Brother PT-530 Service Manual page 23

Tape rewinding process: After completion of the 1st printing sequence, you open the cassette
cover, which retracts the roller holder ASSY from the thermal head providing you with enough
space to access the ribbon (as described in Subsection 2.1.2). Then you take out the 1st color
ribbon. To rewind the tape, you press the New Block switch.
The main motor rotates in the reverse direction (clockwise in Figure 2.1-6) and its rotation is
transmitted via the gear train. The tape rewind rocking arm rotates counterclockwise so that its
rocking gear engages with the tape rewind cam. Fitted over the cam which rotates
counterclockwise, the tape rewind spool (in the refill-type non-laminated tape cassette, YS-18) also
rotates to rewind the tape into the cassette.
If the leading edge of the rewound tape passes through the tape leading-edge sensor, the CPU
further rotates the motor to rewind the tape by the specified number of pulses from that detection
moment. This way, the tape rewinding process is completed.
To print with the 2nd color, you load the 2nd color ribbon and close the cassette cover. The same
printing process as for the 1st color takes place for the 2nd color printing. After completion of
printing, you open the cassette cover, take out the 2nd color ribbon, and rewind the tape. The
same tape rewinding operation as described above takes place. To print with the 3rd color, the
same processes as above are repeated.
Figure 2.1-6 Tape Rewinding Process in Color Printing
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