photosensitive drum. The modulated laser beams generate the latent electrostatic image on the
photosensitive drum according to the image data signals that are received from the DC controller
PCA.
Laser/scanner control
The laser/scanner-control circuit on the laser driver PCA turns the laser diodes on and off according
to image-data signals that the DC controller PCA sends. The DC controller PCA sends image-data
signals VD01/VD01, VD02, and /VD02 and the laser-control signals CNT0, CNT1, and CNT2 to the
logic circuit on the laser driver PCA. The laser-control signals control laser emission, automatic
power control (APC), horizontal-synchronization control, and image-mask control.
Figure 4-9 Laser-
control-circuit block diagram on page 130 illustrates the laser-control system.
ENWW Laser/scanner system 129
manuals4you.commanuals4you.com
To Next Page
Loading...