Music Box Composer

After making a PDF file in Music Box Composer and printing the file, the lines and dots are printed in light grey color, so hardly visible.

i am using Bolt PDF as programme.

how can i print the PDF file with black lines and dots?

thanks in advance for answers

kind regards
Alfons

there is software called Noteur and Midiboek to write and print midi for crankorgans.
you can define your own output with punchholes for also roller-organs and barrelorgans.

with Google you can find the website to download the software (which is free to use)