Knowledge Base

The images print corrupted or TrueType fonts print blurred

Problem

Sometimes you can see your labels printed corrupted:

  • The images can print without sharp edges, the filled areas are not consistent with black color.
  • Blurring or small dots can occur around the edges of truetype fonts.

Solution

Solution (for images)

Thermal printers can print images in black and white (B&W) mode. If you use color or grayscale images on your label, NiceLabel will convert them in B&W before they can be printed. The process is called dithering. During the dithering process all colors and shades of grey in the picture are converted to black and white dots, creating the illusion of new colors and shades by varying the pattern of dots.

The default dithering mode might not be the correct one for your images. You can select among different dithering modes or disable it completely. To change the dithering mode, do the following:

  1. Open your label.
  2. Select Printer Settings from the File menu.
    The window with the printer settings will open.
  3. Go to the Dithering tab.
  4. Change the Dithering type option to suit your needs. Look at the preview on the right side how you can expect the selected type to be applied on the label.
    Disabling the dithering usually yields the best results.

Another option you have is to originally use B&W images, not color or grayscale images. The color format of the images can be easily changed with graphic software like Microsoft Paint and similar.

Solution (for TrueType fonts)

When you design a label with text objects formatted in the TrueType fonts, NiceLabel converts such objects as images. TrueType fonts are not available internally in the printer, so they are printed as images. The conversion process to images relies also on the Windows graphic settings.

Recent Windows operating systems include support for smoothing of screen font edges. In some cases enabling this option can have impact on the quality of label printing. If you observe unsharp edges of printed truetype fonts or dots printed next to the font outline, the font-smoothing feature might affect you.

To disable the font smoothing, do the following:

  1. Open Display from Control Panel.
  2. Go to Appearance tab.
  3. Click on the Effects button.
  4. Disable the option Use the following method to smooth edges of screen fonts.

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