Duplo DUPRINTER DP-430 - End Mark Sensor

48
x Platemaking / Master Feed / Ejection Section
chap.2
End mark sensor PCB unit
CN4-4CN1-1
-3
-4
-7
-6
5V
5V
5V
VR1
0
5V
Blue
Red
Light green
Blue
Red
Light green
-2
-5
OrangeOrange
4
Main PCB unit
Reflection light amount
The larger the reflection light amount is, the
smaller the output voltage is. The smaller the light
amount is, the larger the output voltage is.
The value is checked with the HELP 07.
* Adjustment of end mark PCB unit
Adjust the HELP mode H-07 so the difference
between the maximum value of the black level and
the white level becomes 20 or more.
HELP mode H-07 \ see p.228
Description
The end marks are located at a fixed distance
relative to the master; as the master is being fed,
the end mark sensor senses master condition and
the end marks by means of intensity of reflected
light.
(2) End Mark Sensor
End mark
End mark sensor
Circuit
23S0219
440W08e
2Value of the HELP mode H-07
Black level maximum
White level 5 Black level maximum - 20 or more