Print Heads 
SM 6-33 J012/J013/J014 
Detailed 
Description 
6.4.7 REGISTRATION SENSORS 
 
 
1  1st Registration Sensor 
2 Transport Belt 
3  Paper (Leading Edge) 
4  2nd Registration Sensor 
 
1st Registration Sensor 
The 1st registration sensor is attached to the left side of the carriage and moves side to side 
with the carriage during printing.   
The 1st registration sensor performs two important functions for print control: 
  Detects the leading edge of every sheet 
  Detects the width of the paper when the carriage and sensor pass horizontally over the 
vertical edge of the paper as it feeds. 
 
  This is not automatic paper size detection. The paper size must be set with the 
printer driver. 
  The printer will signal an alert if the detected size does not match the size selected 
for the print job.