An enquiry about printing processes for art cards please

[William Overington]

For about a year I have been producing what are advertised as photo greetings cards from the Papier website, having produced artwork using Affinity Designer. The greetings cards are intended as everyday greetings cards, so me framing them for my personal private art collection is applying them for a purpose far beyond the purpose for which they are sold. Nevertheless I enjoy having framed printings of my art and the results are far better than I could produce at home, look good, and much of my art is more about concept than beimg a picture.

Reently, because I saw it advertised on a website, I bought a greetings card version of a painting or print by an artist, a picture produced in the 1930s.

When it arrived I was amazed at how bright are the colours in the card compared with the printings that I have been producing.

I am wondering by what printing process are such art cards produced please such that the colours are so bright. 

I realize that this is not a question direct;y about an Affinity Product as such, though hopefully relevant here as it could be relevant to how output from Affinity products is produced so as to be used to produce high-quality prints of artwork, maybe it involves spot colours or something.

Does anyone here produce such art prints please?

William