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Printer Service Manual
5057-XXX
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Charge
The Charge Roll places a uniform negative electrostatic charge on the surface of the drum. The drum surface is
made of a photoconductive material that holds an electrical charge as long as the drum remains in darkness.
Light striking the drum discharges the surface charge.
The charge roll is a conductive roll that is positioned slightly above the surface of the drum. The HVPS supplies
the charge roll with two voltages; a negative DC charge voltage and an AC discharge voltage that is used for
electrically cleaning the drum.
HVPS
(-VDC)
(-VDC)
Ground
Conductive Tube
Photoconductive
Surface
0V
-VDC value
DRUM
Drum Surface
Voltage
Drum Surface
Image
Ground
Charge roll
HVPS
(-VDC)
(-VDC)
Ground
Conductive Tube
Photoconductive
Surface
0V
-VDC value
DRUM
Drum Surface
Voltage
Drum Surface
Image
Ground
Charge roll
Summary of Contents for C935 Series
Page 16: ...xvi Printer Service Manual 5057 XXX Go Back Previous Next...
Page 21: ...Notices and safety information xxi 5057 XXX Go Back Previous Next...
Page 22: ...xxii Printer Service Manual 5057 XXX Go Back Previous Next...
Page 28: ...xxviii Printer Service Manual 5057 XXX Go Back Previous Next...
Page 61: ...General information 1 33 5057 XXX Go Back Previous Next TTM theory...
Page 70: ...1 42 Printer Service Manual 5057 XXX Go Back Previous Next 3TM theory...
Page 77: ...General information 1 49 5057 XXX Go Back Previous Next 1TM theory...
Page 84: ...1 56 Printer Service Manual 5057 XXX Go Back Previous Next Duplex...
Page 90: ...1 62 Printer Service Manual 5057 XXX Go Back Previous Next...
Page 91: ...General information 1 63 5057 XXX Go Back Previous Next...
Page 92: ...1 64 Printer Service Manual 5057 XXX Go Back Previous Next...
Page 268: ...2 176 Printer Service Manual 5057 XXX Go Back Previous Next...
Page 331: ...Repair information 4 33 5057 XXX Go Back Previous Next E F...
Page 440: ...4 142 Printer Service Manual 5057 XXX Go Back Previous Next...
Page 470: ...4 172 Printer Service Manual 5057 XXX Go Back Previous Next...
Page 530: ...4 232 Printer Service Manual 5057 XXX Go Back Previous Next...
Page 534: ...5 4 Printer Service Manual 5057 XXX Go Back Previous Next Printhead Polygon mirror motor...
Page 539: ...Connector locations 5 9 5057 XXX Go Back Previous Next...
Page 540: ...5 10 Printer Service Manual 5057 XXX Go Back Previous Next...
Page 548: ...6 4 Printer Service Manual 5057 XXX Go Back Previous Next...
Page 551: ...Parts catalog 7 3 5057 XXX Go Back Previous Next Assembly 2 Covers 2 2 1 11 8 7 9 5 6 4 3 10...
Page 585: ...Parts catalog 7 37 5057 XXX Go Back Previous Next Assembly 32 Electrical 4...
Page 593: ...Parts catalog 7 45 5057 XXX Go Back Previous Next Assembly 37 1TM drive and electrical...
Page 595: ...Parts catalog 7 47 5057 XXX Go Back Previous Next Assembly 38 3TM covers 3 5 2 4 1...
Page 603: ...Parts catalog 7 55 5057 XXX Go Back Previous Next Assembly 42 3TM drive and electrical...
Page 628: ...I 10 Printer Service Manual 5057 XXX Go Back Previous Next...
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