When you have an original on which colors are used to accentuate or highlight information on a black and white drawing, it can be difficult to make a good black and white copy. The plotWAVE T75 has a special setting [Color highlighting], that highlights the color accents of the original by making them darker than the other information.
The [Color highlighting] setting is only relevant for the copy modes: [Colored original], [Lines/text], [Lines/text draft], [Folded lines/text], [Dark original].
Control the level of accents with the [Lighter/Darker] setting. You can, for example, decrease the [Lighter/Darker] value to reduce the difference between 'foreground' and 'background' information. For more information, see Preset category: Image.