Ricoh J001 Service Manual page 161

6.7.3 LEADING EDGE AND PAPER SIZE DETECTION
[B]
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.
SM
CÓPIA NÃO CONTROLADA
PAPER FEED, TRANSPORT, OUTPUT
[A]
6-29
CÓPIA NÃO CONTROLADA
G707D936.BMP
J001/J003