Automatic Tape Cutter Mechanism - Brother PT-2500PC Service Manual

2.1.5

Automatic Tape Cutter Mechanism

The tape cutter unit consists of a stationary blade and a movable blade driven by the
cutter motor.
Upon completion of printing and tape feeding, the CPU activates the cutter motor (DC
motor) whose clockwise rotation is transmitted via the idle gears to the cutter moving
gear.
As the cutter moving gear rotates counterclockwise, its boss "X" (which is fitted in the
opening of the movable blade) actuates the movable blade to pivot it around shaft "Y."
Consequently, the cutter cuts the printed tape routing through the movable and
stationary blades, just like a scissors.
After that, the CPU keeps the cutter motor on. When the movable blade comes back to
the home position, its end "Z" activates the cutter sensor actuator which presses the
cutter sensor switch. The moment the CPU receives the sensor signal, it stops the cutter
motor.
Fig. 2.1-6 Automatic Tape Cutter Mechanism
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