Flat Bed Original Set Confirming System - Riso GR 3770 Technical Manual

FLAT BED IMAGE SCANNING SECTION
THEORY OF OPERATION

4. FLAT BED ORIGINAL SET CONFIRMING SYSTEM

The flat bed original detection sensor serves to confirm that an original has been set on the stage glass.
Open the stage cover.
(Stage cover sensor is turned OFF.)
Image scanner moves to the original detecting
position.
Set an original and close the stage cover.
(Stage cover sensor turned ON.)
Flat bed original detection sensor confirms that an original is held.
Image scanner returns to the home position.
Stage cover
Image scanner home
position sensor
Stage cover sensor
GR3770
Flat bed original detection sensor
Original detecting position is 120mm away
from the home position in scanning direction.
Optical axis of the stage cover sensor is cut off.
When an original has been set,
panel display changes into "Master making"
and the thermal head is lowered.
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