27
Chapter 2 3 CCD Section
2
S2-Y1540
1. Description
2. Operation
This section reads the barcode and REG mark by
CCD.
On the JOB using REG mark or barcode, PPS2 works
to assure the correct CCD reading by temporarily
stopping the paper run at the place of PPS2 and slows
it. The paper conveyance speed will be accelerated
after the CCD reading.
1. PPS2
<Operation>
•
PPS detects the presence or non-presence of paper
by the “light-through” or the “light-bloced” state of the
PPS photo-receiving sensor by means of
receiving
from the PPS photo-emitting sensor.
• In the operation without REG mark or barcode,
PPS2 detects the timing of passing paper.
<Circuit diagram>
3. Operation of Each Part
5V
1
2
3
5V
5V
10
8
9
1
3
1
2
CN4-6
7
1
2
3
PPS2
Red
Main PCB unit
Orange
Receiving
Emitting
Light not transmitted: 5V
Light transmitted: 0V
Red
Orange
Red Red
Gray
Blue Blue
Gray
-0
3 CCD Section
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