2JN
2-1-9
(3) Laser scanner unit
The charged surface of the drum is then scanned by the laser beam from the laser scanner unit.
The laser beam (780 nm wavelength) beam is dispersed as the polygon motor revolves to reflect the laser beam over the
drum. Various lenses and mirror are housed in the laser scanner unit, adjust the diameter of the laser beam, and focalize
it at the drum surface.
Figure 2-1-13 Laser scanner unit
1
2
3
4
5
7
6
(1)
Polygon motor (mirror)
(2)
F-
θ
lens
(3)
F-
θ
lens
(4)
LSU mirror
(5)
LSU shutter
(6)
LSU frame
(7)
LSU cover
Y111030-4 Service Manual
Summary of Contents for d-Copia 284MF
Page 1: ...d Copia 284MF Digital Copier SERVICE MANUAL Code Y111030 4...
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Page 246: ...2JN 2 3 12 2 3 4 DP driver PWB Refer to the DP s service manual Service Manual Y111030 4...
Page 251: ...UPDATING STATUS DATE UPDATED PAGES PAGES CODE 09 2009 1ST EDITION 251 Y111030 4...