Brother PT-530 Service Manual page 18

For laminated tape cassettes, instant lettering tape cassettes, and iron-on transfer tape cassettes,
the CPU processes the print data to generate a mirror image so that the printed character can be
seen normally when viewed from the other side of the printed face of the tape.
n Character Formation
While the main motor (stepping motor) feeds the tape and ink ribbon (tape only when using non-
laminated thermal film tape cassettes or stamp tape cassettes) by 0.141 mm for 13.8 ms, the
thermal head generates heat once. The feed amount of 0.141 mm is smaller than the width (0.195
mm) of the heating elements so that the heat generated at one heating cycle will overlap with the
next heating cycle. This forms a character having no gap between adjacent printed dots.
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