RISO Inc. Technical Communications
us.riso.com
CHAPTER 11: FB ORIGINAL SCANNING SECTION (600 dpi)
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2.5mm
2.5mm
10mm
6.5mm
3.5mm
15mm
32mm
8mm
3. Stage-Glass Original Detection Mechanism
The FB original detection sensor checks whether an original has been placed on the stage glass. As soon as
the stage cover is closed halfway, blocking the light path to the stage-cover sensor, the FB original detection
sensor checks whether there is an original on the stage glass. If the flatbed original detection sensor is
receiving light (original present), the indication on the operation panel changes to “Master Making” and the
shading-compensation and auto-base-control adjustment are performed. The lamp carriage is then moved
to the scanning standby position with the scanner lamp turned on. If the Start key is pressed within 60
seconds, the scanning operation starts.
If the Start key is not pressed within 60 seconds, the scanner lamp turns off and the lamp carriage returns
back to the home position.
4. FB Auto-Base-Control
When an original is set and the stage cover is closed, or when the original scanning density is set to “AUTO”
and if the operation starts from the lamp carriage at home position, the auto-base-control, which is explained
below, is conducted after the shading-compensation is performed.
With an original set on the scanner table and when the stage-cover sensor detects the stage cover closed, or
when the Start key is pressed, the scanner lamp illuminates and the FB read pulse motor rotates in the
scanning direction. At a distance of 47mm after the lamp carriage escapes from the FB/AF HP sensor, the
lamp carriage stops for a very short period and moves another 3.5mm in which the shading-compensation is
made. After the shading-compensation is performed, the lamp moves 16.5mm in the scanning direction
(10mm from the leading edge of the original) and the CCD reads the color density of the original background.
The original background is read two more times after moving the lamp 2.5mm in distance the each time.
Therefore, the auto-base-control scanning is made 3 times in total.
The FB read pulse motor then rotates in the reverse direction to bring the lamp carriage back to the standby
position and starts the original scanning.
1106
Shading compensating area
Auto-base-control
Home position
FB/AF HP sensor
Standby position
Gain adjustment
Содержание RZ2xx Series
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