Boards
D014/D015/D078/D079 6-8 SM
IPU (Image Processing Unit)
The IPU does the following:
Controls the scanner
Processes the image signals from the SBU and sends them over the PCI bus to the
controller memory
Receives the image processing signals sent over the PCI bus from the controller
memory, processes them, then outputs them to the VGAVD.
Outputs the control signals for the ARDF
Controls the relay of power and signals
Image processing, ADS correction, and line width correction are done on the VBCU board
for all the digital data sent from the SBU. Finally, the processed data is sent to the printer as
digital signals (2 bits/pixel).