II - 3
2.1.2 Roller Holder ASSY Setting & Retracting Mechanism
This mechanism consists of the roller holder release lever, roller holder release rod
24B, roller holder ASSY and side sensor PCB ASSY.
The roller holder supports the platen and tape feed sub roller so that they can move
perpendicularly to the thermal head ASSY and tape feed roller built in the tape
cassette, respectively, as well as rotating freely.
Loading a tape cassette and closing the cassette cover pushes down the roller holder
release lever which moves the roller holder release rod 24B to the left as illustrated
below. This pivots the roller holder ASSY around the shaft provided on the side
sensor frame 24B so as to press the roller holder ASSY against the thermal head
ASSY side.
The platen is pressed perpendicularly against the thermal head ASSY with the tape
and ink ribbon (only the tape when using non-laminated thermal film tape cassettes)
sandwiched in between under a uniform load by the roller holder springs. At the same
time, the platen gear becomes engaged with the P idle gear and the side sensor
touch to the top of cassette to detect the width of the tape cassette.
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) sandwiched in between under a uniform load by the roller holder springs.
At the same time, the sub roller gear becomes engaged with the tape drive gear
TZA24.
If you open the cassette cover, the roller holder release lever pops up so that the roller
holder release rod 24B retracts the roller holder ASSY from the thermal head ASSY
and side sensor also retracts from the tape cassette, providing you with enough
space to replace the tape cassette.
Figure 2.1-2 Roller Holder ASSY Setting & Retracting Mechanism
Tape cassette
Adhesive base tape
Laminate tape
Ink ribbon
Thermal head ASSY
Roller holder release lever
P idle gear
Tape feed roller built
in a tape cassette
(Tape idle gear)
Tape feed sub roller
Platen roller
Roller holder ASSY
Roller holder release rod 24B
Roller holder spring, lower
Roller holder spring, upper
Platen roller
Tape feed sub roller
Sub roller gear
Platen gear
Side sensor PCB ASSY
Summary of Contents for P-touch PT-D600
Page 1: ...SERVICE MANUAL MODEL PT D600 ...
Page 171: ...Oct 2014 SM PT079 1 ...