Image Processing - Ricoh B205 Service Manual

6.5 IMAGE PROCESSING

6.5.1 OVERVIEW
Drum
LDD
The CCD generates an analog video signal. The SBU (Sensor Board Unit)
converts the analog signal to an 8-bit digital signal, then it sends the digital signal
to the IPU (Image Processing Unit) board.
The IPU board performs the image processing, such as auto shading, filtering,
magnification, gradation processing.
The ASIC on the controller board performs the image editing, such as image
repeat, double copy.
Finally, the IPU board sends the video data to the LD drive board.
SM
SBU
LD
LD
Controller
Driver
FCI
6-19
IMAGE PROCESSING
Copy Data Security
IPU-A
Fax (FCU Board)
Controller
IPU-B
Printer/Scanner
Video
Controller
IPU
B205/B209/D007/D008
Board
ASIC
HDD