COPY PROCESS OVERVIEW
August, 2006
6-12
4. DRUM POTENTIAL SENSOR
The drum potential sensor in each PCU detects the drum potential. Changes in
conditions near the drum (heat, humidity, drum condition) change the drum
potential. The machine uses the output from this sensor to adjust the voltages
that are used during auto process control.
5. DEVELOPMENT
The magnetic developer brush of the development roller contacts the latent
image on the drum surface. Toner particles are electrostatically attracted to the
areas of the drum surface where the laser reduced the negative charge on the
drum.
6. IMAGE
TRANSFER
The developed toner images are transferred from the drums to the ITB. Rollers
inside the ITB apply a high positive charge to the reverse side of the ITB. This
positive charge pulls the toner particles from the drum to the ITB.
7. QUENCHING
The light from the quenching lamp electrically neutralizes the charge on the
drum surface. After cleaning and quenching, the drum surface is ready for the
next cycle.
8. DRUM CLEANING
First, a soft cleaning brush roller removes toner from the drum. Next, a
lubrication roller, with a lubricant bar behind it, cleans the drum. Finally, an
opposing cleaning blade removes remaining toner.
9. ID SENSORS, MUSIC SENSORS
Two ID sensors and three MUSIC sensors are in a straight line across the ITB.
At fixed intervals, the laser in each PCU writes an ID sensor pattern on each
drum surface (Y, M, C, K). These patterns are transferred to the ITB. The two
ID sensors above the ITB (one for black and one for Y, M, C) measure the light
reflected from each of the four patterns and output this data (Vsp) to the CPU.
This Vsp is used for toner supply control. The MUSIC sensors read a different
set of patterns to make adjustments to the laser main scan start timing, angle of
the 3rd mirror, and the drum drive speeds. The MUSIC sensors ensure that the
alignment of the images on the ITB is correct.
10. PAPER TRANSFER AND SEPARATION
A strong negative charge applied to the PTR idle roller repulses the image from
the ITB onto the paper. A paper discharge plate neutralizes the charge on the
paper and ITB. Then the curvature of the feed path allows the paper to
separate from the ITB.
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 ...
Страница 873: ......
Страница 878: ...LCT LARGE CAPACITY TRAY Machine Code B473 06 09 ...
Страница 880: ......
Страница 896: ...PAPER END DETECTION September 2006 B473 16 06 09 ...
Страница 897: ...Peripherals 2000 3000 SHEET FINISHER Machine Code B700 B701 ...
Страница 901: ......
Страница 972: ...COVER INTERPOSER TRAY Machine Code B704 06 09 ...
Страница 988: ...3000 SHEET FINISHER Machine Code B706 06 09 ...
Страница 991: ......
Страница 1048: ...9 BIN MAILBOX Machine Code B762 06 09 ...
Страница 1050: ......
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 ...
Страница 1103: ......
Страница 1104: ......
Страница 1105: ......
Страница 1106: ......
Страница 1119: ......
Страница 1120: ......