Video interface control
The video interface allows the formatter and DC controller to communicate. The formatter always
monitors the device status by using the video interface. The formatter sends VIDEO signals to the laser
driver via the video interface when the device is ready to function. The DC controller turns the laser
driver on or off, depending on those signals.
Figure 4-9 Video interface control signal flow
Laser/scanner system
The formatter sends video signals to the DC controller, which controls the laser/scanner. When the laser/
scanner system receives those signals, it converts them to latent images on the photosensitive drum.
ENWW Print engine 113
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