●
Connection of signals 1-31
The IJ printer input circuit serves as a current-steered load for the print
target detector output circuit so that the printing start signal is entered
when the print target detector output transistor (Tr) turns ON. Ensure that
the employed output transistor (Tr) complies with the following
specifications.
Withstanding voltage : 12 VDC or more
Maximum drive current : 12 mA or more (IL
≒
10mA)
Residual voltage : 2 V or less
Leak current : 0.1 mA or less
Power supply specifications
Supply voltage : DC12V
Current consumption : 80 mA or less
(iii) Setup procedure
Turn ON switch SW2-5 on the EZJ95 board (terminal).
(Switch 2 is inside the cover. Do not operate it unless you have finished the
service education.)
1.5.3-4 Print target detector
(a) When a dedicated power supply is not used
If the print target detector current consumption is not more than 80 mA, no
dedicated power supply is required because adequate power can be supplied from
the IJ printer built-in power supply. In such a situation, make wiring connections
and perform setup as indicated below.
(i) Print target detector wiring method
Use a print target detector whose output is of a noncontact (transistor) type.
The best suited detector would be an amplifier-incorporated photoelectric
sensor that uses an optical beam for print target detection.
Print target detector
When a transmission type is employed,both
the light emitter and receptor must be
connected in the same manner.
TB1
Signal
GND
(ii) Print target detector specifications
Output circuit
a
SW2-5
Tr
GND
+12V
Signal
GND
Print target detector
IJ printer
ON
OFF
(Switch is black.)
1
2
3
+12V
Signal
GND
+12V
+12V
b
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Summary of Contents for PH
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