II-7
2.1.6 Interlock Mechanism of the Roller Holder
(1) When the cassette case ASSY is opened, then the holder cam attached at back side of
cassette cover is released from surface A. Following to that, the roller holder ASSY is
retracted from the thermal head side with tension of the roller release spring.
(2) When the cassette cover ASSY is closed, then the holder cam located at backside pushes
the thermal head at roller holder ASSY by pressing A surface of the roller holder ASSY.
Fig. 2.1-8 Holder Cam (Cassette Cover ASSY) and Roller Holder ASSY
Fig. 2.1-9 Interlock Mechanism of the Roller Holder
Thermal head
Platen roller
Tape cassette
Holder cam (Cassette
cover ASSY)
A
Roller holder
release spring
A
(Tape feed)
sub roller
Shaft
Roller holder ASSY
Holder cam (Cassette
cover ASSY)
Platen idle gear
Platen roller
Thermal head
Frame ASSY
Roller holder ASSY
Tape cassette
(Roller Holder ASSY retracted) (Roller Holder ASSY engaged)
Cassette cover ASSY
Holder cam
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