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4-7
FS-1900
(2) Exposure
The charged surface of the drum
A
is exposed to the laser beam scanning from the laser scanner
unit
B
.
Figure 4-1-5 Exposure
The polygon motor
C
(with polygon mirrors) revolves (27,165 rpm) to reflect the laser beam over
the drum
A
. Lenses
D
and diversion mirror
E
are housed in the laser scanner unit
B
. These
lenses adjust the diameter of the laser beam (670 nm wavelength) so that the laser beam effectively
focalizes on the drum
A
surface.
A
B
Laser beam
output
C
D
D
E
Содержание Mita FS-1900
Страница 1: ...SERVICE MANUAL Published in Dec 01 Revision 1 1 Laser printer...
Страница 9: ...Chapter 1 P r o d u c t I n f o r m a t i o n...
Страница 27: ...Chapter 2 Installation Operation...
Страница 53: ...Chapter 3 Maintenance Adjustments...
Страница 76: ...Chapter 4 O p e r a t i o n O v e r v i e w...
Страница 114: ...Chapter 5 D i s a s s e m b l y...
Страница 144: ...FS 1900 5 31 8 Remove two screws 9 9 Split the fuser unit 0 Figure 5 2 28 Splitting the fuser unit 9 0 9...
Страница 151: ...Chapter 6 T r o u b l e s h o o t i n g...
Страница 198: ...Appendix A D i a g r a m s...
Страница 208: ...Appendix B S t a t u s P a g e...
Страница 215: ...Appendix C I n t e r f a c e...