QuickLabel QLS-4100 Xe - Manual (Page 202)

E-8 Windows printer driver setup
Brightness and Contrast - Use these controls to adjust the brightness and
contrast of the image. As you adjust the brightness and contrast, the sample
graphic will be updated. Actual output is dependent upon many factors,
including media type, ribbon type, printer heat settings and speed, etc.
• Brightness - Use the Brightness slider to adjust the brightness of the
entire label. A setting of 100% is the default brightness.
• Contrast - Use the Contrast slider to adjust the intensity of colors around
the Contrast Threshold.
Colors above the threshold are adjusted the percent specified above the
threshold. Colors below the threshold are adjusted the percent specified
below the threshold. The nominal settings for contrast is 100%.
The nominal setting for the threshold is 50% of the entire range of the color
components. That is, a color intensity is defined as a number between 0-255.
A threshold of 50% corresponds to 128 or mid-range intensity.