Brother GTX pro Instruction Manual page 102

Minimum white ink volume
When printing with [Color+White Ink], the volume of background white color ink for dark or black color ink can be
controlled.
When printing with [Color+White Ink], you can increase the amount of the white ink volume used as the base in a dark
area by specifying a larger value.
Selecting [Special] allows you to select a value of [3] or higher.
<TIPS>

Larger the value, the more likely that blurring occurs.
White Ink Choke Width
This enables you to select the white ink choke width in such ten levels as [1] to [10]. When you increase this value, the
choke width increases. By decreasing the print range of white ink, the white ink will be prevented from extending off from
under the color inks.
<TIPS>

Check the original image if white lines and/or dots are seen around the image, this may be caused by "Anti-alias" bitmap.

There are instances in which fine lines (characters or photographs) will disappear if this level is increased. For this reason, it is
advisable to perform a test printing beforehand.
102
Creating print data