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Chapter 4
Dual Ribbon Spool System
As the ribbon pulls the dancer arm forward, a spring-loaded brake release arm is
engaged, causing the ”V” belt to be pushed up and away from the pulley, releasing the
brake. This brake release action is transferred to the upper spool via a lever arm. The
end of the lower belt is connected to one end of the lever arm and one end of the upper
belt is connected to the other end of the lever arm. As the lower belt pushes on the lever
arm, motion is transferred to the upper belt causing the belt to move down and away from
the upper pulley releasing the brake.
Dancer Arm
Ribbon Brake
Ribbon Tension
Spring
Second Ribbon
Tension
Actuator
Lever Arm
Ribbon Drop
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