II-6
Adhesive Base Tape Feeding (only for laminated tape cassettes)
A laminated tape cassette contains both a transparent laminated tape roll and a separate
adhesive base tape roll.
When a transparent laminated tape and an adhesive base tape pass through the contact point
(between the tape feed roller and the tape feed sub roller), they are then bonded together into a
single printed tape. The ink printed on the transparent laminated tape is, therefore, sealed up
with the adhesive base tape.
Ink Ribbon Feeding (The heat sensitive tape cassette is not applied.)
As the tape feed roller rotates, the ribbon drive cam located at the middle of the gear train
rotates counterclockwise. When fitted on the ribbon drive cam, the ribbon take-up roll in the
tape cassette also rotates to take up the ink ribbon.
To apply proper tension to the ink ribbon between the platen roller and the ribbon drive cam, the
feed speed of the ribbon drive cam is slightly greater than that of the tape feed roller.
The differential between the feed speed at the platen roller and the ribbon drive cam gives a
certain tension to the ink ribbon by the clutch spring that allows the cam to slip.
This mechanism allows the ink ribbon to keep proper tension, which enables the ribbon take-up
roll to clearly separate from the tape at the sterilized angle after printing.
Fig. 2.1-4 Ribbon Feed Mechanism
Tape feed roller
Tape feed sub roller
Platen roller
Roller holder ASSY
Thermal head ASSY
Ink ribbon
Ribbon take-up roll
Main frame
Ribbon drive cam
Tape feed motor
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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