Enlarged Bars, Black Bar at the Top

Enlarged Bars, Black Bar at the Top

If this occurs during printing, this effect is caused by the printer driver (especially with thermal label printers). If this occurs during bitmap generation, this effect is caused by the screen driver.

The solution is to change the drawing-mode of the barcode library. Edit the TFORMer.xml configuration file and change the following entry:

<WINGDI>
<!-- Settings for TBARCODE lib -->
<!-- drawing-mode Specifies method for drawing bars on GDI printers -->
<!-- 0 = Default -->
<!-- 1 = Compatible -->
<!-- 2 = Advanced -->
<TBARCODE drawing-mode="2" />
</WINGDI>

Then restart TFORMer (or your TFORMer SDK application).

Steps to Optimize Barcode Quality

• Adjust the module width bar code property to the boundaries of the printer dots of your printer (given by DPI, e.g. 2 dots at 203 dpi = 0.250 mm)
• Improve quality by enabling the OptResolution barcode property (if OptResolution is enabled, add 0.001 mm to the module width).
• Try different settings of drawing-mode in TFORMer.xml (restart TFORMer to update the change internally).