LASER UNIT
August, 2006
6-46
Optical Path
All four latent images (C, M, Y, K) are written at approximately the same time. The
laser diode turn-on times for each color are timed with drum rotation and paper
feed. Refer to the illustration on the previous page. The optical path for each color
is as follows:
Cylindrical lens (laser beam correction in each LD unit)
(Not shown)
↓
Polygon mirror (main scanning line)
4
↓
F
θ
lens (dot position correction)
3
↓
1st Mirror
↓
WTL lens (surface distortion correction)
2
↓
2nd Mirror
↓
3rd Mirror
↓
Dust-shield Glass
10
↓
Drum
Each f
θ
lens has two layers. Because of this, it can correct both beams from the LD
units. Each WTL lens corrects for image distortion.
The polygon mirror turns at high speed. The laser beams are reflected from the
polygon mirror to a pair of mirrors (upper and lower), then to one more mirror and
out to the drum through the dust-shield glass. The polygon mirror has six faces.
The polygon motor rotates at 33,307 rpm for full-color and for black-and-white
copying.
Important: Because of its high rotation speed, the mirror continues to turn for
about 3 minutes after the machine is turned off. Allow enough time for the mirror to
stop before you start to remove the polygon motor.
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 ...
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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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