Develop ineo+ 6500 Service Manual page 515

4. PUNCH SECTION
(1) 2 to 3 holes mode
In the 2 to 3 punched hole mode, the groove of the switching cam of the 3-hole punching blade is shaped so
that the rear side is concentric with the rotating axis and the front side is curved toward the rotating axis. For this
reason, when the switching cam is rotated clockwise, the punching blade is driven downward and when the
cam is rotated counterclockwise, the punching blade is not driven. The shape of the groove of the punching
blade for 2 holes is contrary to it on the right and left sides. When the switching cam is rotated counterclock-
wise, the punching blade is driven.
(2) 2 to 4 holes mode
In the 2 to 4 holes mode, the 2 punching blades at both ends are driven only when the switching cam is rotated
clockwise in the same way as in the 2 to 3 hole mode. As the 2 punching blades at the center should be driven
in both cases of 2 or 4 hole punching, shape of the groove of the switching cam is symmetrical on the right and
left sides and both the front and rear sides are curved in the rotating axis direction.
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Theory of Operation Ver1.0 Sep.2006