PROCESS CONTROL
August 2006
6-76
6.11.2 COMPONENTS USED DURING PROCESS CONTROL
Potential Sensor
There is a potential sensor in each PCU above the surface of the drum.
Each potential sensor consists of a probe and small power pack. A drawer
connector connects the probe and the power pack as shown above.
The potential sensor measures the potential of the drum immediately after it is
charged by the charge roller. It also measures a series of patterns (undeveloped
latent images) exposed on the drum by the laser diodes:
•
A detector in the center of a very small window measures the strength of the
electrostatic charge on the drum surface. The strengths of the charges vary,
depending on the surface potential of the drum.
•
A feedback circuit applies voltage to the probe until the strength of this charge
equals (offsets) the strength of the charge on the drum.
B132D901.WMF
Copier PCU
Potential
Sensor Probe
Drum Surface Potential
-900V (Max.)
Transfer Roller
1.5 kV (Normal Use)
5 kV (Transfer)
Development Roller
Range: -350 to -800 V DC
def. = -500V
Potential Sensor PP
Max. Output: -1000V
Charge Roller
Drawer
Connector
Содержание e-STUDIO 4500c
Страница 48: ...August 2006 COPIER E STUDIO4500C 5500C 1 9 Installation A Under ARDF B Operation panel film B132I002 WMF A B ...
Страница 79: ...COPY TRAY B756 August 2006 1 40 1 4 2 INSTALLATION 1 Remove the left upper cover A x 2 B756I101 WMF A ...
Страница 329: ...BOARDS August 2006 3 142 3 14 9 AC DRIVE BOARD Remove left lower cover 3 2 3 A AC drive board x8 x6 B132R727 WMF A ...
Страница 342: ...August 2006 AIR FILTERS 3 155 3 17 3 SCANNER FILTER Remove A Top left cover x1 B Scanner filter B132R730 WMF A B ...
Страница 460: ...ADDITIONAL INFORMATIONS April 2007 4 82 5 Remove the bracket G 1 screw 6 Remove the harness cover H 1 screw G H ...
Страница 722: ...BOARDS August 2006 6 6 6 2 BOARDS 6 2 1 BLOCK DIAGRAM B132D981 WMF ...
Страница 871: ...A3 11 x17 PAPER SIZE TRAY Machine Code B331 06 09 ...
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Страница 878: ...LCT LARGE CAPACITY TRAY Machine Code B473 06 09 ...
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Страница 896: ...PAPER END DETECTION September 2006 B473 16 06 09 ...
Страница 897: ...Peripherals 2000 3000 SHEET FINISHER Machine Code B700 B701 ...
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Страница 972: ...COVER INTERPOSER TRAY Machine Code B704 06 09 ...
Страница 988: ...3000 SHEET FINISHER Machine Code B706 06 09 ...
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Страница 1048: ...9 BIN MAILBOX Machine Code B762 06 09 ...
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Страница 1062: ...PAPER MISFEED DETECTION TIMING September 2006 B762 12 06 09 ...
Страница 1096: ...e STUDIO4500c 5500c POINT TO POINT DIAGRAM 1 4 ...
Страница 1097: ...e STUDIO4500c 5500c POINT TO POINT DIAGRAM 2 4 ...
Страница 1098: ...e STUDIO4500c 5500c POINT TO POINT DIAGRAM 3 4 ...
Страница 1099: ...e STUDIO4500c 5500c POINT TO POINT DIAGRAM 4 4 ...
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