Paper Feed, Transport, Paper Exit 
SM 6-61 J012/J013/J014 
Detailed 
Description 
6.8.3  LEADING EDGE AND PAPER SIZE DETECTION 
 
 
There is no paper size sensor in the standard paper cassette or in the optional 500-Sheet 
Paper Tray. The paper size can be set on the printer operation panel. The paper size can 
also be selected with the software application or the printer driver.   
 
  The paper size (and other settings) in the software application always have priority 
over the printer driver settings. 
The 1st registration sensor [1] is mounted on the carriage unit [2] and moves from side to 
side with the carriage during printing. 
  The 1st registration sensor detects the leading edge of the sheet [3] for feed timing. 
  The 1st registration sensor also detects the width of the paper when it passes over and 
detects the left vertical edge of the paper. This ensures that the paper below is wide 
enough for the maximum printing area specified by the paper size selection for the print 
job.