Toshiba B-850 User Manual

Page of 116
 6. TROUBLESHOOTING 
EO1-33029 
6.4 Threshold Setting 
6- 4 
6.4 Threshold Setting 
 
 
To maintain a constant print position the printer uses the Transmissive 
Sensor to detect the gap between labels by measuring the amount of 
light passing through the media.  When the media is pre-printed, the 
darker (or more dense) inks can interfere with this process causing 
paper jam errors.  To get around this problem a minimum threshold can 
be set for the sensor in the following way.  
 
„Threshold setting procedure 
 
1.
  Turn the power ON.  The printer is in stand by mode. 
 
 
 
2.
  Load a media roll. 
3.
 Press the 
[PAUSE]
 key. 
 
 
 
4.
  The printer enters the pause mode. 
5.
  Press and hold the 
[PAUSE]
 key for at least 3 seconds in the pause 
state. 
 
 
 
6. 
The sensor type is displayed
.
 
 
7.
  To select the Reflective Sensor (Black Mark Sensor), press the  
 [FEED]
 key. 
 
 
 
8.
 
To select the Transmissive Sensor (Feed Gap Sensor), press the 
[FEED]
 key again.  
 
 
 
9.
 
Press and hold the 
[PAUSE]
 key until more than 1.5 labels (tags) 
have been advanced.   
 
The media is advanced until the 
[PAUSE]
 key is released. 
 
(Threshold setting is completed by this operation.) 
 
 
 
10.
 Press the 
[RESTART] 
key. 
 
 
 
11.
  The printer is in stand-by. 
 
12.
  Send an issue command from the PC to the printer.  
 
 
 
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NOTES: 
1. If the 
[PAUSE]
 key is 
released within 3 seconds 
while  in pause state, paper 
will not feed. 
2.  Failure to feed more than 
1.5 labels may result in an 
incorrect threshold setting. 
3.  While the Print Head Block 
is raised, the 
[PAUSE] 
key 
does not work. 
4.  Errors such as paper end 
and cutter error are not 
detected during paper feed. 
5.  Selecting the Transmissive 
Sensor(for pre-printed 
labels) within software 
commands allows the 
printer to detect the proper 
print start position 
correctly even when using 
pre-printed labels. 
6.  If using the transmissive 
sensor and the printer 
continues to print out of 
position even after setting 
the threshold, adjust the 
Feed Gap Sensor in the 
system mode.  Reset the 
threshold again.  Make sure 
that the Transmissive 
Sensor (for pre-printed 
labels) is selected in the 
feed and issue commands.  
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