PRINTING FAINT TEXT AND LINES IN BLACK (Text To Black/Vector To Black)
(This function is only available in Windows.)
When printing a color image in grayscale, color text and lines that are faint can be printed in black. (Raster data such as bitmap images cannot be adjusted.) This allows you to bring out color text and lines that are faint and difficult to see when printed in grayscale.
•[Text To Black] can be selected to print all text other than white text in black.
•[Vector To Black] can be selected to print all vector graphics other than white lines and areas in black.
Windows
(1)
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(1)Click the [Color] tab.
(2)Select the [Text To Black] checkbox 
and/or the [Vector To Black] checkbox 
.
(2)