Brother TD-4000, Service Manual

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II - 4
2.1.4 Automatic Tape Full Cutter Mechanism
The automatic tape full cutter mechanism moves the moving cutter blade up and
down to the direction of the fixed cutter blade to cut the tape on the feeding pass. The
cam is rotated once so that the moving cutter blade moves up and down and cuts a
medium. The cutter motor rotates from the position where the cutter home position
sensor is ON, and the gear of the cam is rotated through the cutter worm gear. When
the cam is rotated once, the cutter motor stops and stays again at the position where
the cutter home position sensor is ON.
This mechanism provides the mechanism to reverse the driving system, which is
used in case that the tape or the like is jammed between the blades. (For the details,
refer to "CHAPTER IV TROUBLESHOOTING & ERROR MESSEAGE".)
When the driving system is reversed, the cutter motor stops and stays again at the
position where the cutter home position sensor is ON.
Figure 2.1-4 Automatic Tape Full Cutter Mechanism
Fixed cutter blade
Moving cutter blade
Cutter motor
Cut worm gear
Cutter home position sensor
Cut helical gear
Thermal tape
< A view >
A view
Fixed cutter blade
Cut worm gear Cut helical gear
Cutter motor
Cutter home position sensor
Moving cutter blade