Bitmaps with transparent backgrounds do not print well

[marekmotyka]

Everything looks nice in the file. When I print it in Epson Edge, it prints just like in the photos. This is how you print in affinity 2.5 and 2.6

moto mikołaje.afdesign

[Old Bruce]

I am guessing that you have a series of RGB PNG files placed into a CMYK document and the black rectangle is a 'rich black'. I would try using an RGB document with the PNGs. Then let your Epson printer's drivers do the conversion.

You could also try exporting to a PDF and print that to see what happens.