PAPER FEED, TRANSPORT, OUTPUT 
SM 6-29 J001/J003 
Detailed 
Descriptions 
 
6.7.3  LEADING EDGE AND PAPER SIZE DETECTION 
 
 
There are no paper size sensors in the standard paper cassette or the optional 
500-Sheet Paper Tray for the J003. The paper size must be selected with the 
software application or the printer driver.  
Important: The paper size (and other settings) in the software application always 
has priority over the printer driver settings.  
The registration sensor [A], mounted on the carriage unit, moves from side to side 
with the carriage during printing. 
The registration sensor detects the leading edge of the sheet [B] for feed timing. 
The registration sensor also detects the width of the paper when it passes over the 
left vertical edge of the paper. This ensures that the paper is wide enough for the 
printing area specified by the paper size selection for the print job. 
 
 
 
G707D936.BMP 
[A]
[B]