drum
Charge d Su rface:
(approx. -800 V)
PC Drum
Protecting
Shutter
Drum Ch arging
and Pre-film Bias
PWB-F
C180 MAIN
A
B
Pre-film
A: Drum Charging Bias
B: Drum Ground
IC201
Figure 2-4. Drum Charge
Operating Principles
EPL-5500W Service Manual
2-4
Rev. A
Summary of Contents for EPL-5500W
Page 1: ...EPSON TERMINAL PRINTER EPL 5500W SERVICE MANUAL EPSON 4005668 ...
Page 2: ... ii ...
Page 9: ...REVISION SHEET Revision Issue Date Revision Page Rev A November 24 1995 1st issue vii ...
Page 13: ...Rev A 1 iii ...
Page 31: ...List of Tables Table 2 1 Functions of C180 MAIN Board Main Elements 2 18 ...
Page 71: ...4 ii Rev A ...
Page 85: ...6 ii Rev A ...
Page 89: ...Maintenance EPL 5500W Service Manual 6 4 Rev A ...
Page 96: ...Appendix EPL 5500W Service Manual A 6 Rev A ...
Page 98: ...Appendix EPL 5500W Service Manual A 8 Rev A ...
Page 103: ...Figure A 7 C180 MAIN Component Layout Side B EPL 5500W Service Manual Appendix Rev A A 13 ...
Page 105: ...EPSON Printed in Japan 95 11 01 S ...