Brother QL 570 - P-Touch B/W Direct Thermal Printer, 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 ASSY
rotates from the position where the cutter home position detect sensor is ON, and the gear of the
cam is rotated through the cut worm gear. When the cam is rotated once, the cutter motor stops
and stays again at the position where the cutter home position detect 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 detect sensor is ON.
Fig. 2.1-4 Automatic Tape Full Cutter Mechanism
Thermal tape
Cut helical gear
Cut worm gear
Cutter motor ASSY
Fixed cutter blade
Moving cutter blade
A view
< A view >
Fixed cutter blade
Moving cutter
blade
Cutter motor ASSY
Cutter home
position detect
sensor
Cut helical
gear
Cut worm gear