Seiko LTP F Series, Reference Manual

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3-4
3.2.2 Heat Element Dimensions for the LTPF347
The LTPF347 contains a thermal head with 640 heat elements (dot-size). The 576 dots (72 mm to
the paper width 80 mm) is a printable area due to a relation with the paper width.
When transmitting print data, enter (NUL) data for the data string equivalent to 32 dots each in right
and left sides.
576 Dots (72mm)
0.125mm
32 Dots 32 Dots
640 Dots (80mm)
Printable area
Figure 3-3 Heat Element Dimensions (LTPF347)
Figure 3-4 Print Area (LTPF347)
mm (Paper width)
80
74 mm (Printing width)
3 mm
0.125 mm
(Paper feed
pitch)
3 mm
+0
-1