Wincor Nixdorf TH230, Руководство программиста

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Programmers Guide TH230/TH230+
8
Programming Hints
In this chapter programmers may find some hints and tricks to make the thermal printout
faster, look better or increase the lifetime of the thermal print head.
Vertical Dot Lines
To increase the lifetime of the thermal print head the programmer has to avoid
printing of long vertical dot lines like in the ticket on the left side. In this ticket the
two vertical dot lines are printed always with the same two print dots of the thermal
print line. This leads to a big mechanical wear and thermal wear for this two dots. To
avoid early failure of the dots, vertical lines can be printed as dotted lines instead of
solid lines. Another possibility is to move the printout from ticket to ticket
horizontally by one dot. This can be done for example 10 times. After this the
printout starts from the beginning. Thus the lifetime is much higher compared to
print always on the same position.
Horizontal Dot Lines
To increase the performance of the printer the programmer has to avoid printing of long
horizontal dot lines like in the ticket on the left side. If the printer has
to print such lines the current to heat the print line is very high. For
this reason the printer moves the paper slower and the performance
was decreased. To avoid bad performance, horizontal lines can be
printed as dotted lines instead of solid lines.
Reverse Feed after Cutting
To avoid paper bending the programmer should not use cuts with backward feeding of the
paper (command GS V(m=67).
Small Graphics Printing
If the printed graphics does not reach until the right border of the print area, the
programmer should transmit only this part of the graphics in which printed dots are
available. It is not necessary to transmit the null byte on the right side of the graphics and
this leads to a bad print performance.
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