Ricoh LDD250, Service Manual

Page: 335 / 459

SCANNER AND OPTICS
SM 6-13 C262/C265
Detailed
Des
cription
s
6.2 SCANNER AND OPTICS
6.2.1 OVERVIEW
The original is illuminated by the exposure lamp (a xenon lamp in this model) [A].
The image is reflected onto a CCD (charge coupled device) [C] via the 1st, 2nd,
3rd mirrors, and lens [B].
The 1st scanner [D] consists of the exposure lamp, and the 1st mirror [E].
A lamp stabilizer energizes the exposure lamp. The light reflected by the reflector is
of almost equal intensity, to reduce shadows on pasted originals.
6.2.2 SCANNER DRIVE
A stepper motor drives the scanner. The 1st and 2nd scanners [A, B] are driven by
the scanner drive motor [C] through the timing belt [D], scanner drive pulley [E],
scanner drive shaft [F], and two scanner wires [G].
C262D001.WMF
C262D002.WMF
[A] [B] [C]
[D]
[E]
[A]
[B]
[C]
[D]
[E]
[F]
[G]
[H]