To All, please keep politics out of the posts and just for this case concentrate on a coloured map image.
Apparently (from deleted post) the problem is ...only issued our office with a 1989 dot matrix printer.
There are good reasons for using dot-matrix printers, fanfold-multi sheet carbon copy stationary for example. I once sold my 24 pin Panasonic for a really good price. Obviously the print is either black or white
What might work is dithering the image. I would normally use Imagemagick for this but it wrecks the text., Using Gimp, try the Newsprint filter - black on white and circles.
A bit of work before and after.
Work with layers. (1)
Desaturate the coloured image. (2)
Copy the layer, apply the Newsprint filter and put the layer mode to lighten only (to try and recover the text) (3)
Still not black and white, so maybe a final Apply Threshold.
Not very pretty but a possibility.
Apparently (from deleted post) the problem is ...only issued our office with a 1989 dot matrix printer.
There are good reasons for using dot-matrix printers, fanfold-multi sheet carbon copy stationary for example. I once sold my 24 pin Panasonic for a really good price. Obviously the print is either black or white
What might work is dithering the image. I would normally use Imagemagick for this but it wrecks the text., Using Gimp, try the Newsprint filter - black on white and circles.
A bit of work before and after.
Work with layers. (1)
Desaturate the coloured image. (2)
Copy the layer, apply the Newsprint filter and put the layer mode to lighten only (to try and recover the text) (3)
Still not black and white, so maybe a final Apply Threshold.
Not very pretty but a possibility.