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50 P640i Card Printer User Guide 980541-001 Rev. A
Technical Note 5 - Flip Station
The flip station performs two independent functions:
1. It lifts the card in process clear of the carriage, flips
it upside down, then returns it to the carriage so that
its other side may be printed; 2. It lifts the fully
printed card clear of the carriage, raising it to the point
where it lines up with the laminator’s infeed path. An
ejector arm then propels the card into the laminator
infeed rollers.
Note that the flip action alternates in consecutive
cycles between clockwise and counterclockwise.
How the flip station works
As the motor driven carrier rises, taking with it the flip
arms and card, the cam is forced to rotate by the
projection on the right side of the flip stop. The
actuators do nothing at this time.
The cam
is driven
over
center by
the flip
stop, at
which
point the
flip
spring
takes
over,
fully
inverting
the card.
Shown
here at
its upper limit of travel, the carrier is about to descend.
As the carrier descends, the cam deflects Actuator A,
which in turn drives the flip stop to the right. Now,
when the next flip is called for, the cam strikes the left
projection of the flip stop, flipping the card in the
opposite direction. Actuator B, moving in parallel
with A, is then set to return the flip stop to the left
when the carrier heads downward on completion of
the flip action.
One end of the flip spring locates in a cavity in the
rear flipper arm, the other in a hole in the rear
surface of the carrier molding.
Spring
Collar
Carrier
Cam
Azimuth
adjust
Spring
locating
hole
Rack
Slide
bearing
Front Rear