Detail level is just like anything at that scale, if you have got a load of words, it won't come out right, see test caps we did for ESL below - you can't see the writing "Electronic sports league" very clearly. We have this process nailed down now so the resolution is better than in the photo.
Unlike dye sub, we can print light colours onto dark substrates, however we recommend using this process only for novelty keys, as admittedly it won't be as durable but we can get some really nice results at some good price breaks