Ricoh D109, Обучение по обслуживанию

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S-C4L Training
30
Slide 30
Image Processing - Overview
The scanned image is processed by the following modules.
ˆ
In the SBU
¾
CCD: Converts the reflected light from the image into an analog signal.
Driven by the CALDA.
¾
Amp: Amplifies the analog signal and sends it to the AFE on the BICU.
ˆ
In the BICU
¾
IPU: Auto shading, filtering, magnification, scanner gamma correction, ID
gamma correction
¾
VCU: Printer gamma correction, LD print timing control and laser power
PWM control
¾
FCI (inside the VCU): Smoothing
¾
The data then moves to the LD drive board in accordance with timing
controlled by the BICU.
¾
CALDA: CCD drive, AFE drive, Data conversion, Offset correction
¾
AFE: Analog digital converter, Gain adjustment, Offset adjustment (Analog
Front End)