Xerox VersaLink B7025 Service Manual page 1271

Platen Scanning Operation
The scan process begins once size sensing is complete. First, the full rate carriage moves to
the white reference strip position. Here, with the exposure lamp off, it collects and applies black
change correction data.
Next, the exposure lamp turns on and the IIT collects and applies white change correction
data.
The full rate carriage now moves to the start position, where it waits a specified time. When the
wait time elapses, the full rate carriage moves across the image area.
The exposure lamp turns off at the end of the scan, and the full rate carriage returns to the
white reference strip position. Refer to Figure
Figure 11 Platen scanning operation
Launch Issue
Xerox® VersaLink® B7025/B7030/B7035 Multifunction Printer
11.
End of Platen Scanning Operations
At the end of the scan, with the full rate carriage at the white reference strip position, the IIT
determines how much time has elapsed since the last shading correction was performed.
If the elapsed time is greater than a specified value, the IIT performs auto gain control and auto
offset control, and collects shading correction data and white change correction data.
It then moves the full rate carriage to the document sensing position, where it waits for the next
customer job. Refer to Figure 12.
Figure 12 End of platen scanning
April 2017
8-25
Product Technical Overview