II-3
2.1.2
Roller Holder ASSY Setting & Retracting Mechanism
This mechanism consists of the release gear train, roller release rod, and roller holder/head ASSY.
The roller holder ASSY incorporates the platen holder and the sub roller holder.
These holders support the platen and the tape feed sub roller so that they can move perpendicularly
to the thermal head and the tape feed roller respectively to apply the platen with a certain pressure
against the thermal head to ensure the tape feeding even if the tape thickness changes.
As the release motor rotates, the rotation is transmitted to the release gear and the motion of the
cam of it moves the roller release rod to the direction marked by the arrow. This rotates the roller
holder ASSY around the rod fixed to the thermal head ASSY so that the roller holder ASSY is
pressed against the thermal head. The release motor stops when the CPU receives the signal from
the roller holder sensor generated by the pressure from the roller release rod.
The platen presses the tape and the ink ribbon (or only the tape when mounting the heat sensitive
tape cassette or the AV labels) against the thermal head under a uniform load by the platen spring.
On the other side in this state, the platen gear engages with the platen idle gear.
Also, the tape feed sub roller presses the adhesive base tape and the tape (or only the tape when
mounting the non-laminated tape cassette) against the tape feed roller built in the tape under the
uniform load applied by the sub roller spring. In this state, the tape feed sub roller engages with the
tape feed gear.
As the release motor rotates, the drive power is transmitted via the release gear to the roller release
rod, which moves to the counter direction marked by the arrow. This motion releases the roller
holder from the thermal head and provides the appropriate gap between the platen and the thermal
head to allow the replacement of tape cassette.
The release motor rotates and stops according to the potion of the roller release rod, which is
detected with the roller holder sensor.
The roller holder ASSY is set when printing.
Note that the roller holder is released automatically under the following states.
- The AC power is supplied with the machine.
- The cassette cover is opened.
- The power supply to the machine is cut by pressing the power supply button.
- The machine is let stand for a certain time (10 minutes) after printing.
Summary of Contents for PT-9500PC - P-Touch 9500pc B/W Thermal Transfer Printer
Page 1: ...SERVICE MANUAL MODEL PT 9500PC ...
Page 2: ...SERVICE MANUAL MODEL PT 9500PC ...
Page 86: ...IV 10 3 The LED does not turn on 4 No printing is performed ...
Page 87: ...IV 11 5 The interface malfunction 6 The tape is not cut ...
Page 88: ...IV 12 7 The tape is not fed correctly ...
Page 89: ...IV 13 ...
Page 90: ...IV 14 8 Half cut failure ...
Page 91: ...IV 15 9 Forced tape eject failure ...
Page 92: ...IV 16 10 The failure of pressure contact release of the roller holder ...
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