1.Detailed Descriptions
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Positioning roller ascent/descent mechanism
The positioning roller unit is made to ascend/descend by a positioning roller motor (the motor operates
CW/CCW), and its position is detected by the positioning roller HP sensor. The positioning roller rotates
in the opposite direction to the transport roller, and has the function of transporting paper to the back of
the staple tray.
Paper rear edge alignment mechanism
The rear edge of paper transported by the positioning roller is made to project against a rear trailing
edge fence by a reverse roller. It rotates continuously until the bundle of paper is ejected after it is
stapled.
The reverse roller is driven from a transport roller via a gear, and is always situated above the stapler
tray. A driven roller is installed on the side of the stapler tray which reduces wear of the reverse roller.
Paper detection on stapler tray
The stapler tray is provided with the following sensors which detect paper status in the tray.
• Paper jam in tray: tray jam sensor
• Paper present/absent in tray: paper sensor
Jogger mechanism (paper alignment)
Paper transported to the stapler tray is aligned one sheet at a time by a jogger fence. The jogger fences
are driven forwards and backwards independently, and align the paper with the tray center. Jogger
fence drives are installed at the front and back. The jogger fence HP sensors are also installed at the
front and back.
The paper alignment is performed as follows:
• If Corner Stapling on Paper Other than B5 SEF or Larger Paper
The jogger fences move from the home position, and stand by 7-12 mm away from the paper to be
stapled. When the paper is then transported to the tray, the jogger fence (rear) moves according to
the paper size and aligns the paper.
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