Flat Bed Image Scanning System - Riso GR 3770 Technical Manual

FLAT BED IMAGE SCANNING SECTION
THEORY OF OPERATION

6. FLAT BED IMAGE SCANNING SYSTEM

The original reading area, in general, depends on size of sheet set on the Paper feed tray. When Bound Original
mode is ON, realtime trimming is performed.
<START> key ON
Image sensor LED is lit and shading
correction is performed.
Flat bed read pulse motor gets ON and the image scanner
starts to move in scanning direction.
Skipping to read approximately 5mm of the original top part,
reading/writing starts.
On completion of reading/writing for size well corresponding
to the printing sheet, the image scanner LED is put OFF and
the flat bed read pulse motor is turned OFF.
Image scanner moves to STOP position
Image scanner home position sensor
GR3770
When original scanning density is in "AUTO", FB auto scanning contrast Adjustment
is first performed.
Flat bed read pulse motor
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