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5-40 Functional Information
Multi-Feed Prevention Mechanism
When feeding paper from Tray 2, the printer uses the Separation
Roller to prevent multi-feeding. Normally, the Separation Roller is
imparted with a rotational force in the same direction as the Feed
Roller. However, since the Separation Roller is equipped with a
Torque Limiter, it rotates with Feed Roller 1 by transmission of its
rotational force via the transported paper. On the other hand, if
multiple sheets of paper are picked up, the low friction force between
the sheets of paper results in a weak rotational force being
transmitted to the Separation Roller from Feed Roller 1.
Consequently, the Separation Roller’s own rotational force separates
the extra sheet.
Figure 5-25 Multi-Feed Prevention Mechanism