Tape & Ribbon Feed Mechanism - Brother PT-D600 Service Manual

2.1.4 Tape & Ribbon Feed Mechanism
This mechanism consists of a stepping motor, gear train, and roller holder ASSY.
 Tape Feeding
As the stepping motor rotates, the rotation is transmitted via the gear train to the
platen idle gear (which rotates the platen roller gear) and tape idle gear (which rotate
the tape feed roller and its sub roller at the same rotation speed).
Accordingly, the sandwiched tape and ink ribbon will be advanced at the constant
speed. (When a laminate tape cassette is mounted, the sandwiched laminate tape,
ink ribbon and adhesive base tape will be advanced together.)
 Adhesive Base Tape Feeding (only for laminate tape cassettes)
A laminate tape cassette contains both a transparent laminate tape roll and a
separate adhesive base tape roll.
When a transparent laminate tape and adhesive base tape pass through the contact
point (between the tape feed roller and tape feed sub roller), they are then bonded
together into a single, printed tape. The ink printed on the laminate tape is, therefore,
sealed up with the adhesive base tape.
Platen idle gear
Tape feed roller built
in a tape cassette
(Tape idle gear)
Tape feed sub roller
Tape idle gear
Platen idle gear
Adhesive base tape
Platen roller
Figure 2.1-6 Tape Feeding Mechanism
Thermal head ASSY
Roller holder ASSY
Frame ASSY
II - 6
Transparent
laminate tape
Stepping motor