Multiple-feed prevention mechanism
The device uses a paper-separation roller method in Tray 2 and Tray 3 to prevent multiple sheets from
entering the device. The paper separation roller follows the rotation of the pickup roller because the
separation roller does not have its own driving force.
Under typical conditions, the separation roller is driven by the pickup roller through a sheet of paper.
The separation roller rotates in the paper-feed direction.
When sheets of paper exist between the pickup roller and the separation roller, the pickup roller does
not rotate the separation roller. A weak braking force is always applied to the separation roller so that
the separation roller rotation is inhibited, and the weak rotational force of the pickup roller is not enough
to rotate the separation roller. The multiple-feed paper cannot be fed to the printer.
Figure 4-24 Multiple feed prevention mechanism
ENWW Print engine 127
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