Ricoh BR-C1a Basic Service Training page 28

LD Unit Components (VCSEL Technology)
 A VCSEL LD unit has 40 beams in a two-dimensional array.
 VCSEL allows magnification correction and fine adjustment of
image position.
 VCSEL also keeps the strength of the laser beams constant by
optical waveform correction. This correction is important for
reproducing thin diagonal lines.
 This technology was used in the Taurus-C1.
Slide 28
1. VCSEL Array
2. Photosensor (feedback detection)
3. Aperture
4. Mirror
5. Aperture
6. Lens (TCL)
7. Collimating Lens
8. 1/4 Wavelength Board
"VCSEL" means Vertical Cavity Surface Emitting Laser.
It operates at 1200 x 4800 dpi.
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BR-C1 Training