II-3
2.1.2 Roller Holder ASSY Setting & Retracting Mechanism
This mechanism consists of the roller release lever, roller holder release rod, and roller holder
ASSY.
The roller holder ASSY supports the platen and the tape feed sub roller so that they can move
perpendicularly to the head ASSY and the tape feed roller, respectively, as well as rotating freely.
Loading a tape cassette and closing the cassette cover pushes down the roller release lever which
moves the roller holder release rod to the left (when viewed from the front of the machine). This
pivots the roller holder ASSY around the shaft provided on the chassis so as to press the roller
holder ASSY against the head ASSY side.
The platen is pressed perpendicularly against the head ASSY with the tape and ink ribbon (only
the tape when using non-laminated thermal film tape cassettes or stamp tape cassettes)
sandwiched inbetween under a uniform load by the platen (upper and lower) spring.
At the same time, the platen gear becomes engaged with the platen idle gear.
Also, the tape feed sub roller is pressed perpendicularly against the tape feed roller built in the
tape cassette with the tape (and base paper when using laminated tape cassettes or stamp tape
cassettes) sandwiched inbetween under a uniform load by the roller holder upper spring and roller
holder lower spring. At the same time, the sub roller gear becomes engaged with the tape idle
gear.
If you open the cassette cover, the roller release lever pops up, which shifts the roller holder
release rod so that the roller holder ASSY is retracted from the head ASSY, providing you with
enough space to replace the tape cassette.
Fig. 2.1-2 Roller Holder ASSY Setting & Retracting Mechanism
Head ASSY
Main frame ASSY
Roller holder release rod
Platen idle gear
Platen roller
Ink ribbon
Tape cassette
Laminate tape
Adhesive base tape
Tape feed roller
Tape feed sub roller
Roller holder ASSY
Shaft
Roller release lever
(Tape feed) platen gear
Platen lower spring
Platen roller
(Tape feed) sub roller gear
Platen upper spring
(Top)
Tape feed sub roller
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