hello, you might want to try the following:
On the copy tab, select black & white.
On the image quality tab, select original type – text and printed original
On the image options tab, select lighten all the way to the top, image enhancement – auto suppression and auto contrast
I have a Workcentre 7556. One of my user has a document with some text that was highlighted in yellow with a highlighter. When the user makes a black and white copy, the yellow highlighter comes out gray. Is there a way to make a copy of the document without the yellow highlighter showing just the text? On my old Xerox 5665 this was not an issue. The yellow highlight never showed up.