Knowledge Base

The images print corrupted or TrueType fonts print blurred

Problem

Sometimes you can see your labels printed corrupted where the images can print without sharp edges or the filled areas are not consistent with black color.

Solution

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.

Solution for NiceLabel 2017

In NiceLabel 2017, you can change the dithering mode per label or individually per each Picture object on the label. You need NiceLabel 2017.1 or higher.

To change dithering mode per Picture object (NiceLabel Designer will do the dithering), do the following:

  1. Select the Picture object in your label.
  2. Open the object properties.
  3. In Style tab, select the dithering type.
    When you select "Printer driver default" the printer driver will do the dithering for this object. Read the next paragraph for details.
    When you select any other dithering option in the list, NiceLabel designer will apply that dithering type.

To change dithering mode for the entire label (NiceLabel printer driver will do the dithering), do the following:

  1. Open your label.
  2. Make sure you use NiceLabel printer driver for this label.
  3. Click the Printer properties button next to the selected printer name in the bottom part of the designer.
    The window with printer settings will open.
  4. Go to the Dithering tab.
  5. Change the Dithering type option to suit your needs. Look at the preview how you can expect the selected type to be applied on the label.
    Disabling the dithering usually yields the best results.

Solution for NiceLabel 6

To change the dithering mode, do the following:

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

Another hint

You have another option to use black & white images as source files, not color or grayscale images. The color format of the images can be easily changed with graphic software like Microsoft Paint and similar.

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