Ricoh VT3500, Руководство по обслуживанию

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9.3.7 Make-up Processing
[Overall Operation]
The command sheet is scanned twice as fast as the original. The image data
for the command sheet are digitized and converted to single-bit white or black
data. They also go through normal image processing in the line mode. The
image data for a command sheet are reduced to 1/80 and stored in the
corresponding area memory (Memory 1 to 4).
The command sheets data are picked out of memory through the area
selector when image data of an original are sent to the selection circuit.
When the areas designated by two or more command sheets overlap, the
data from the last command sheet are picked out from the corresponding
memory by the area selector.
The image data of the original and command sheet data are combined and
edited in the selection circuit. When a pattern mode is selected, the pattern
generator sends the selected background pattern(s) to the selection circuit.
The image data of the original, the command sheet data, and the pattern data
are combined and edited in the selection circuit as ordered.
CN402
CN403
CCD
A/D
Conversion
PCB
6-bit
6-bit
1-bit
MTF
Correction
[Line Mode]
Magnification
&
Image Shift
Processing
Processing
Binary
Generator
Pattern
Make-up
Circuit
Area
Selector
Memory 1
Memory 2
Memory 3
Memory 4
Area 1
Area 2
Area 3
Area 4
Out of Area
Selection
Circuit
Head
Drive PCB
Command
6-bit
Command
Thermal
Image Processing PCB
1 December 1993
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