Image Processing; Overview - Ricoh B022 Service Manual

2.2 IMAGE PROCESSING

2.2.1 OVERVIEW

D r u m
L D D
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 SIMAC 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
Controller
(VCU)
L D
Driver
F C I
2-5
IMAGE PROCESSING
Fax (FCU Board)
IPU-A
Printer/Scanner
IPU-B
Video
Controller
IPU
Controller
S I M A C
H D D
B027D504.WMF
B022/B027