Wanted a Card printer tray for my Epson XP-970, but could not find one so this is an adapter you can put in its existing CD/DVD printer tray.
I eventually purchased a second printer tray for £7 from AliExpress to glue my tray in permanently so as to make it easier to calibrate.
I also discovered that if I left the part black, the Epson printer rejects the tray, as it scans for a printable disk before allowing printing, so covered the CD with masking tape and it worked a charm
I made a template in Serif Pageplus Desktop publisher, calibrated it and now its perfect