Sbu (Sensor Board Unit) - Ricoh D009 Service Manual

Image Processing
Monochrome Scanner Model
SBU: The SBU (Sensor Board Unit) converts the analog signal from the CCD to an 8-bit
digital signal and sends it to the SIB.
SCNB: The SCNB (Scanner Connector Board) relays image signals and controls the
scanner.
BICU: The BICU (Base Engine Image Control Unit) performs timing control and command
control. The IPU on the BICU processes auto shading, filtering, magnification, γ correction,
and gradation. The memory controller performs image compression, decompression, and
memory address control (for binary picture processing mode only)
LD Unit: Performs dual channel multi-beam exposure, multiple exposure, and synchronous
detection.
Controller: Performs dual channel multi-beam exposure, multiple exposure, and
synchronous detection.

6.5.2 SBU (SENSOR BOARD UNIT)

SBU of MS (Monochrome Scanner) Model
The CCD converts the light reflected from the original into an analog signal. The CCD line
has 7200 pixels at a resolution of 600 dpi.
D009/D011/D012/D013 6-16 SM