Revit Architecture lets you control the line weight and pattern used for underlays, and the brightness of halftone elements. When printing views or sheets, you can specify that halftones print as thin lines to retain print fidelity.
To define Halftone/Underlay settings
Settings panel
Additional
Settings drop-down
(Halftone/Underlay).
to modify an
existing pattern or create a new one. See
Line Patterns.
This setting blends the line color of an element with the background color of the view to the specified amount.
To specify that halftones print as thin lines, use Print Setup options. See Print Setup.