Question:

I use some custom color (in RGB mode) in the drawing, I want to print them in monochrome.

But when I select the printing style as monochrome in the plot configuration windows, it still comes out in a colorful result. why?


Solution:


There is a solution for RGB color to print in monochrome,


Do you know about the Named Plot Style mode?
Normally, the default plot mode is the Color Dependent mode, in this mode, the printing style is based on the index color you used, and it only applies to the standard index colors.
So it got 255 styles (since CAD only got 255 index colors), all those information are stored in the ctb file,  

And Named Plot Style mode, it's a mode that based on the style name (you can name it whatever you like),
You can assign a specific name style for a layer, no matter what color you are using, index colors, RGB colors, or HSL colors, it will all print to the color you set in the style.

To use named plot style mode, you need to first convert a CTB file to STB file, 
1. using CONVERTCTB command, choose a CTB file
For example, in this case, select the monochrome.ctb, then it will generate a stb file.
2. Then, run CONVERTPSTYLES, it will change the plot mode to named plot style mode.


3. Last steps, assign a specific name plot style for each layer in the layer manager.
Of course, you can configure the style in the plot style editor.