Problem Description

In a dgn file, reference raster images were attached, it  is sent to print in Monochrome using the pdf driver, the result of the print appeared brownish, sepia like effect.

Is there a setting to overcome this effect?

Steps to Resolve

1. Go to File > Print and edit the Printer Driver Configuration file (e.g pdf.pltcfg)
2. In the Advanced table, set "Optimize Raster Color Depth" to "True"
3. Save this .pltcfg file.
4. And Reload Driver Configuration.